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P.i. Performance Improver Gasoline Additive

Product code : APICN-EA

Restores up to 14% horsepower1
Reduces need for costly higher-octane fuel
Reduces noise from carbon rap and pre-ignition
Controls pre-ignition "knock"
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.

Restores up to 14% horsepower1
Reduces need for costly higher-octane fuel
Reduces noise from carbon rap and pre-ignition
Controls pre-ignition "knock"
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.

Warning - Click here for Proposition 65 information for this product

P.i. Performance Improver Gasoline Additive



P.i. Performance Improver Gasoline Additive

G2543: A Study in Performance
Download the G2543: A Study in Performance


P.i. Performance Improver Gasoline Additive

  • 5 star rating
    Cleaner
    By  DAVE,  a  Verified Buyer  from  Coatesville,Pa  on  May 18, 2022
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    Use P.I in all my machines, keeps fuel system clean, also keeps valve deposits to a minimum. Worth every penny.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome stuff
    By  DENNIS,  a  Verified Buyer  from  Texas  on  May 13, 2022
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    Engine loves it.
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  • 5 star rating
    Nice stuff
    By  Jason,  a  Verified Buyer  from  WI  on  May 09, 2022
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    Put it in my car and get a average of three miles per gallon more then if I don't add it
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    It’s a cleaner
    By  BRANDON,  a  Verified Buyer  on  May 07, 2022
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    So no way of tell on my personal vehicle of before and after use without scoping. But I would say it’s a good habit to use a good fuel treatment on occasion to help keep any carbon build up in check.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Once an oil change
    By  Gabe,  a  Verified Buyer  from  AL  on  May 04, 2022
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    Use this every oil change to keep your fuel system perfectly clean. What I've done with 5 vehicles. No fuel related problems in 100k-165k mi.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 2 star rating
    one bottle came open
    By  CVNT5,  a  Verified Buyer  from  Oregon   on  May 01, 2022
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    Bottle came half open and spilled product all over my other merchandise that i Bought
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Gas Additive
    By  FRANK,  a  Verified Buyer  from  USA  on  April 28, 2022
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    It's a must for all D.I. engines even with a catch can. I use it about every couple of months seems to work for me. I also use it on my motorcycle, not the whole bottle just what it calls for and no problem. Sure it costs but it works and that's a small price.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Smooth Idle
    By  NICHOLAS,  a  Verified Buyer  from  Brooklyn   on  April 26, 2022
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    Used it in my Toyota Highlander having 95,000 miles, it made a noticeable difference in the engine's idling making it idle smoother.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Keeps the eng clean
    By  WILLIAM,  a  Verified Buyer  from  Nj   on  April 25, 2022
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    Been using this product in all my vehicles never had an issue with any injectors I've logged over 100,000 miles in four different vehicles with this product with never a problem
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 3 star rating
    Gasoline Additive Review
    By  JIM,  a  Verified Buyer  from  California  on  April 25, 2022
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    Have not been able to detect any improvement. Possibly changes are so minimal that it is hard to notice a change. I am not saying that the product is defective but might need some test equipment to pick up a low-lying improvement.
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