ONLY Mechanical and
Truck/Automotive Engineers on the net with 27 years experience
specializing in engine, powertrain/chassis engineering, performance
and synthetic motor oil lubrication and filtration.
Automotive Gear Lubricants- AHEAD
OF THE CURVE
AMSOIL Introduces Its New Line of Synthetic Gear Lubes
to you by highly experienced Truck and Automotive Engineers and
Lubrication Specialists. We have 27 years experience engineering
and testing cars, trucks, engines, chassis components and
systems, powertains and lubricants
and we will put our extensive knowledge to use for you.
are also longstanding Professional Grade members of the
Society of Automotive Engineers (SAE). This prestigious
position is ONLY granted to degreed engineers with
documented work experience in the automotive engineering
have packed this website with useful information that will
help you to make an informed decision regarding your choice of
lubrication and filtration products for your vehicles and
Your One-Stop AMSOIL source. Outstanding
product and tech support and the absolute lowest
Wholesale Pricing is available right here! Nobody beats our
The automotive industry is not static. With technology
constantly improving, vehicle and engine designs change.
Today's vehicle line-up is vastly different than it was 10
years ago, with SUVs and trucks representing the fastest
growing segment of the U.S. automotive market. In addition,
the industry is moving away from front wheel drive vehicles,
and rear wheel drive vehicles are making a strong comeback.
The rapidly changing and diversifying vehicle market
requires new and improved gear lubricants.
What has changed?
Modern vehicles are designed with more horsepower and torque
than in years past, allowing them to haul and tow heavier
and heavier loads. This results in higher gear loading and
hotter running differentials. In addition, factors such as
increased interior space and lower floor boards push axles
higher into the vehicle's body, reducing air flow and
increasing heat. The closer proximity of the axles to the
exhaust system also effectively raises heat, while more
aerodynamic body styles and air dams result in restricted
airflow to the differentials.
A number of factors causes SUV, pickup truck and van gears
to operate under more severe conditions than over-the-road
trucks, contributing to increased temperatures, higher gear
loading and shorter drain intervals. First, these vehicles
have smaller gear that must handle higher loads per square
inch of surface area. Second, their smaller sump sizes (and
lower volume of gear lube) cannot dissipate heat as well as
larger sump sizes. Third, air flow is significantly reduced
compared to over-the-road trucks. Fourth, these vehicles are
subject to more frequent stop and go driving conditions and
are more susceptible to moisture from condensation due to
varying temperature fluctuations.
The AMSOIL Solution
In order to optimize its gear lubes for modern applications,
AMSOIL has updated its gear lube formulations.
SEVERE GEAR Synthetic Extreme Pressure Gear Lubes
(75W-90 & 75W-140)
Specially formulated for severe duty applications, AMSOIL SEVERE GEARynthetic Extreme Pressure Gear Lubes are
excellent for vehicles that experience towing, hauling,
steep hill driving, commercial use, racing, off-road use,
rapid acceleration, stop and go driving and high ambient
temperatures. AMSOIL SEVERE GEARGear Lubes are formulated
with increased levels of premium quality additives, allowing
improved limited-slip and locking differential performance.
And with high viscosity indices, SEVERE GEAR Gear Lubes
provide an extra level of protection at high temperatures.
Extra additives provide additional insurance against wear in
case of a lubricant film breach. These additives provide an
iron sulfide barrier coating that effectively prevents
micro-welding that leads to heat and friction. This allows
AMSOIL SEVERE GEARGear Lubes to prevent thermal runaway, a
phenomenon caused by a lubricant's inability to control
friction and increased heat under high-stress conditions!
By preventing thermal runaway, AMSOIL SEVERE GEARGear
Lubes inhibit component damage and rapid lubricant
SEVERE GEAR Synthetic 75W-90 Gear Lube (SVG) replaces
Series 2000 Synthetic 75W-90 Gear Lube (TGR).
SEVERE GEAR Synthetic 75W-140 Gear Lube (SVO) replaces
Series 2000 Synthetic 75W-140 Gear Lube (TGO).
Long Life Synthetic Gear Lubes (75W-90 and 80W-140)
AMSOIL Long Life Synthetic Gear Lubes are formulated with
new and enhanced additives designed specifically for
extended drain intervals of up to 500,000 miles in
Long Life Synthetic Gear Lubes are engineered to protect
gears better than conventional gear oils, resisting acid,
carbon and varnish formation and oxidative breakdown. Their
superior shear stability allow them to maintain their
viscosity during extended service. The enhanced 80W-140
formulation replaces the former 85W-140 formulation,
allowing a greater operating range and improved cold
AMSOIL Long Life Synthetic Gear Lubes are available in five
gallon buckets, excellent for use with lube dispensing
Long Life Synthetic 75W-90 Gear Lube (FGR) replaces
Synthetic 75W-90 Gear Lube (AGR).
Long Life Synthetic 80W-140 Gear Lube (FGO) replaces
Synthetic 85W-140 Gear Lube (AGO).
80W-90 Synthetic Gear Lube
The 80W-90 gear lube market is mineral oil based. New
reformulated AMSOIL 80W-90 Synthetic Gear Lube is designed
as a high quality synthetic replacement for mineral gear
oils. It is a multifunctional product designed to surpass
the requirements of equipment and automotive applications
calling for an SAE 80W-90 viscosity grade. Its naturally
high viscosity index and shear stable construction provide
improved cold temperature performance, while extreme
pressure additives provide excellent protection for gears
and bearings. AMSOIL 80W-90 Synthetic Gear Lube is
competitively priced, making it an excellent choice for
The most common SAE viscosity grade gear lube
used in production cars and light trucks is 80W-90.
75W-90 is also a very common viscosity grade gear lube.
If your vehicle specifies 80W-90, as many production vehicles
do, you can certainly use a 75W-90. There is very little
difference between the two. According to SAE J306
specification the maximum temperature for a viscosity of
150,000 centipoise for a 75W is minus 40 deg. C. while the
value for an 80W is minus 26 deg. C.
This simply means that the 75W is going to flow
slightly better under colder temperatures than the 80W will,
but nothing that you will ever be able to detect without very
specialized test equipment.
Both viscosity gear lubes will protect equally well and
are both 90 weight gear lubes at normal operating
Many light, medium and
heavy-duty trucks will specify an 85W-140. In this case you
can use an 85W-140 or a 75W-140. The differences are in cold
weather flow properties.
