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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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Happy customerBy MARK, a Verified Buyer from PA on April 22, 2025I just started using this in my tacoma it's a 4 cylinder I have to tell you the performance is impressive it says it's good for 4000 miles im on my 2nd tank of gas and my gas mileage improved but the performance is awesome 👌Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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P I injection cleanerBy JEFF, a Verified Buyer from Fort Erie Ontario Canada on April 18, 2025Keeps my gdi motor running like new seeBottom LineYes, I would recommend this to a friend.Was this review helpful?
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I’ve used this on 3 vehicles I guess it works.By BENET, a Verified Buyer on April 16, 2025I’ve used this on different vehicles I’ve never had a problem with all it says it does. The gas mileage always stayed up.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Not just for fuelBy ROBERT, a Verified Buyer from Gas tank on April 15, 2025This product cleans the entire fuel system. It is definitely noticeable. Even my cars idle is smoother. I highly recommend this product every 4,000 miles as directed 👍Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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It puts the pep back in your vehicles stepBy MIKE, a Verified Buyer from Pine Mountain, Ga on April 15, 2025Used in my Tahoe the day we left on vacation to the Tennessee Mountains, when we did leave I could noticeably tell a difference in performance and throttle response. At the pumps I was averaging a 1-2mpg gain. With that I would highly recommend.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Phantasmal - DebunkedBy X, a Verified Buyer from AK on April 13, 2025Well, I've tried just about all of the fuel (Non $3 special Lucas upper ring lubricant additives), aka $$$, and have meager results for the money that was paid. Tried Lucas (Various), Liqui-Moly Fuel Treatment, VP Racing, Chev Techron, Marvel MO (Need to Test More), and Royal P. Only one that made a difference for more than 1 week was MMO, well, until I found this from Amsoil. Not only has this improved my fuel economy, my engines purrs with the injectors being as clean as this got them. Suuuper smooth, restored a lot of lost HP and TQ. I love Amsoil!!!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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worksBy RUSS, a Verified Buyer on April 10, 2025Just started using, car has low miles. Haven't notice any big changes yet, seriously doubt I gained HP, but? Use with Upper Cylinder Lube. As long as it keeps inside clean it will be well worth it.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Gasoline additiveBy ED, a Verified Buyer from Texas on April 09, 2025After adding and driving a few miles, I noticed my engine went to 4 cyl operation and stayed there for quite a while. The engine seems more responsive and continues to run on 4 cylinder operation more frequently than in the past - better milage.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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AwesomeBy ANTHONY, a Verified Buyer on April 08, 2025With product added to my vehicle I’m getting better than manufacturers stated mileage per gallon.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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GreatBy CHRISTOPHER, a Verified Buyer from Louisiana on April 07, 2025I use every 3 tanksBottom LineYes, I would recommend this to a friend.Was this review helpful?
