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P.i. Performance Improver Gasoline Additive

Product code : APICN-EA

  • Restores up to 14% horsepower1
  • Reduces 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.
  • Restores up to 14% horsepower1
  • Reduces 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.
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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, E85 or 2-stroke mixed fuel.

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

Horsepower Comparison

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.

See the Product Data Bulletin for full details.

P.i. Performance Improver Gasoline Additive



P.i. Performance Improver Gasoline Additive

  • 5 star rating
    Good stuff.
    By  MICHAEL,  a  Verified Buyer  from  Minnesota   on  July 01, 2022
    2016 f150. Truck runs smoother. Amsoil just make the best. All I can ask is that my truck keeps going, and Amsoil makes sure it does.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The stuff works
    By  CHRIS,  a  Verified Buyer  from  New York  on  June 28, 2022
    Been using this product for the last couple of years in intervals of every 5k to 7500 miles on my car and I always see small increase in fuel mileage and I can feel the engine run a little smoother after every bottle. Cheap way to maintain the engine.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 4 star rating
    Highly recommend
    By  RAMSEY,  a  Verified Buyer  from  Turner  on  June 26, 2022
    Used this on a road trip at the first fill up and got even more mpg’s.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    fuel injection cleaner
    By  DALE,  a  Verified Buyer  from  NC  on  June 26, 2022
    Helped clean the injectors and get better gas mileage.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    INcreased milage in my truck
    By  MattyV,  a  Verified Buyer  from  Minnesota  on  June 23, 2022
    I added this to my last fill-up and noticed an extra 1.5 miles to the gallon over the previous tank. Reduced some clicking noises from the top end of the engine I noticed as well.
    Was this review helpful?
  • 5 star rating
    Best fuel additive
    By  ERIK,  a  Verified Buyer  from  NORTH CAROLINA  on  June 16, 2022
    I've been using PI in all my vehicles for easily 7 years won't use anything else!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Cleans well
    By  PATRIC,  a  Verified Buyer  on  June 10, 2022
    Cleaned up my injectors. This has improved my Subaru fuel mileage. We went from 22mpg average to 25!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Once a year
    By  JEFF,  a  Verified Buyer  from  Chicago's northwest burbs   on  June 10, 2022
    I add a bottle once a year at oil change time
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil PI
    By  TOM,  a  Verified Buyer  on  June 07, 2022
    I put a bottle in the tank at every oil change to help keep the fuel system clean.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Better mileage
    By  DAVID,  a  Verified Buyer  on  June 06, 2022
    I have never used a product for cleaning fuel injectors that actually increased my fuel mileage until I used this. This will be what I use from now on.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?