The 75W-140 is going to flow slightly better than the
85W-140 in cold weather until the gear lube warms up in which
case they will both perform as a 140 weight gear lube. Many
synthetic gear lubes will show SAE grades of 75W because of
their excellent low temperature characteristics.
Synthetic Gear Lubes
There are several
manufacturers are using a synthetic 75W-140 gear lube in some
light trucks and performance vehicles while a few also use a
synthetic 75W-90 in some high performance cars.
One of the first production applications of a 75W-140
synthetic gear lube I can remember in a production light truck
was in a very performance model that was having heat related
problems in the rear axle that was causing the plastic housing
of the 3-channel anti-lock system (ABS) sensor located in the
differential housing to overheat and distort.
In a typical ABS system
there is a toothed sensor at each wheel that measures wheel
speeds and compares them using sophisticated computer
technology and can determine which wheel or wheels is locked
up and then send a signal to the ABS unit to modulate brake
pressure. This is called a 4-channel system. A 3-channel ABS system is a less costly type of system and
only has one sensor at the rear differential and one at each
front wheel, thus the name 3-channel ABS system. The only way
to solve the problem was to use a synthetic 75W-140 gear lube
in the axle. The synthetic gear lube lowered the temperatures
significantly and eliminated the problem, as well as provided
for increased performance and durability of the gear set and
axle bearings. You
will see that several manufacturers are now using and
specifying synthetic gear lube for axles, especially in the
rear axles of trucks. The synthetic gear lube is used for a
reason. A manufacturer is generally not going to use a higher
performance and more costly gear lube unless it is necessary
to solve a specific problem or improve performance or
durability issues. The
synthetic gear lubes that are used as a factory fill are
superior to petroleum gear lubes.
When it comes time to
change the factory fill synthetic gear lube I recommend
purchasing one of the premium quality synthetic gear lubes
manufactured by AMSOIL INC.
The performance is superior and the cost is
significantly less that you will pay by purchasing it from the
dealership and the specifications state that in non-commercial
applications their gear lubes do not require changing (unless
severely contaminated by dirt of water). For commercial
applications the change interval specification is five times
that of a petroleum gear lube. They offer the regular
synthetic and the Severe Gear synthetic which is a higher
performance formulation. I know of many professional racing
teams that use the Severe Gear Synthetic Gear Lubes.
If your vehicle originally
came with a petroleum gear lube I recommend upgrading to a
premium quality synthetic gear lube.
Synthetic gear lubes operate at different temperature
ranges in relation to viscosity than petroleum gear lubes do.
This allows for one gear lube to cover a wide range of
operational, temperature and load conditions from extreme cold
to extreme heat. PAO
are the most commonly used base stocks for synthetic gear
lubes for automotive applications and are formulated without
any viscosity index improvers (VI) since PAO have a
natural high viscosity index of the base fluid.
For example, a synthetic 75W-90 gear lube will flow
to temperatures as low as minus 40 deg. C. while a petroleum
based 80W-90 gear lubricant flow is retarded at these very
Synthetic gear lubes are
also is much more shear stable. A petroleum multi-viscosity
gear lube will contain VI in order to meet the
viscosity-spread requirements while the synthetic
multi-viscosity gear lube will not. In a test of two different
trucks using 75W-90 petroleum and synthetic gear lubes, the
truck with the petroleum gear lube actually heared out of
grade, lowering the viscosity considerably. The gears from
this test showed excessive wear indicative of low viscosity. By comparison, the truck with the synthetic based PAO showed
very little shear loss and showed acceptable performance at
the end of the test . Synthetic gear lubes are also
superior in the areas of oxidative and thermal stability and
there is significant data supporting this fact from both axle
manufacturers and synthetic oil manufacturers, however it is
not my intention to review the data in this book. Synthetic
gear lubes will also allow for a reduction in lube
temperature, easier shifting in automotive manual
transmissions and gearboxes such as on motorcycles and also
show a significant improvement in cold weather shifting
It is also important to
note that manufacturers also specify a friction modifier,
typically 4-oz., to be added when gear lube is replaced in an
axle that has a factory (or aftermarket) limited slip
some synthetic gear lubricants this is typically not the case.
As discussed previously, synthetic lubricants are not more
lippery than petroleum gear lubricants. I recently had
a customer that was told he needed to use twice as much
friction modifier with a synthetic gear lube due to the
increased lipperiness of synthetics. Again, this is not
true. I know of some premium quality synthetic gear lubricants
that do not require any friction modifiers to be added with
limited slip differentials. Check the gear lube manufacturers
specification to determine if a friction modifier is required
before putting it in. It will be of no benefit if you install
it when it is not needed. The best way to determine if a
friction modifier is required is to, after installing the
synthetic gear lube in a limed slip axle, go out and drive the
vehicle as you normally would but also be sure to make several
tight right and left turns, or find a location where you can
safely and slowly drive in a figure 8 pattern for a
minimum of eight to ten repetitions.
If you notice any chatter on turns then you most likely
need a friction modifier and you can take out the differential
filler plug and add it very easily. If you do not get any
chatter then you do not need friction modifier.
Extreme Pressure Additives and Performance
Another important aspect
of gear lubes to consider is extreme pressure (EP) performance
and additives. Both petroleum and synthetic gear lubricants
utilize EP additives where film strength and extreme pressure
performance are needed to combat high shock loading of the
phosphorus and/or chlorine based additives are often used,
although chlorine is not fully effective or may cause
corrosion concerns where water is present . The most common EP additives are a sulfur-phosphorus
combination in automotive gear lubes.
Extreme pressure additives
are activated by heat rather than by pressure.
When activated by heat they then chemically react with
the metal surfaces on the gears to form a film that wears or
polishes off slowly rather than allowing the mating surfaces
to weld together causing destruction of the gears, bearings
and even axle shafts once metal particles and fragments are
loose inside the axle housing and are circulated by the gear
Note that it takes time in
service for this protective film to develop but once that it
has developed it has a lower shear strength than the metal
used for the gears and thus reduces friction and heat. These
sulfur and phosphorus compounds can also tend to be corrosive
to non-ferrous parts. There are different GL ratings for
different type of gear lubes and applications. Applications
requiring a gear lube which is friendly to non-ferrous
parts (such as in
marine outboard and stern drive lower unit gears and certain
manual transmissions, which use aluminum or magnesium cases
and other non-ferrous bushings and components) typically will
specify a GL-4 rated gear lube which has a different EP
additive chemistry and is compatible with the non-ferrous
The GL ratings are
specified by the API and are as follows:
Specified for automotive spiral-bevel and worm gear
axles and some manual transmissions subject to mild service
and that can be sensitive to some EP additives.
