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AMSOIL P.i.® Performance Improver Gasoline Additive
Product code : APICN-EA
- Restores up to 14% horsepower1
- Restores GDI fuel injectors to 100% flow rate after one tank of fuel2
- Improves fuel economy
- Reduces need for costly higher-octane fuel
- Helps prevent carbon rap
- Controls pre-ignition knock
- Compatible with capless fuel systems
1Based 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.
2ASTM D5598(M) – 2013 Buick Regal test vehicle.
AMSOIL P.i.® Performance Improver Gasoline Additive
AMSOIL P.i. is a potent gasoline performance improver with concentrated detergent that aggressively cleans stubborn, power-robbing deposits from injectors, valves and the combustion chamber. Effective in port and direct injection systems. Bottle compatible with capless fuel systems. Cleans entire fuel system in one tank of gasoline. For use with 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 (6,400 km). Do not use with diesel or two-stroke engines.
See the Product Data Bulletin for full details.
MAXIMUM DEPOSIT CLEAN-UP
- Helps keep valves clean and moving freely.
- Aggressive additives attack the most common forms of engine deposits and limit their effects.
REMOVES FUEL-INJECTOR DEPOSITS
- P.i. removes deposits and keeps injectors functioning as they should.
- Testing shows P.i. restored GDI fuel injectors to a 100% flow rate after one tank of fuel.2
RESTORES HORSEPOWER
- Third-party testing demonstrated performance of P.i. using a 2016 Chevrolet* Silverado* with 100,616 miles on the odometer.
- Following a single treatment with P.i., the truck measured an incredible 14% improvement in horsepower.1
CLEANS COMBUSTION CHAMBER DEPOSITS
- Fights combustion chamber deposits to help restore power, control knock, increase fuel economy and reduce the need for higher-octane fuels.
- Protects against compression loss, difficulty starting and rough idling.
- Reduces possibility of "carbon rap," when deposit buildup causes the piston to hit the cylinder head.
- Decreases the possibility of pre-ignition "knock" or "pinging."
CAPLESS-COMPATIBLE BOTTLE
- Bottle is fully compatible with capless fuel systems.
1Based 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. 2ASTM D5598(M)-2013 Buick Regal test vehicle.
AMSOIL P.i.® Performance Improver Gasoline Additive
Warranty
WARRANTYData Bulletin
SDS
AMSOIL P.i.® Performance Improver Gasoline Additive
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P.I. Performance ImproverBy FRANK, a Verified Buyer from Parrish, Florida on May 21, 2025Put it into my 2020 Ford F-150 and noticed a slight improvement in both mileage and performance. I would recomend.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Noticeable performance improvementBy TOBY, a Verified Buyer on May 19, 2025Definitely an improvement in acceleration and performance. Probably a small increase in mpg as well.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Amazingly YES!By JOHN, a Verified Buyer from West Tennessee on May 18, 2025This turns 87 octane into 93 octane which means higher compression and better fuel mileage. If you can find non-ethanol gasoline, add one of these to your tank and fuel up with the non ethanol. AMAZING RESULTS! You’ll notice you can go quite a long way on that tank. You’ll also notice a little pep in your engine. This is super great for turbo engines!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Simply amazingBy BRYAN, a Verified Buyer from Ohio on May 17, 2025I put this in my ole chevy and she seems to be running better and definitely idles smoother i would recommend to put in all older vehicles for sure.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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missfireBy RANDLE, a Verified Buyer from colotado on May 16, 2025was told needed new injectors after changing coils , still miss when first started until warmed up occasionally at red light. put 1 bottle of treatment and tank of premium with Amsoil octane booster ,been running great for 4 mo.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Noticeable differenceBy KEVIN, a Verified Buyer from PA on May 16, 2025I have put this through a number of vehicles and noticed a difference in all of themWas this review helpful?
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Engine seems to love it!By MICHAEL, a Verified Buyer from Vancouver Canada on May 14, 2025Very simple to add it at time of gas fill up and it seems to improve gas mileage and engine performance.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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P.I.By Nunesio, a Verified Buyer on May 11, 2025Great productBottom LineYes, I would recommend this to a friend.Was this review helpful?
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Effective and SafeBy LOUIE, a Verified Buyer on May 10, 2025I’ve used P.I. on numerous occasions, always with good results.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Smooth accelerationBy ALFREDO, a Verified Buyer from Austin, Tx on May 08, 2025Recently replaced plugs and wiring on 2009 Lexus. Used the additive 2 months later. Acceleration is superbBottom LineYes, I would recommend this to a friend.Was this review helpful?
