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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.

  • 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.

Warning - Click here for Proposition 65 information for this product

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

SDS

Warranty

Data Bulletin



P.i. Performance Improver Gasoline Additive

  • 5 star rating
    great stuff!!!!
    By  michael,  a  Verified Buyer  from  OK  on  November 28, 2022
    I use this a couple of times a year after an oil change, seems to put the pep back in the step!!!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Runs smoother & stronger
    By  KENT,  a  Verified Buyer  from  Morgan Hill  on  November 26, 2022
    Mustang GT running a little rough. Ran treatment and it smooooothed out and runs stronger.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Performance Improver gasoline additive
    By  LONALD,  a  Verified Buyer  from  Tomball, Texas  on  November 15, 2022
    I have been using PI for several years in both of my Corvette ZO6s. It eliminates carbon buildup and helps the engine run smoother with regular usage. I use only Top Tier gasoline. It is very noticeable if I run out and don't add PI every third or fourth tank of gas...I have a 2006 and a 2015...both cars react similarly to the additive. Plus, both get a little better gas mileage, too! I will not run them without using PI regularly...very satisfied customer.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Increased milage
    By  MATTHEW,  a  Verified Buyer  from  Minnesota  on  November 07, 2022
    I notice about 1.5 to 3 MPG increase for 3 to 4 tanks after using this additive.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Preventive maintenance
    By  PAUL,  a  Verified Buyer  from  CT  on  November 01, 2022
    I used this in my truck which runs great. I used this mostly as a preventive maintenance item. I did not see any improvement in performance but I will definitely use again
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Keeping it Clean
    By  Mark,  a  Verified Buyer  from  WA  on  October 31, 2022
    Always is good to know the fuel injectors get some cleaning when this is in the tank.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 4 star rating
    Great additive
    By  REG,  a  Verified Buyer  from  BC  on  October 29, 2022
    Use this in our Camry LE every 2000 miles or so Increases mpg and engine runs smoother
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    WHAT ARE YOU WAITING FOR?
    By  BAD2DABONE,  a  Verified Buyer  from  ON THE HIGHWAY  on  October 24, 2022
    HAD A ROUGH IDLE AND HESITATION PULLING AWAY FROM A STOP AND DECIDED TO PUT SPECIAL JUICE FROM AMSOIL IN GAS TANK! CLEARED EVERYTHING UP AND NO PROBLEM NOW! IT MUST HAVE CLEANED UP SOME CARBON BUILD-UP SOMEWHERE IN THE FUEL SYSTEM!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 4 star rating
    Tried it on a whim
    By  BURT,  a  Verified Buyer  from  Lancaster, PA  on  October 22, 2022
    Tried this product on a whim and it worked great! Enough so that I purchased multiple bottles of it again.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Performance improver
    By  BRIAN,  a  Verified Buyer  from  Rio Rancho   on  October 10, 2022
    I could tell the difference on the first bottle excellent product highly recommended
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?