These lubes usually contain rust and oxidation
inhibitors, defoamants and pour point depressants but do not
contain any EP additives or friction modifiers.
Specified for automotive worm gear axles that are
subject to more severe service than that which is covered
under the GL-1 specification.
Specified for manual transmissions and spiral-bevel
axles operating under moderately severe service.
Specified for hypoid gear service without shock loading, but
still moderate to severe service (high speed/low torque and
low speed/high torque). These
lubes may be used in manual transmissions and transaxles where
EP additives are acceptable and typically contain a different
zinc additive combination. This classification is still
commonly used, but is also obsolete. It is also a commonly
specified for marine outboard and stern drive lower unit gears
and bearings where the manufacturer specifies GL-4 rated
rates lubes are not recommended as a replacement for GL-5
rated lubes. GL-5 rated lubes shows significantly better
anti-wear (anti-score) properties than GL-4 rated oils under
similar service conditions
Specified for hypoid gears under shock loading and
severe service operating conditions used in cars and trucks.
This is the most common and widely used specification today.
These lubes have a high level of EP additives and,
depending on the manufacturer and formulation, could be mildly
corrosive to non-ferrous parts in certain applications.
This classification is obsolete and/or was never
formally adopted by the API, although I have seen some racing
type gear lubes advertised as high-performance GL-6.
It is more than likely advertised this way for
Specified for manual transmissions that do not have
synchronizers. The oxidation level and thermal stability is
higher than GL-1, GL-4 and GL-5.
Specified by the military for automotive gear lubes. It
combines the requirements of API GL-5 and MT-1.
Note that in although the
previous lubricant specifications have generally provided
satisfactory levels of performance for current automotive gear
units, some difficulties have been experienced in
low-temperature service because operating temperatures are not
always high enough to fully activate the various EP agents. This disadvantage is usually overcome by using a higher
dosage level of additive in lubricants intended specifically
for arctic-like service.
In cases such as arctic-like service synthetic gear
lubricants will be a major improvement over petroleum based
gear lubricants. I
know of some auto manufacturers that install synthetic
lubricants in vehicles destined for areas that experience
extended arctic weather conditions.
AMSOIL Severe Gear
gear lube outperforms every conventional, synthetic and
performance gear lube on the market. Dale Earnhart Inc. has
recently tested this gear lube in the differentials of their
race cars and it is the ONLY gear lube
they have tested with has solved their performance problems. AMSOIL
reported that one of the mechanics on the race team
remembered AMSOIL after they exhausted testing other
gear lubes that all failed, they then tested the AMSOIL Severe Gear lube and
it solved their problem. Stay tuned for future developments
SEVERE GEAR Synthetic Extreme Pressure (EP)
Formulated for the severe operating
conditions of today's pick-up trucks, SUVs,
heavy equipment and other hard working vehicles.
Severe Gear Synthetic Extreme Pressure (EP)
Lubricants are premium grade lubricants specifically
engineered for maximum performance in severe duty
applications. These state-of-the-art AMSOIL
formulations feature an exclusive blend of high
viscosity, shear stable synthetic base oils and an
extra treatment of high-performance additives.
AMSOIL Severe Gear Synthetic EP Lubricants maintain
their viscosity for long-lasting protection against
metal-to-metal contact. The proprietary AMSOIL
additives form an iron-sulfide barrier coating on
gear surfaces, providing the ultimate line of
defense against wear, pitting and scoring. AMSOIL
Severe Gear lubricants prevent "thermal runaway" - a
phenomenon caused by a lubricant's inability to
control friction and increased heat under
high-stress conditions. By preventing thermal
runaway, AMSOIL Severe Gear Synthetic EP Lubricants
inhibit rapid lubricant degradation and component
damage. Equipment runs better and lasts longer with
AMSOIL Severe Gear Synthetic EP Lubricants.
differentials, manual transmissions or other gear
applications where one or more of the following
standards are specified: API GL-5 & MT-1,
MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton
PS-037) for 250,000 miles, Mack GO-J, Arvin/Meritor
0-76N (75W-90) & 0-76M (75W-140), plus hypoid gear
oil specifications from all foreign and domestic
manufacturers such as GM, Ford and Daimler Chrysler.
Can also be used in rear axles where API Service
GL-4 lubricant is recommended.
Product Code: SVO
AMSOIL SEVERE GEARprovides performance beyond that
possible with conventional gear oil. These AMSOIL
custom products offer superior gear and bearing
protection, better friction and heat reduction,
increased efficiency and extended service life.
AMSOIL SEVERE GEAREP lubricants excel in hot and
cold temperature extremes. By design, they resist
breakdown from high heat, preventing acids and
carbon/varnish formation. Their waxfree construction
also improves cold flow properties, improving fuel
economy and cold weather shifting.
AMSOIL SEVERE GEARynthetic EP Lubricants are
excellent for severe applications, such as towing,
hauling, steep hill driving, commercial use,
plowing, racing, off-road use, rapid acceleration,
frequent stop-and-go operation and high ambient
temperatures. Higher horsepower, towing and hauling
capabilities of modern vehicles make turbo diesel
pick-ups, SUVs, vans and delivery/utility vehicles
especially prone to severe service. Other severe
duty vehicles include light, medium and heavy-duty
trucks, busses, heavy equipment, 4X4s, tow trucks,
race cars, tractors, and motorhomes.
AMSOIL SEVERE GEARynthetic Extreme
Pressure (EP) SAE 75W-140 Lubricant
Kinematic Viscosity @ 100C, cSt (ASTM
Kinematic Viscosity @ 40C, cst (ASTM D-445)
Brookfield Viscosity, cP (150,000 Max)
Flash Point, C (F) (ASTM D-92) 150C Min.
Pour Point, C (F) (ASTM D-97)
Copper Corrosion (ASTM D-130) 1b Max @ 121
C (250F) / 3hr
Falex Procedure B (ASTM D-3233) (failure
Foam Stability (ASTM D-892) (20/50/20
For product service life in
differentials, consult your owner's manual or the
Original Equipment Manufacturer (OEM) to establish
the application, NORMAL or SEVERE.
