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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.

Warning - Click here for Proposition 65 information for this product

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
    Excellent product
    By  DERRICK,  a  Verified Buyer  on  February 28, 2024
    Great product. I have been using it for years!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The best
    By  STEPHEN,  a  Verified Buyer  on  February 23, 2024
    This is the best on the market.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Definitely recommend
    By  DOUG,  a  Verified Buyer  from  Florence Ky  on  February 18, 2024
    Awesome product used in my truck and could tell a difference
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil P.I. Performance improver gas additive
    By  JIM,  a  Verified Buyer  from  Washington  on  February 10, 2024
    I use this all thru the year in my colorado and wife's equinox.We actually see an improvement in gas mileage and performance!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  STEVEN,  a  Verified Buyer  from  Massachusetts   on  February 10, 2024
    Grateful lubricating all your engine parts and fuel line and stuff like that
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    changed my gas mileage
    By  GREG L,  a  Verified Buyer  from  Colorado  on  February 08, 2024
    This product is really great at cleaning out my fuel system. IT improves performance and mileage better than any other product I have used.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Gasoline Additives
    By  EARL,  a  Verified Buyer  from  PA  on  February 05, 2024
    I have been purchasing the Performance Improver Gasoline Additive and Upper Cylinder Lubricant Additive since last year. The ordering process is simple, shipping is rather fast and most importantly the products work. I have noticed improved fuel mileage and a smooth running engine. Amsoil offers many other quality products as well. I do not have any other needs at this time because of warranty service provided on my car.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    great product
    By  Joe,  a  Verified Buyer  from  FL  on  February 05, 2024
    I use Amsoil oil in everything i own i used this additive in my 99 ram with the 5.9 gas engine and it did seam to improve the engines mileage
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Good product
    By  JOEY JOSE,  a  Verified Buyer  from  San Leandro California  on  February 05, 2024
    You can notice the inprovement
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 1 star rating
    Not worth it
    By  JOHN,  a  Verified Buyer  on  February 03, 2024
    Never noticed 1 iota of difference in the running of our Colorado.
    Bottom Line
    No, I would not recommend this to a friend.
    Was this review helpful?