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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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First timeBy FRED, a Verified Buyer from SW Michigan on June 23, 2025This is my first time using this product so far everything is good. I hope it is cleaning my system out and I hope it increases my gas mileage. I will follow up and let everybody know what I have found out.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Great fuel treatmentBy ERIC, a Verified Buyer from GA on June 22, 2025used to remove the emissions light, works great.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Impressive boost to fuel economyBy STEVEN, a Verified Buyer from Canada on June 20, 2025Boosted the fuel economy on a 2010 tacoma with 396K on the ODO. Notable improvement in performance so will use again!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Want cleaner combustion chambers?By Bent, a Verified Buyer from Nevada on June 14, 2025I use this gasoline improver in two of my cars and it always cleans up the combustion chambers very well. If it does that imagine how good your fuel injectors are gonna look like and perform.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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plBy Bart, a Verified Buyer on June 12, 2025All Iuse.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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So far so goodBy GLENN, a Verified Buyer on June 12, 2025Works great!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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A good clean up!By MICHAEL, a Verified Buyer on June 05, 2025I really see a difference!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Excellent productBy GREG, a Verified Buyer from Burg on June 05, 2025Works longer than other products from other suppliers ..Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Great cleanerBy RICKY, a Verified Buyer from Colorado on June 04, 2025I run this in all my cars every oil change and I’ve noticed in one that hadn’t had a cleaning in a while got a little bit better gas mileageBottom LineYes, I would recommend this to a friend.Was this review helpful?
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varnished fuel injectorBy JOVAN, a Verified Buyer from Niles,IL on June 01, 2025Had a car with misfire code. Wasn't ignition or mechanical. Fuel was old and varnished. Removed old fuel added fresh fuel and the Amsoil P.I. gasoline additive. After 20 minutes of idling reset the check engine light and have had no more misfires.Thanks David for recommendation.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