Cars, SUV, Light & Medium Duty Trucks
Drain at 100,000 miles of service or
according to the owner's manual, whichever
Drain at 50,000 miles of service or
according to the owner's manual, whichever
Heavy Duty Class, 8 Truck, Commercial
Follow the OEM drain interval (miles or
hours) for synthetic oil up to 250,000
miles. Otherwise, drain at twice the OEM
interval for conventional oil.
Follow the OEM drain interval (miles or
hours) for synthetic oil. Otherwise, drain
at twice the OEM interval for conventional
For product service life in non-differential
applications, consult owner's manual or the OEM for
either normal or severe synthetic oil service
intervals. Where service intervals are unavailable,
drain at twice the interval for conventional oil.
Gear oils should be changed more frequently when
operating vehicles or equipment in dusty or dirty
conditions unless the gear system is properly sealed
and equipped with membrane type breathers.
AMSOIL SEVERE GEAR (75W-140) replaces
competitors' 75W-140, 80W-140 and 85W-140 viscosity
AMSOIL SEVERE GEAR is compatible with
conventional gear oils, however mixing oils reduces
the benefits and nullifies the extended service life
AMSOIL SEVERE GEAR is compatible with
most limited slip differentials. If limited slip
differential chatter occurs, add AMSOIL Slip-Lock
friction modifier additive.
Note: AMSOIL does not support
extended drain intervals where water contamination
occurs. Check and service the gear oil frequently
when water contamination is possible.
AMSOIL has optimized gear lube
performance for specific operating conditions.
However, AMSOIL gear lubes are multi-functional and
may be used in many different applications. This
chart conveys the best AMSOIL recommendation based
on product design and operating environment.
First row product recommendations
offer superior performance in the respective
applications. Second row product recommendations
offer excellent performance in the respective
applications. The third row is exclusive to SAE
AMSOIL SEVERE GEAR75W-90 (SVG) and
75W-140 (SVO) synthetic gear lubes have a
performance emphasis on the extreme pressure and
high heat of today vehicle differentials.
AMSOIL Long Life 75W-90 (FGR) and
80W-140 (FGO) synthetic gear lubes have a
performance emphasis on 500,000 mile extended drain
intervals associated with larger sumps and lower
operating temperatures of over-the-road truck
AMSOIL 75W-90 synthetic gear lubes
will outperform conventional 80W-90 gear oils in all
applications and may be used as a replacement.AMSOIL
offers 80W-90 (AGL) synthetic gear lube for those
customers requiring this specific viscosity grade.
SEVERE GEAR Synthetic
Extreme Pressure (EP) 75W-90
Formulated for the severe
operating conditions of today's
pick-up trucks, SUVs, heavy
equipment and other hard working
Severe Gear Synthetic Extreme
Pressure (EP) Lubricants are premium
grade lubricants specifically
engineered for maximum performance
in severe duty applications. These
state-of-the-art AMSOIL formulations
feature an exclusive blend of high
viscosity, shear stable synthetic
base oils and an extra treatment of
high-performance additives. AMSOIL
Severe Gear Synthetic EP Lubricants
maintain their viscosity for
long-lasting protection against
metal-to-metal contact. The
proprietary AMSOIL additives form an
iron-sulfide barrier coating on gear
surfaces, providing the ultimate
line of defense against wear,
pitting and scoring. AMSOIL Severe
Gear lubricants prevent "thermal
runaway" - a phenomenon caused by a
lubricant's inability to control
friction and increased heat under
high-stress conditions. By
preventing thermal runaway, AMSOIL
Severe Gear Synthetic EP Lubricants
inhibit rapid lubricant degradation
and component damage. Equipment runs
better and lasts longer with AMSOIL
Severe Gear Synthetic EP Lubricants.
in differentials, manual
transmissions or other gear
applications where one or more of
the following standards are
specified: API GL-5 & MT-1,
MIL-PRF-2105E, Dana SHAES 234
(Formerly Eaton PS-037) for 250,000
miles, Mack GO-J, Arvin/Meritor
0-76N (75W-90) & 0-76M (75W-140),
plus hypoid gear oil specifications
from all foreign and domestic
manufacturers such as GM, Ford and
Daimler Chrysler. Can also be used
in rear axles where API Service GL-4
lubricant is recommended.
Product Code: SVG
AMSOIL SEVERE GEARprovides
performance beyond that possible
with conventional gear oil. These
AMSOIL custom products offer
superior gear and bearing
protection, better friction and heat
reduction, increased efficiency and
extended service life.
AMSOIL SEVERE GEAREP lubricants
excel in hot and cold temperature
extremes. By design, they resist
breakdown from high heat, preventing
acids and carbon/varnish formation.
Their waxfree construction also
improves cold flow properties,
improving fuel economy and cold
AMSOIL SEVERE GEARynthetic EP
Lubricants are excellent for severe
applications, such as towing,
hauling, steep hill driving,
commercial use, plowing, racing,
off-road use, rapid acceleration,
frequent stop-and-go operation and
high ambient temperatures. Higher
horsepower, towing and hauling
capabilities of modern vehicles make
turbo diesel pick-ups, SUVs, vans
and delivery/utility vehicles
especially prone to severe service.
Other severe duty vehicles include
light, medium and heavy-duty trucks,
busses, heavy equipment, 4X4s, tow
trucks, race cars, tractors, and
AMSOIL SEVERE GEARynthetic Extreme
Pressure (EP) SAE 75W-90
Kinematic Viscosity @ 100C,
cSt (ASTM D-445)
Kinematic Viscosity @ 40C,
cst (ASTM D-445)
Brookfield Viscosity, cP
(150,000 Max) @-40C
Flash Point, C (F) (ASTM
D-92) 150C Min.
Pour Point, C (F) (ASTM
Copper Corrosion (ASTM
D-130) 1b Max @ 121 C
(250F) / 3hr
Falex Procedure B (ASTM
D-3233) (failure load, lbf.)
Foam Stability (ASTM D-892)
service life in differentials,
consult your owner's manual or the
Original Equipment Manufacturer
(OEM) to establish the application,
NORMAL or SEVERE.
