AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube

AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube is engineered for the demanding requirements of heavy-duty, high-stress, and high-performance applications, including automotive, commercial, and recreational vehicles. Use in differentials, manual transmissions and other gear applications requiring any of the following specifications: API GL-5,MT-1, MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton PS-037), Mack GO-J or other GL-5 based specifications from vehicle manufacturers, including Ford, GM and Chrysler. Can also be used in axles where an API GL-4 lubricant is recommended.

AMSOIL SEVERE GEAR 80W-90 provides superior performance and replaces competitors’ 80W-90 gear oils. It is formulated to exceed the requirements of front and rear differentials, transfer cases, transaxles, manual transmissions, oil-lubricated wheel bearings and steering gear boxes.

4.9
star rating from
81
total reviews

This product is available in:

Individual Quart Easy-Pack
Quart Bottles
5 Gallon Pails
16 Gallon Kegs
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Product Code:

AGLPK-EA

Review by Dave Mann

AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube Description

AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube is engineered for the demanding requirements of heavy-duty, high-stress, and high-performance applications, including automotive, commercial, and recreational vehicles. Use in differentials, manual transmissions and other gear applications requiring any of the following specifications: API GL-5,MT-1, MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton PS-037), Mack GO-J or other GL-5 based specifications from vehicle manufacturers, including Ford, GM and Chrysler. Can also be used in axles where an API GL-4 lubricant is recommended.

AMSOIL SEVERE GEAR 80W-90 provides superior performance and replaces competitors’ 80W-90 gear oils. It is formulated to exceed the requirements of front and rear differentials, transfer cases, transaxles, manual transmissions, oil-lubricated wheel bearings and steering gear boxes.

AMSOIL SEVERE GEAR® 100% Synthetic Extreme-Pressure (EP) Gear Lube

Formulated for the severe operating conditions of today’s pickup trucks, SUVs, heavy equipment and other hard-working vehicles.

AMSOIL SEVERE GEAR® 100% Synthetic Extreme-Pressure (EP) Gear Lube is a premium-grade gear oil specifically engineered for maximum performance in severe-duty applications. It maintains its 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 helps prevent “thermal runaway” – a phenomenon caused by a lubricant’s inability to control friction and increased heat under high-stress conditions. By controlling thermal runaway, AMSOIL SEVERE GEAR 100% Synthetic EP Gear Lube inhibits rapid lubricant degradation and component damage – helping equipment run better and last longer.

AMSOIL SEVERE GEAR®️ 80W-90 100% Synthetic Extreme-Pressure (EP) Gear Lube
  • Advanced protection against wear
  • Controls against wear
  • Protects against rust and corrosion
  • Helps reduce operating temperatures
  • Maximum efficiency
  • Long oil, seal & equipment life
  • Flexible Easy-Pack for clean, fast installation

Performance

AMSOIL SEVERE GEAR provides performance far beyond what is possible with conventional gear oil. We design our gear lubes to provide superior gear and bearing protection, better friction and heat reduction, increased efficiency and extended service life.

Temperature Extremes

SEVERE GEAR excels in hot and cold temperature extremes. By design, it resists breakdown from high heat, preventing acid and carbon/varnish formation. Its wax-free construction also improves cold-flow properties, improving fuel economy and cold-weather shifting.

Applications

AMSOIL SEVERE GEAR is 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 pickups, SUVs, vans and delivery/utility vehicles especially prone to severe service. Other severe-duty vehicles include light-, medium- and heavy-duty trucks; buses; heavy equipment; 4X4s; tow trucks; race cars; tractors; and motor homes.

TYPICAL TECHNICAL PROPERTIES

AMSOIL SEVERE GEAR® 80W-90 Synthetic Extreme-Pressure (EP) Gear Lube (AGL)

Kinematic Viscosity @ 100°C, cSt (ASTM D445) 15.5
Kinematic Viscosity @ 40°C, cSt (ASTM D445) 120.2
Viscosity Index (ASTM D2270) 135
Brookfield Viscosity, cP @ (°C) (ASTM D2983) 46,200 (-40)
Flash Point, °C (°F) (ASTM D92) 208(406)
Pour Point, °C (°F) (ASTM D97) -42(-44)
Copper Corrosion (ASTM D130) @ 121 °C (250°F) / 3hr 1b
Foam Stability (ASTM D892) 0/0, 0/0, 0/0

SERVICE LIFE

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

Note: AMSOIL does not support extended drain intervals where water contamination occurs. Check and service the gear oil frequently when water contamination is possible.

APPLICATIONS

Use in differentials, manual transmissions and other gear applications requiring any of the following specifications: API GL-5,MT-1, MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton PS-037), Mack GO-J or other GL-5 based specifications from vehicle manufacturers, including Ford, GM and Chrysler. Can also be used in axles where an API GL-4 lubricant is recommended.

AMSOIL SEVERE GEAR 75W-90 provides superior performance and replaces competitors’ 75W-90 and 80W-90 gear oils. It delivers the best fuel efficiency and cold-temperature performance of the SEVERE GEAR oils.

AMSOIL SEVERE GEAR 75W-110 provides superior performance and replaces competitors’ 75W-110, 75W-90 and 80W-90 gear oils. It delivers better viscosity protection than SEVERE GEAR 75W-90.

AMSOIL SEVERE GEAR 75W-140 provides superior performance and replaces competitors’ 75W-140, 80W-140 and 85W-140 gear oils. Use where these viscosities are required by OEMs and where maximum viscosity protection is needed for extreme severe-duty applications.

AMSOIL SEVERE GEAR 80W-90 provides superior performance and replaces competitors’ 80W-90 gear oils. It is formulated to exceed the requirements of front and rear differentials, transfer cases, transaxles, manual transmissions, oil-lubricated wheel bearings and steering gear boxes.

AMSOIL SEVERE GEAR is compatible with conventional and synthetic gear oils. Mixing AMSOIL gear oil with other oils, however, will shorten the oil life expectancy and reduce the performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed. Aftermarket oil additives, other than those specified by AMSOIL, are not recommended for use with AMSOIL gear oil.

AMSOIL SEVERE GEAR is compatible with most limited-slip differentials. For applications that require additional limited-slip friction modifier, add AMSOIL Slip Lock.®

PRODUCT WARRANTY

AMSOIL products are backed by a Limited Liability Warranty. For complete information visit AMSOIL.com/warranty.aspx.

HEALTH & SAFETY

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS). An SDS is available at AMSOIL.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Don’t pollute. Return used oil to collection centers.

Reviews

5

star rating

Great procuct

Have not had a chance to use it yet, I will on my 2001 F350 diesel as soon as I can it on a lift

5

star rating

Over 25 Years of AMSOIL USE

Best lubricate available! My son put me onto AMSOIL over 25 years ago. I use it on all my equipment on the ranch. Trucks, tractors, feed wagons, 4 wheelers and gear boxes. I've had two run around little pickups that I put over 400,000 miles on running on all kinds of roads dirt, gravel and paved. And only changed the oil every 25k miles. Even on my tractors I have been able to double the hours before changes. Yes American runs on Freedom and that's not Maga it's real AMERICANS that run on AMSOIL !

5

star rating

Quiet the whine

Cut the whining noise down by 50%. Love it! The bag is a great design too.

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