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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
WARRANTY
Data Bulletin
SDS
AMSOIL P.i.® Performance Improver Gasoline Additive
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I use it after every oil changeBy LIIBAN, a Verified Buyer from Madera, CA on March 24, 2025I use it after every oil change. Works great.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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AllBy ARIC, a Verified Buyer on March 23, 2025I have used Amsoil products for over 20 yrs now. All my boats, cars, trucks, snowmobiles, lawn equipment, if it uses oil and I own it it will have Amsoil. As long as this company continues to outperform in product perfomance and customer services I will continue to be a dedicated customer. 5 stars! And to think I got nothing to write this review Good job Amsoil! keep it going!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Used regularly in my gas enginesBy GIOVANNI, a Verified Buyer from BadLands Alberta on March 23, 2025I add product annually. I noticed a good improvement in performance and fuel economy immediately.Bottom LineNo, I would not recommend this to a friend.Was this review helpful?
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Love it!By JEFFREY, a Verified Buyer on March 22, 2025Love this product, started using at every pil change. Smoother idea and improved gas mileage.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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It works!By THOMAS, a Verified Buyer from Denver on March 21, 2025This stuff helps keep up maintenance on your vehicle and just adds that extra step of preventative maintenance. I had a gummed up injector and this stuff cleaned it up right away.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Good stuffBy DAVE, a Verified Buyer from Illinois on March 18, 2025I got it because i liked what Alex at LSC said. Didnt effect my car to much, but it is newer. My wifes however, it improved nicelyBottom LineYes, I would recommend this to a friend.Was this review helpful?
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Pi performance improverBy JASON, a Verified Buyer on March 16, 2025Better fuel economy after usingBottom LineYes, I would recommend this to a friend.Was this review helpful?
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Great for routine maintenanceBy KIRK, a Verified Buyer from ME on March 16, 2025I use Amsoil PI in my Direct Injected Subaru Crosstrek as well as my Mitsubishi Mirage and 3/4 ton Chevrolet (which don't have direct injection). It seems to be doing a good job of keeping my fuel injectors clean/ engines running efficiently. Upkeep is key and so I've been using this on my vehicles since they were new. Idling and throttle response are good with all engines.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Performance emproverBy JOHN, a Verified Buyer on March 15, 2025I use this on every oil change along with the upper seller lubricant keeps car running tipped up if it works don't change itBottom LineYes, I would recommend this to a friend.Was this review helpful?
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PI fuel system cleanerBy BURTON, a Verified Buyer from Az. on March 10, 2025Throw a bottle of this in the tank the Next time you fuel up. Incredible fuel system cleaner !Bottom LineYes, I would recommend this to a friend.Was this review helpful?