Cars, SUV, Light & Medium
Drain at 100,000 miles of
service or according to the
owner's manual, whichever is
Drain at 50,000 miles of
service or according to the
owner's manual, whichever is
Heavy Duty Class, 8 Truck,
Follow the OEM drain
interval (miles or hours)
for synthetic oil up to
250,000 miles. Otherwise,
drain at twice the OEM
interval for conventional
Follow the OEM drain
interval (miles or hours)
for synthetic oil.
Otherwise, drain at twice
the OEM interval for
For product service life in
consult owner's manual or the OEM
for either normal or severe
synthetic oil service intervals.
Where service intervals are
unavailable, drain at twice the
interval for conventional oil.
Gear oils should be changed more
frequently when operating vehicles
or equipment in dusty or dirty
conditions unless the gear system is
properly sealed and equipped with
membrane type breathers.
AMSOIL SEVERE GEAR
(75W-90) replaces competitors'
75W-90 and 80W-90 viscosity grades.
AMSOIL SEVERE GEAR is
compatible with conventional gear
oils, however mixing oils reduces
the benefits and nullifies the
extended service life
AMSOIL SEVERE GEAR is
compatible with most limited slip
differentials. If limited slip
differential chatter occurs, add
AMSOIL Slip-Lock friction modifier
does not support extended drain
intervals where water contamination
occurs. Check and service the gear
oil frequently when water
contamination is possible.
AMSOIL has optimized
gear lube performance for specific
operating conditions. However,
AMSOIL gear lubes are
multi-functional and may be used in
many different applications. This
chart conveys the best AMSOIL
recommendation based on product
design and operating environment.
First row product
recommendations offer superior
performance in the respective
applications. Second row product
recommendations offer excellent
performance in the respective
applications. The third row is
exclusive to SAE 80W-90 viscosity.
AMSOIL SEVERE GEAR75W-90 (SVG) and 75W-140 (SVO)
synthetic gear lubes have a
performance emphasis on the extreme
pressure and high heat of today
AMSOIL Long Life
75W-90 (FGR) and 80W-140 (FGO)
synthetic gear lubes have a
performance emphasis on 500,000 mile
extended drain intervals associated
with larger sumps and lower
operating temperatures of
over-the-road truck differentials.
synthetic gear lubes will outperform
conventional 80W-90 gear oils in all
applications and may be used as a
replacement.AMSOIL offers 80W-90 (AGL)
synthetic gear lube for those
customers requiring this specific
is the undisputed leader in synthetics.............
Synthetic Lubricants meet and exceed
manufacturer and API specifications.
With AMSOIL, you are using a superior product to
manufacturer branded, or any other brand of lubricant.
We have documented and certified independent ASTM
and SAE test data to prove it, along with 39
years of world class performance and hundreds of millions of miles of on-the-road testing.
Synthetics have proven to be the BEST.
AMSOIL also engineers and manufactures Ea Oil
Filters with Nanofiber Technology which have a 25,000 mile/1-year service life as well as
specialized filtration systems for commercial and fleet
applications in cars and light, medium and heavy trucks which
can filter particles down to less than one micron (a standard
full flow oil filter can only filter to approximately 20-25 microns, and at
a reduced efficiency) significantly reducing oil changes and eliminating
the majority of engine wear.
These filters have been proven by millions of miles of
over-the road trucks, construction equipment, severe duty and fleet
saves you time and money.
Exclusive 25,000 mile/one-year
change interval synthetic motor oil
the most stringent performance specifications of all major
U.S. and foreign automotive and truck manufacturers.
superior wear protection.
the life of your vehicles.
performance, fuel economy and efficiency.
oil and filtration products designed to deliver 1,000,000
miles for over-the-road trucks before engine overhaul.
by many national racing teams, fleets, police departments,
construction firms and trucking companies.
Oil Technology, LLC is a team of Engineers and Lubrication
and Filtration Specialists led by Dave Mann. Mr. Mann is an
AMSOIL Regency Platinum 7-Star Direct Jobber, Truck/Automotive Engineer
and Lubrication Specialist.
Direct Jobber Dave Mann Makes AMSOIL History
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Dealer or Preferred Customer and take advantage of all that we offer as you
use products in your own vehicles or begin your own AMSOIL
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group of Dealers anywhere which is very important when you
need support as use products and/or build your business.
addition, as a Dealer in our group you will receive exclusive
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We also have
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can achieve your goals.
possess the skills, desire and knowledge to answer
questions, solve problems, improve efficiency, reduce
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Read what our
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Customer Sold on AMSOIL Quality
That's what today's savvy consumers want.
According to marketing analysts, the average
consumer no longer accepts general sales pitches
full of empty promises. The Internet gives consumers
instant access to nearly every possible product or
service. They look for quality information, conduct
price comparisons and then make buying decisions.
The bottom line: more bang for their buck. And when
that consumer is raising seven children, top quality
products and savings are an even greater priority.
Scott Boring, Oakfield, N.Y., has seven children
with his wife Teri. He's looking for quality and
savings to keep his 1997 GMC Yukon, with a 5.7 litre
V-8 engine that "isn't noted for gas mileage,"
running down the road carrying his large family as
efficiently as possible.
A friend told Boring about AMSOIL products. He
promised better gas mileage - an important selling
point with today's high gasoline prices - more
efficient performance and longer life.
The vehicle had 40,000 miles on it when Boring
installed AMSOIL products bumper to bumper.
"I did it all at one time, just to see the
difference," Boring said. He installed
AMSOIL Severe Gear 75W-140 Synthetic Gear Oil, used AMSOIL Engine
Flush and then installed AMSOIL 10W-40 Synthetic
High Performance Motor Oil and AMSOIL Universal
Automatic Transmission Fluid.
"I especially like the ATF," Boring said. "The truck
shifts smoother and the transmission is quiet. All
you hear is the tires on the ground. I've tried
other synthetics, lots of them. I just never saw any
difference. But, with AMSOIL, I saw a difference
The first tankful of gasoline increased his mileage
from 15 mpg to 20.5 mpg. "I swear I didn't believe
it," he said. "I'm averaging between 19 and 21 mpg
all the time.
"This stuff is awesome and I'm letting all my
friends know about it."
AMSOIL Customers Appreciate Greater MPG
Although results vary because of a variety of factors, a common
denominator among AMSOIL motor oil users is an improvement in fuel
Independent testing reveals that AMSOIL Signature Series 0W-30 motor oil
passes the API Energy Conservation Sequence VI test with a rating 38
percent higher than the API minimum specifications.
