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P.i. Performance Improver Gasoline Additive

Product code : APICN-EA

Restores up to 14% horsepower1
Reduces need for costly higher-octane fuel
Reduces noise from carbon rap and pre-ignition
Controls pre-ignition "knock"
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 need for costly higher-octane fuel
Reduces noise from carbon rap and pre-ignition
Controls pre-ignition "knock"
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.

Warning - Click here for Proposition 65 information for this product

P.i. Performance Improver Gasoline Additive



Concentrated detergent aggressively cleans stubborn, power-robbing deposits from injectors, valves and the combustion chamber. Reduces emissions. Effective in port and direct injection systems. Bottle compatible with capless fuel systems. Cleans entire fuel system in one tank of gasoline.

See the Product Data Bulletin for full details.

REMOVES STUBBORN DEPOSITS TO RESTORE POWER AND PERFORMANCE

  • AMSOIL P.i. restores up to 14% horsepower in one tank of gasoline.1
Horsepower Comparison
  • Fights intake valve and combustion chamber deposits which helps restore power, control knock and reduce the need for higher-octane fuels.
  • Restores GDI fuel injectors up to a 100 percent flow rate.2

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.

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.

P.i. Performance Improver Gasoline Additive

G2543: A Study in Performance
Download the G2543: A Study in Performance


P.i. Performance Improver Gasoline Additive

  • 5
    Perfect product
    By  CECILIO,  a  Verified Buyer  from  Conyers   on  February 27, 2021

    Describe the issue

    I use this product with every oil change and my minivan has almost two hundred miles and the injectors are still as good as new and the minivan is still saving gas.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    PI Performance Improver
    By  MARK,  a  Verified Buyer  from  Michigan  on  February 24, 2021

    Describe the issue

    Used as recommended for many years in both GDI & non-GDI vehicles for 200K+ miles. No issues with fuel injectors or Intake valve buildup.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    By  DAVIDSON,  a  Verified Buyer  from  New Jersey   on  February 21, 2021

    Describe the issue

    Love it you really feel the difference
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Amazing power!
    By  PHILLIP,  a  Verified Buyer  from  Chicago  on  February 20, 2021

    Describe the issue

    Your car feel thank you using this product!
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    By  WARREN,  a  Verified Buyer  from  Boone, NC  on  February 19, 2021

    Describe the issue

    Great FI cleaner. Cleans combustion chambers and keeps your vehicle running new.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    By  MIKE,  a  Verified Buyer  from  9300 feet above sea level   on  February 19, 2021

    Describe the issue

    I use this in my 2013 2500 HD GMC and have had no fuel related problems in 160,000 miles.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Amsoil PI
    By  NICK,  a  Verified Buyer  from  San Mateo   on  February 18, 2021

    Describe the issue

    I am always a little apprehensive about performance claims on things you cannot physically see or test for. This product defies that... I decided to switch to Amsoil everything on our 2015 GMC Acadia and said what the heck I’ll try this out too. After using it once my 3-4 crank start ups went back to the factory fresh 1-1/2. Went on a family trip that usually uses 1-1/2 to 1-3/4 of a tank and this is where it got really good, went round trip on 1 tank!!! Highly recommended this, can’t say the frequency, but at least once a year. Good stuff!!!
    Bottom Line
    Yes, I would recommend this to a friend.
  • 4
    clean engine cylinders
    By  LARRY,  a  Verified Buyer  from  Osceola Iowa  on  February 18, 2021

    Describe the issue

    Haven't used this product long enough to give it a honest review, but if it is as good as the other Amsoil products then its a good product.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Fuel additive
    By  GARY,  a  Verified Buyer  from  Tennessee   on  February 15, 2021

    Describe the issue

    Love this product. Within a day can feel the improvement in power. Makes my Durango R/T roar.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    By  AARON,  a  Verified Buyer  on  February 15, 2021

    Describe the issue

    Bottom Line
    Yes, I would recommend this to a friend.