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P.i. Performance Improver Gasoline Additive

Product code : APICN-EA

4.9 star rating
Read 631 reviews
Read 631 reviews
See all customer reviews

  • 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
Product Overview

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.

Technical Specification

P.i. Performance Improver Gasoline Additive

Warranty

Data Bulletin

SDS



Product Reviews

P.i. Performance Improver Gasoline Additive

4.9 star rating
Based on 631 reviews
Based on 631 reviews
See all customer reviews
  • 5 star rating
    Good Stuff
    By  Gary,  a  Verified Buyer  from  Georgia  on  June 07, 2023
    Put this in my 2011 Honda Odyssey, engine runs smoother and quieter.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Cleaning
    By  DANIEL,  a  Verified Buyer  on  June 02, 2023
    Car has 100k and runs smooth. Making sure the fuel system is clean and operating is important.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Top notch product excellent results worth the price
    By  LEONARD,  a  Verified Buyer  from  El Paso Texas   on  May 31, 2023
    I use this item religiously and put it in my cousins vehicles and wires .
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    This stuff is good.
    By  Bob,  a  Verified Buyer  from  Plum Island Ma  on  May 31, 2023
    So you want your injectors cleaned? This product is worth every penny. The injectors in my Mercruiser 7.4l were gumming up and I was told they needed replacement. I put two bottles of this stuff in and ran it in the water under load for about 15 minutes and all of a sudden, the boat is running like new. No issues after 10 hours.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Noticed a difference
    By  NEIL,  a  Verified Buyer  from  Durham NC   on  May 27, 2023
    I have a T-GDI vehicle and after using this product, I am noticing better acceleration and idling, albeit a very subtle change. Anything that can help clean injectors is a very good product. I will continue to use this product every 4000 miles as instructed in the directions for use.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Real Deal and New Go To
    By  Tim,  a  Verified Buyer  on  May 20, 2023
    I used this on my truck, car, bike and lawn tractor. It does what it says, all ran better and truck showed a slight mpg bump. Best part, works great with capless fuel systems!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great stuff
    By  BRIAN,  a  Verified Buyer  on  May 19, 2023
    Great stuff I use every oil change
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amazing stuff
    By  PHILIP,  a  Verified Buyer  on  May 17, 2023
    Helps keep your engine cleaned and running right!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    First time using this
    By  HENRY,  a  Verified Buyer  from  Orlando   on  May 12, 2023
    On the first tank I noticed a difference in the engine. It was very smooth and quiet. I will use it again
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    .
    By  ALFREDO,  a  Verified Buyer  on  May 12, 2023
    First time using this product so we will see.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?