"The test results show that AMSOIL has the potential to save energy by
conserving fuel," said Technical Services Manager Ed Kellerman. "In most
cases it can increase mileage, but at the very least you're getting
superior engine protection."
Ralph Sites, a police officer in Rustburg, VA, said he put AMSOIL 10W-40
Synthetic Motorcycle Oil in his 2002 GL 1800 Honda Gold Wing when it had
4,550 miles on the engine.
"I had been getting 30 miles per gallon," Sites said. "I was supposed to
be getting 40 to 45 miles per gallon."
His first oil change to AMSOIL improved his mileage to 38 miles per
gallon. At 6,500 miles on the engine, after replacing the final drive
oil with AMSOIL Severe Gear 75W-90 Gear Lube, he improved to 40 miles
"I switched to AMSOIL for the long-term gain. The improved gas mileage
was just a bonus. AMSOIL is less expensive than Honda's synthetic and I
don't have to change it as often. It's a win-win situation."
He bought the bike new in January 2002 and had put 12,000 miles on it in
August. He said the improved mileage he's gotten since switching to
AMSOIL has saved him $102 just in gasoline.
Jeff Bailey in Fulton, Mo., said his 1996 Lexus GS300 with 81,000
miles on it also gained fuel efficiency when he switched to AMSOIL
"The car wants premium gasoline," he said. "I drive about 18,000 miles a
year. I ordered your synthetic product and absolutely astounded.
"I was used to getting about 20 mpg overall and having a little low-rev
Since switching to AMSOIL motor oil, Bailey gets 24 mpg and uses regular
"The engine feels even more flexible," he said. "I've used AMSOIL now
for my wife's anemic Camry 2.2 litre and have calculated that I have
saved about $120," he said. "Thanks AMSOIL for an awesome product. You
have a customer for life."
Likewise, Lance Okeson of St. Paul, Minn., gained miles per gallon after
switching to AMSOIL motor oil in his 1995 Cutlass Supreme.
Okeson made the switch after learning about AMSOIL from a customer of
his at a quick lube where he works. His customer was so enthusiastic
about AMSOIL, Okeson did some research on the AMSOIL Website and decided
to try the products. A trip from the Twin Cities to Fargo, N.D., in a
steady 17 mile-per-hour wind, and back showed him an increase from 24
mpg to 30.5 mpg.
"I have never gotten 30 plus mpg with that car," Okeson said. "I have
two other vehicles that I switched over to AMSOIL motor oil. One is a
4x4 and the other is an old muscle car. I switched the transmissions and
the differentials in those vehicles as well."
ASE Master Technician Sold on
Mark Deschner, Friendswood, Texas,
is an ASE Master Technician and Manager of the West
Pear Land Tire & Auto Store.
He recently was able to demonstrate the superior
quality of AMSOIL Synthetic Lubricants when he had
to change out a leaking intake manifold on his 1991
Chevrolet 1/2 ton pickup truck, with more than
183,000 miles on the original engine.
"When my lead technician took the intake manifold
off, for the first time ever, he couldn't believe
how clean the lifter valley and the top of the
cylinder heads were on my truck," Deschner said.
The technician thought Deschner may have changed it
before. But Deschner assured him he had never had
the intake off before.
"He always made fun of me for only changing the oil
once a year and the filter twice a year," Deschner
said. "I think that seeing how clean the intake and
cylinder heads are in my truck has changed his mind
about AMSOIL products. I've always believed in them
and my truck runs AMSOIL for all lubricant needs."
He uses AMSOIL 10W-40 Synthetic Motor Oil,
Absolute Efficiency Oil Filter, TS31 2-Stage Air Filter,
GF111 Fuel Filter, 80W-90 Synthetic Gear Lube,
Universal Automatic Transmission Fluid, Synthetic
Multi-purpose Grease, P.I. Performance Gas Additive,
Rain Clear Windshield Protectant and Bosch
windshield wiper blades.
"As you can see, I have pretty much converted the
entire truck over to AMSOIL products," Deschner
Customer Sold on AMSOIL Quality
Peter Virgona of Merrick, N.Y. is a self-proclaimed
“I do a great deal of reading and research, always
looking for the best
oil,” Virgona said. “The more I read the more I
realized AMSOIL was the
best ‘true’ synthetic I could buy. After using Mobil
1 since 1986, I made
the switch to AMSOIL.”
Virgona is a warehouse worker, but he has many years
of experience working
He drives a 1999 Ford Crown Victoria that has nearly
98,000 miles on the
engine. He switched from Mobil 1 to
Synthetic Motor Oil (ASL).
“The difference was immediate and significant,”
Virgona said. “The idle
became much smoother. There are times I can’t tell
if the car is running.
It also became much more responsive to the gas
pedal, so much more
responsive my wife asked me what I did to the car.”
Virgona has owned the car for almost nine years.
“Not surprisingly, the gas
mileage improved significantly,” he said. “This car
always averaged 15
miles per gallon going back and forth from work. It
now averages 16.5 mpg.
That’s a 10 percent increase. I truly didn’t expect
such a big change.”
He waited to report his findings until after he had
driven the car at least
5,000 miles “to confirm that the numbers are average
and not just a fluke.”
Virgona also has installed Ea Air and
Oil Filters in
He told his sister-in-law about AMSOIL and then
changed her oil over to
AMSOIL 5W-30. She drives a 1996 Dodge Caravan with a
3.0 litre V6 engine.
According to Virgona, she had always used
conventional motor oil with
regular oil changes every 3,000 miles.
“Nonetheless, she had a significant amount of sludge
that was obvious under
the oil fill cap,” he said. “She also experienced a
very loud lifter noise
that would come and go. Presumably, the sludge was
affecting the oil
circulation to the lifters.”
Oil consumption in the van was also increasing,
using about one quart every
1,500 to 2,000 miles.
“I switched the van to AMSOIL and put in a new
filter,” Virgona said.
“Within 1,000 miles the lifter noise was all but
gone. By 3,000 miles,
virtually all the sludge was gone. I drained and
refilled the oil a second
time with AMSOIL 5W-30. The oil consumption is now
down to one quart every
3,000 miles, with no more lifter noise.
“I am very happy with AMSOIL and plan to use it from
now on. I recommend it
to anyone who wants a great synthetic oil.”
