AMSOIL P.i.® Performance Improver Gasoline Additive

AMSOIL P.i. Performance Improver Gasoline Additive is a potent, deep-cleaning gasoline performance improver featuring concentrated detergents that aggressively clean stubborn, power robbing deposits from injectors, valves and combustion chambers. P.i. cleans your entire fuel system and restores up to 14% horsepower in one tank of gasoline (based on third-party testing in a 2016 Chevrolet Silverado 1500, 5.3L V-8 GDI with 100,616 miles, using one tank treated with AMSOIL P.i. Actual results may vary). The P.i. bottle is fully compatible with the capless fuel systems of modern vehicles for easy application.

P.i. removes stubborn deposits and keeps injectors functioning as they should. Testing shows P.i. restored GDI fuel injectors to a 100 percent flow rate after one tank of fuel. (ASTM D5598(M) – 2013 Buick Regal test vehicle).

4.9
star rating from
713
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This AMSOIL product is available in:

Individual 12 oz. Bottles
Cases of 12
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Product Code:

APICN-EA

AMSOIL P.i.® Performance Improver Gasoline Additive Review by Dave Mann

AMSOIL P.i.® Performance Improver Gasoline Additive Description

AMSOIL P.i. Performance Improver Gasoline Additive is a potent, deep-cleaning gasoline performance improver featuring concentrated detergents that aggressively clean stubborn, power robbing deposits from injectors, valves and combustion chambers. P.i. cleans your entire fuel system and restores up to 14% horsepower in one tank of gasoline (based on third-party testing in a 2016 Chevrolet Silverado 1500, 5.3L V-8 GDI with 100,616 miles, using one tank treated with AMSOIL P.i. Actual results may vary). The P.i. bottle is fully compatible with the capless fuel systems of modern vehicles for easy application.

P.i. removes stubborn deposits and keeps injectors functioning as they should. Testing shows P.i. restored GDI fuel injectors to a 100 percent flow rate after one tank of fuel. (ASTM D5598(M) – 2013 Buick Regal test vehicle).

AMSOIL P.i. Performance Improver Gasoline Additive

AMSOIL P.i. Performance Improver Gasoline Additive is a potent, deep-cleaning gasoline performance improver featuring concentrated detergents that aggressively clean stubborn, power robbing deposits from injectors, valves and combustion chambers. P.i. cleans your entire fuel system and restores up to 14% horsepower in one tank of gasoline (based on third-party testing in a 2016 Chevrolet Silverado 1500, 5.3L V-8 GDI with 100,616 miles, using one tank treated with AMSOIL P.i. Actual results may vary). The P.i. bottle is fully compatible with the capless fuel systems of modern vehicles for easy application.

AMSOIL P.i. Performance Improver Gasoline Additive
  • Restores up to 14% horsepower1
  • Reduces need for costly higher octane fuel
  • Reduces noise from carbon rap and pre-ignition
  • Controls pre-ignition “knock”
  • Improves fuel economy
  • Capless compatible

Maximum Deposit Clean-up

AMSOIL P.i. features aggressive additives that attack the most common forms of engine deposits and limit their effects.

Removes Fuel Injector Deposits

Most new engines feature gasoline direct-injection (GDI) to boost power and improve fuel economy. These injectors are located inside the intense heat and pressure environment of the combustion chamber, making them particularly vulnerable to deposits. Extreme pressure combined with incomplete fuel combustion can lead to dramatically increased soot (particulate matter) levels. Direct injection typically creates 30 to 40 times more soot than port fuel injectors (PFI). Even a minimal amount of injector fouling can lead to increased pollution and wear and decreased power and fuel economy.

Injector deposits:

  • Decrease efficiency, power and fuel economy
  • Increase exhaust emissions
  • Contribute to poor starting and rough idle

P.i. removes stubborn deposits and keeps injectors functioning as they should. Testing shows P.i. restored GDI fuel injectors to a 100 percent flow rate after one tank of fuel. (ASTM D5598(M) – 2013 Buick Regal test vehicle).

