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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
    Gets out the stumbles
    By  Mysftail,  a  Verified Buyer  from  South Carolina  on  September 26, 2022
    I use the PI in my lawn maintenance vehicles when I forget to treat the gas b 4 I put them up for winter! Put it in the can and fill my tanks and everything smooths right out with the first tankful!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Really helped with a ruff running engine
    By  ROBERT,  a  Verified Buyer  from  28574  on  September 15, 2022
    I was having trouble with my truck running ruff so I tried this even though I don't normally use additaves. This was because I trust Amsoil. It worked great, I noticed the difference within 30 or 40 miles. I plan on adding this to my tank every oil change moving forward.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Makes a difference
    By  JOHN,  a  Verified Buyer  on  September 13, 2022
    My vehicles run smooth as new after 156,000 miles. But, I use Amsoil fluids and oils everywhere in my cars. I know my vehicles are protected.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amazing product!
    By  BALRAM,  a  Verified Buyer  from  Mississauga   on  September 12, 2022
    You have to use it to know what it is. I used it for 16 years on my Intrepid and ran it for 567 KM. without any service to the injectors. I would have run that car to million if it had not met with an accident.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Seems good
    By  ERIC,  a  Verified Buyer  on  September 11, 2022
    Just put in my gas tank, so not really able to comment yet
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  CORY,  a  Verified Buyer  from  Delaware   on  September 04, 2022
    I think is a good product definitely has my vehicle running a lot better
    Was this review helpful?
  • 5 star rating
    Worth every drop
    By  HUNTER,  a  Verified Buyer  from  Machias, ME  on  August 29, 2022
    My car’s 16 years old with almost 150k miles. I was averaging 20.5 ish mpg, i put a full bottle in my tank at fill up and after that tank I’ve been seeing 23-24mpg and my car runs incredible. Would HIGHLY recommend to anyone wanting to treat their car right.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Every third tank of gas!
    By  MILLARD,  a  Verified Buyer  from  80915  on  August 23, 2022
    Even though my vehicle takes 91 octane, this treatment improves my gas mileage.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    MPG AND POWERS BACK!
    By  Duck,  a  Verified Buyer  from  NC  on  August 23, 2022
    Man this restored the MPG and horsepower in my moms 2010 Camry LE 2.5! It’s made my BMW 428i get better mileage as well and in my other car, 2018 Camry SE, it’s better than the EFI additive they put in at the dealer when they do the service every 5k miles. Paired with the OE 0W-16 oil from AMSOIL as well, I’m getting almost 45 MPG in a petrol car! Amazing results in all my cars and the best fuel cleaner on the market.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amazing
    By  BRIAN,  a  Verified Buyer  from  Centerville IA  on  August 20, 2022
    Truck runs smoother and mpg’s have improved in the first use of this product!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?