Virgona buys his products through the AMSOIL
website. “I always get my
product within 48 hours,” he said. In fact, he just
had a case shipped to
his father in-law in Florida because he believes in
AMSOIL products and
wants others to experience their benefits. In fact,
becoming a Dealer.
Virgona respects that he can get detailed technical
AMSOIL just by checking the website. “AMSOIL puts
out performance test
results for everyone to see. I definitely appreciate
“People are usually very, very loyal to AMSOIL. They
know it’s the best.”
Life to a Sweet Old Cadillac. Making a skeptic into a believer again.
I thought you
might appreciate hearing my AMSOIL story. When the opportunity arose
last year to purchase my mother-in-law's 1987 Cadillac DeVille, I jumped
at the chance. A true low mileage survivor, it was in near pristine
condition. I was proudly showing it off to a mechanic friend when he
said, "Uh-oh, you bought an HT-4100? Good luck buddy."
After much research I understood what he meant. The HT-4100 was rumored
to be one of the most troublesome engines Cadillac ever built. The
problems are numerous: an aluminum block with cast iron heads that
expand and contract at different rates causing premature head and intake
gasket failure, coolant loss into the oil, and finally main and rod
bearing failure. They also have a heavily loaded distributor gear, weak
timing gears, and sludging issues.
My first thought was, if ever an engine needed AMSOIL, it's this one. I
first heard about AMSOIL at the old Brohman Dragway in the late 1970s
from a fellow racer who swore by it. For the past 10 years, I've used
various synthetic oils with favorable results, but never AMSOIL. Then I
talked with Dave Mann, the AMSOIL Dealer in my home town, and told him
my story. Having spent 19 years as a lubrication specialist with Ford,
Dave knows his stuff. He made several recommendations, and shared with
me his excellent e-book on motor oils.
I also asked around at the Cadillac owners group I belong to, and almost
every one of them said, "Don't buy AMSOIL! It's too expensive and won't
do you any good. You need this or that oil with this or that additive,"
and so on. So who was I to believe?
Having spent over 25 years in advertising and marketing, I have a strong
skepticism for extravagant claims made by manufacturers. Usually, when
you hear impressive adjectives like "advanced" and "superior," someone
just wants your money or your vote (or both). So I read the science;
from AMSOIL and from several independent studies. I came to the
conclusion that it really is an excellent product. It also intrigued me
that one of the primary sales points made by AMSOIL is to convince you
to buy LESS of their product. That kind of marketing is contrary to
anything I've experienced, and elevates AMSOIL's credibility level
I switched the Cadillac over to AMSOIL 5W-30 (ASL) last fall, then put
in AMSOIL 10W-30 (ATM) this spring (even though it's not a turbo, I like
the extra wear protection offered by this formula). Rather than letting
the oil go a full year, I change it every six months, during which time
it accumulates about 6,000 miles. My dad was an auto mechanic and taught
the 3,000-mile oil change rule like it was the 11th commandment - that
kind of conditioning is hard to overcome. With this frequency, I still
spend less money than if I changed the oil on a three-month/3,000-mile
schedule. I use the money I save to have drain samples tested by an
independent lab each time.
The Deville now has 50,000 miles and runs like a fine Swiss watch. I
have not had a single problem with the 'troublesome' HT-4100 engine. It
runs roughly 10 degrees cooler than with regular oil, and my gas mileage
has increased by 10%. It has become my mission to get 200,000 miles from
this car. With AMSOIL, I might just make it.
As an addendum, I also recently switched my wife's 2003 Oldsmobile
Silhouette minivan to AMSOIL. Since we've owned it, this car has had a
lifter clatter for the first 10 seconds on cold starts. Literally, on
the first start after putting in AMSOIL, the clatter was gone.
Thanks AMSOIL. By making a superb product that truly does what you say
it will do, you've given new life to a sweet old Cadillac, and made a
believer out of this devout skeptic. (see
photos of car and engine)
Traverse City, Michigan
HDT Sets AMA Land Speed Record
Hayes Diversified Technologies (HDT), located in
Hesperia, California, produces diesel powered tactical military
motorcycles for the U.S. armed services as well as the UK and EU NATO
countries. Founded in 1961, the company originally manufactured
electro-mechanical switches and relays to the military & aerospace
The new HDT motorcycles are diesel machines combining both power and
environmentally friendly performance efficiency. We are talking about a
bike that gets 100 miles to the gallon AND can do 100 mph.
The HDT team was out on the Bonneville Salt Flats
earlier this month, striving to establish new national and world
records. Displaying the AMSOIL colors while going through the paces at
Bonneville, they offered up quite a number of very strong endorsements
with virtually no prompting. We noticed an increase in horsepower right
away when compared to Delvac 1,¯ said Fred Hayes, founder/CEO of HDT.
What was quite surprising was the condition of the engine after a
50-mile run-in and over 120 full-throttle dyno runs. The camshaft
bearings, the small and large end rod bearings, didn't even look like
they had been run. During that series of dyno runs, we registered the
highest horse-power and torque readings ever.¯
Dave Anderson, AMSOIL Technical Product Manager, had flown to Bonneville
to witness and participate in the pursuit of new land speed records.
Hayes said to Anderson, "Our testing proved that AMSOIL Series 3000
5W-30 Heavy Duty Diesel Oil provided better cam bearing lubrication,
better transmission operation and less blow-by than our previous oil. We
picked up just over one horse power at the rear well." This is a 3.7%
increase and worth a 1 tooth higher gear ratio. In addition, it appears
that overall coolant temperature was down about five degrees. That is
roughly a 2.5% decrease in operating temperatures.
Very few bikers would be opposed to increased horsepower with lower
operating temps, simply by switching over the lubricants.
With over a year of testing, we have found that AMSOIL products
continually outperform all other lubricants. AMSOIL provides improved
performance, increased fuel economy, lower oil consumption, and
significantly reduced engine wear in all operating conditions.
AMSOIL Boosts Bottom Line for
Burnell Keller of Castroville, Texas hauls a lot of
corn. Saving downtime and maintenance costs boost
his bottom line.
Since the 1960s, Keller Grain, Inc., at Castroville
has bought high quality white and yellow corn from
local farmers and trucked it to processing plants
across the state of Texas. "These trucks put on
about 12,000 miles a month," said Keller, the
He was running Exxon XD3-30 motor oil in his
Freightliner and changing it every 10,000 miles. He
heard AMSOIL products could cut his operating and
maintenance costs in half, provide better fuel
economy, easier starts and extended oil drains at
least three times longer than he was getting.
