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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.

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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, 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.

AMSOIL P.i.® Performance Improver Gasoline Additive

Warranty

Data Bulletin

SDS



AMSOIL P.i.® Performance Improver Gasoline Additive

  • 5 star rating
    A good clean up!
    By  MICHAEL,  a  Verified Buyer  from  Quebec Canada  on  May 09, 2024
    one a year to clean the injector, the best to restore power!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    For 3 vehicles
    By  VINNIN,  a  Verified Buyer  on  May 06, 2024
    I put this with every other fill up. Used for, HD, GMC Sierra and wife 2012 Honda CR V.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    peak performance
    By  Ernesto,  a  Verified Buyer  from  Southern Oregon  on  April 29, 2024
    This product is great. I've used a lot of others and this stuff seems to revive my wife's turbocharged lezbru/subaru better and longer. I use it at oil change and halfway thru oil change mileage. Thanks, good stuff. Keep innovating and I'll keep buying.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Every 3,000 miles
    By  EDWARD,  a  Verified Buyer  on  April 25, 2024
    This, along with Upper Cylinder Lube, brought my engine back to life. Snappy response to throttle, quiet, smooth idle. I'm Amsoil for life
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    My preferred fuel system cleaner
    By  BLAKE,  a  Verified Buyer  on  April 21, 2024
    If I'm going to put fuel system cleaner in the tank of any of my vehicles, I prefer AmsOil PI. It's just better.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great Results
    By  EDWARD,  a  Verified Buyer  on  April 15, 2024
    The first time I used the PI was along with my first Amsoil oil change, including Amsoil filter. My acceleration was more immediate and responsive. At a red light, I had to turn off radio and look at the tach, it was idling some smooth and quiet, I thought it stalled, but it didn't. I love the complete Amsoil line up and so does my 2020 KIA Sportage.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome stuff
    By  IAN,  a  Verified Buyer  from  Los Angeles   on  April 14, 2024
    I use every other oil change to keep everything clean. Loves this stuff.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    07 runs like new!!
    By  GEORGE,  a  Verified Buyer  from  Santa Rosa, CA  on  April 13, 2024
    One bottle every month at fill-up. Does it work?? 07 Grand Marquis Mercury runs like new. 184K miles with no complaints. Looking through the oil filler cap, everything looks clean as new.
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  • 5 star rating
    ⭐️⭐️⭐️⭐️🌟
    By  EDUARDO,  a  Verified Buyer  from  Sebring fl  on  April 10, 2024
    ⭐️⭐️⭐️⭐️⭐️
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  DUANE L.,  a  Verified Buyer  from  PA  on  April 09, 2024
    Helps with upper cylinder cleaning and fuel efficiency. Not sure exactly what the average mileage is raised but near 1 to 2 miles per gallon.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?