Because Motorcycle Octane Boost contains active detergents, it can help maintain the cleanliness of combustion chambers and fuel-delivery systems for improved efficiency. For cleanup, however, AMSOIL recommends treating gasoline with AMSOIL Quickshot,® which contains a greater concentration of cleaning agents

amsoil pi improver horsepower test results showing improved horsepower after the gas additive was used
2016 Silverado Horsepower Comparison Before & After Performance Improver Additive

Restores Horsepower

We set out to once again demonstrate the superior performance of P.i. through third party testing using a purchased 2016 Chevrolet Silverado with 100,616 miles on the odometer. Prior to testing, the truck was run on a chassis dyno and measured for HP. The 5.3L GDI engine was then disassembled, photographed and reassembled. Following a single tank of of fuel treated with P.i. driving at highway speeds, the truck was again strapped to the dyno. It measured an incredible 14% improvement in horsepower. The engine was then disassembled once again to see the impact P.i. had on deposits. The images to the right demonstrate the powerful cleaning performance of P.i on injectors and cylinder heads to significantly restore power and efficiency.

Fights Intake Valve Deposits

Valve deposits alter or restrict airflow patterns in the cylinder. They disrupt the balanced air/fuel ratio by momentarily absorbing and releasing fuel. The deposits can also cause valve sticking by getting in the way of the valve stem and guide.

Intake valve deposits:

  • Decrease power and efficiency
  • Increase exhaust emissions
  • Lead to potential valve failure

AMSOIL P.i.®️ Performance Improver helps keep valves clean and moving freely.

Cleans Combustion Chamber Deposits

Combustion chamber deposits increase compression and absorb heat during combustion. Later, they release that heat during the intake cycle. In some engines deposits can cause the piston to actually hit the cylinder head – a process known as "carbon rap." The deposits can also flake off and become trapped between the valves and valve seat, resulting in compression loss.

Higher compression and stored heat increase the likelihood of pre-ignition “knock” when the fuel spontaneously combusts prior to spark ignition. This increases emissions and may cause engine damage. Most vehicles have sensors that adjust spark timing to prevent knock. Although audible “knock” is controlled, power is lost from retarded timing and engine efficiency suffers. Higher octane fuels can be used to help prevent the phenomenon. As a vehicle ages, more-expensive, higher octane fuel is needed to keep it operating at peak performance.

Combustion chamber deposits:

  • Increase the possibility of “carbon rap”
  • Contribute to compression loss, difficult starting and rough idling
  • Increase the possibility of pre-ignition “knock” or “pinging”

AMSOIL P.i. fights combustion chamber deposits which helps restore power, control knock, increase fuel economy and reduce the need for higher-octane fuels.

Capless-Compatible Packaging.

Many new vehicles have replaced traditional fuel caps with capless systems. The threads on most bottles restrict them from opening the flap inside the fuel neck and also make removing the bottle difficult. The P.i. bottle is fully compatible with capless fuel systems.

RECOMMENDATIONS

  • For use in gasoline powered cars and trucks.
  • Treats up to 30 gallons. Add entire bottle to tank at fill-up.
  • For best results, clean your fuel system with P.i. every 4,000 miles.
  • For large gas tanks, treat with two bottles of P.i. Using more than two bottles per treatment is not recommended.
  • Safe for use with catalytic converters, oxygen sensors, oxygenated gas and up to 15% ethanol blended gas.
  • Do not use with diesel or E85 fuel or two-stroke engines.

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 via the Internet at AMSOIL.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Don’t pollute

AMSOIL PRODUCT WARRANTY

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

AMSOIL P.i.® Performance Improver Gasoline Additive Reviews

5

star rating

Amazing Product

I used to use Sea Foam and then decided to try the Amsoil additive. My GMC Sierra 1500 truck (over 175,000) idled better and ran smoother. Then when the check engine light came on a couple of times, I added this and the light went off! I've used this in my boat (Mercury 75 4-Stroke), as well and it works wonders there, as well. I now have a box of these I use regularly.

5

star rating

Gasoline Performance improver

This product was everything i expected it to be.... would highly recommend !!!

5

star rating

New Pickup and Old

New customer and just started using Upper Cylinder Lube. In new truck, sounded better on first tank. Will know about gas milage in a few days when we take a highway trip. Gave one to my brother-in-law and he said his computer was saying 5 mpg increase on 2.7 L Ford truck with over 200,000 miles. Gas milage said 30 mpg.

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Additional AMSOIL P.i.® Performance Improver Gasoline Additive Resources

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