"We were fixing to extend the drain to 15,000
miles," Keller said. "But a sample of the Exxon
motor oil analyzed at 10,000 miles came back saying
the oil needed to be changed. I said, let's give
AMSOIL a whirl."
After an engine flush, Keller installed
15W-40 Heavy Duty Diesel and Marine Oil in his
Freightliner, with more than 400,000 miles on the
"We did this procedure three times at a 15,000-mile
analysis and filter change only," Keller said. "Each
time the oil sample report came back saying the oil
was good for continued use."
After the third round of analysis, the oil was
changed. Keller plans to continue with 15,000-mile
analysis and filter changes and to continue to use
the same oil for an interval of 50,000 miles.
"That's about five times longer than before," Keller
said. "It's very good. Keller Grain is now convinced
that AMSOIL is a superior product and that anybody
can save money using AMSOIL products."
New Life for Dodge Ram
Preferred Customer Lyle Reinier from Mesa, Ariz. has
been using AMSOIL products for four years with complete satisfaction. He
said that when he started using them in his 2001 Dodge Ram they “changed
the way it ran.”
Now Reinier drives a 2004 Dodge Ram. He uses AMSOIL Synthetic 5W-30 in
the engine, AMSOIL Synthetic Universal Automatic Transmission Fluid
the transmission and 80W-140 Long Life Gear Lube.
“AMSOIL has given this truck life that it was hiding before,” said
Reinier. Reinier said the Ram now pulls stronger and runs smoother than
it did before. He made the switch to AMSOIL when the truck hit the
3,000-mile mark. “What comes as a surprise to me is that my Dodge dealer
had no problem doing a complete drain and fill with AMSOIL,” said
Reinier said the dealer removed all the Dodge transmission fluid and
refilled the truck with AMSOIL ATF. “Within a mile or two I could feel
the transmission was smoother and showed a difference in how it
performed,” said Reinier.
Reinier also uses AMSOIL in his dirt bikes. He and his wife have been
using AMSOIL 0W-40 Formula 4-Stroke since it was introduced. Within the
last year, Reinier performed a big bore and a valve job on their bikes
in search of more power.
“The insides of the cases, transmission gears and crank shafts were all
like brand-new,” said Reinier.
Reinier said the cylinder walls of each bike still
showed some cross hatching from the original bore. He also said the
bikes run quieter, smoother and cooler than they did before the switch
to AMSOIL. Both bikes have their original clutches and have logged over
4,000 trail miles.
Discovers a Burning Desire For AMSOIL
Dealer Mark Licht of Andover, N.J., was on a follow-up visit at Jimmy's
Service, Inc., of Hackettstown, N.J., when the integrity of AMSOIL ATF
was put to a new, on-the-spot test.
Licht showed shop owner Jimmy Naranjo several pieces of literature on
oil and ATF testing results. After listening to Licht talk about the
benefits of AMSOIL ATF, Naranjo turned to him and said, "You're full of
Licht continued to explain all the features and benefits that
has to offer, but Naranjo interrupted and told him, "There is only one
way to prove this ATF is any good."
Naranjo went to his shelf and opened two brands of transmission fluid he
uses and poured some of each onto his metal workbench. The shop owner
than poured some AMSOIL ATF next to the other two brands. "I had no idea
what this guy was about to do," said Licht.
Naranjo then took out his torch and put the flame directly on the first
brand of transmission fluid he commonly used. After about 30 seconds the
little puddle of transmission fluid started smoking. Naranjo proceeded
to the second brand he stocked in his service shop and repeated the
process. After another 30 seconds, that brand of transmission fluid
began smoking badly.
"Now it's AMSOIL's turn and I must admit I thought my fluid was going to
smoke out just like the others with that direct flame," said Licht.
Naranjo held the flame on the AMSOIL ATF for over two and a half minutes
and there was absolutely no smoke.
"He quickly turned to me and said he'd take a 30-gallon and a 55-gallon
drum of the ATF," said Licht. "We couldn't believe our eyes!"
Now Jimmy's Service stocks the entire XL line of oils, all of the AMSOIL
25,000-mile oils, AMSOIL diesel oils and all of the AMSOIL diesel
additives. The shop also carries AMSOIL filters, 2-cycle oils, Power
Foam Engine Cleaner and Home Heating Fuel Extender.
CROSS COUNTRY TRIP PROVES AMSOIL PERFORMS
Owners of motorhomes, who often travel long distances, are particularly
concerned with finding ways to save on fuel costs.
A Texas man discovered AMSOIL motor oils and lubricants lived up to all
of his expectations in a journey from Texas to Alaska and back in 2004.
"I have a 1998 Dutch Star by Newmar 38-foot motorhome with a 300 horse
power Cat engine," said Shelby Rash, Richardson, Texas. "I also tow a
car behind." Throughout 2003,
Rash averaged 7.1 miles per gallon.
"I use AMSOIL products and believe in them," Rash said.
He took AMSOIL 15W-40 Heavy Duty Diesel and Marine Oil,
an AMSOIL oil
filter, Torque-Drive Synthetic Automatic Transmission Fluid,
75W-90 Synthetic Gear Lube, AMSOIL Universal Automatic Transmission
Fluid, for power steering/hydraulics, and the AMSOIL Synthetic
Multi-Purpose Grease to a shop in Dallas in January 2004.
"They installed AMSOIL in everything, including the grease fittings,"
Rash said. "I installed a new AMSOIL air filter and oiled the front wet
axles myself. I filled up with diesel and added AMSOIL Cetane Boost and
Diesel Fuel Additive to the tank, as well."
Then Rash took his four-month, 11,000-mile trip.
"I used the two additives each time I filled," he said. "I also attended
two RV rallies where I 'dry-camped with a generator' for a total of 10
days during this time." The only thing he did was change the oil filter
during that time.
"I averaged 8.6 mpg since January 2004 for these 11,000 miles," Rash
said. "This sure helped with the high fuel prices. Just by changing to
AMSOIL I averaged 1.5 mpg better.
"Is AMSOIL worth a try? I think so."
Performance Oil Technology, L.L.C. 888-879-1362
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View the Action News article, Dave Mann Makes AMSOIL History
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