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Customer Ratings & Reviews

AMSOIL P.i.® Performance Improver Gasoline Additive

Product code : APICN-EA

4.9 star rating Read 1,136 reviews

Customer Rating

4.9

91% would recommend

  • 5 1052
  • 4 47
  • 3 19
  • 2 9
  • 1 9

AMSOIL P.i.® Performance Improver Gasoline Additive

4.9 star rating Based on 1,136 reviews
  • 5 star rating
    Great fuel cleaner!
    By  GERMAN,  a  Verified Buyer  on  September 28, 2025
    I used it to clean my fuel line! It works great!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil and gas product
    By  ROBIN,  a  Verified Buyer  from  Knoxville   on  September 27, 2025
    Love your oil it’s nice to no you don’t have to worry about it when I use your oil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    Can't Hurt to Try It
    By  WILLIAM,  a  Verified Buyer  from  Paducah, KY  on  September 26, 2025
    I'm not a scientist, so I can't provide anyone with specifics. It seems to do a good job of keeping the engine internals clean. I use it at every oil change on my wife's car.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good
    By  MATT,  a  Verified Buyer  on  September 21, 2025
    Great additive every once in a while
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  GABRIEL,  a  Verified Buyer  on  September 19, 2025
    Put this in an empty tank then filled up and got easily 3 mpg more on the highway than usual. Great stuff 2018 Silverado 1500 4x4
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amazing Gas Additive
    By  RAFAEL B. ,  a  Verified Buyer  from  WinterHaven, FL   on  September 18, 2025
    Works as advertised. Notice the difference right away at my first oil change at 13,000 miles / 10% oil life on Monitoring system. Bought my charger at 4,000 miles. Twice before every oil change seems to do the job. I only use it as recommended per instructions.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent Product
    By  JAMES,  a  Verified Buyer  from  WA  on  September 17, 2025
    Everything that occurred in your video happened with my 2003 Ford Explorer Sport (301k miles) after one tankful of gas. Increased acceleration, smoother idling and increased MPG. I am extremely pleased with the results of the Amsoil P.I. especially after using many competitor's products with no results. Great job, Amsoil!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    PI seems to work
    By  DAVID,  a  Verified Buyer  from  Home  on  September 14, 2025
    PI seems to work cleaning the injectors.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    PI for the win!
    By  PETE,  a  Verified Buyer  from  NH  on  September 12, 2025
    Been using this product for more years than I can remember, yeah I'm old! Keep up the good work Amsoil!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    the good stuff
    By  Scott,  a  Verified Buyer  on  September 12, 2025
    Not that gas is bad as it use to be in the day but, it's still not perfect for todays injectors which clog way to easy. I've used this in honda's and ram's ..... I did notice improvement.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Tractor performance
    By  ROBERT,  a  Verified Buyer  on  September 11, 2025
    The Amsoil P i. Increases power and overall performance in my Husqvarna Kohler 20HP tractor. Also keeps the carburetor and intake cleaner.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Noticeable difference
    By  JAMESON,  a  Verified Buyer  from  Tennessee  on  September 11, 2025
    Noticed my engine started running like it should after using 👍👍
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil
    By  CHRIS,  a  Verified Buyer  on  September 08, 2025
    This thing works magic, stop waiting and test it today!
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  • 5 star rating
    Good stuff
    By  BRETT,  a  Verified Buyer  from  Eastern Connecticut   on  September 07, 2025
    Good product. I use every oil change. Highly recommend. Well worth the money
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    IT WORKS
    By  MICHAEL,  a  Verified Buyer  from  North Carolina   on  September 04, 2025
    I decided to try this on my 2016 Camry. After the road trip, it went from 393 miles till empty to 428 miles till empty. It obviously cleaned something out. I’ll keep my eye on the “miles to empty” to see how long it lasts.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I Felt the difference
    By  PAUL,  a  Verified Buyer  on  September 03, 2025
    I thought I would give this a try to help keep my injectors clean. After only the first one hundred miles of use I could feel an improvement in performance. Nothing noticeable in improved MPG. I will definitely use this again after the recommended four thousand miles
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Outstanding
    By  DaveP,  a  Verified Buyer  from  Florida  on  September 01, 2025
    Been using this for 20 yrs, 6 cars, all over 200kmiles before selling them, never had to replace a fuel injector.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great fuel system cleaner
    By  GARY,  a  Verified Buyer  from  Benicia Ca  on  August 28, 2025
    This gasoline additive always gives my cars a slight boost in performance right after using it. You can feel it working. Another quality product made by Amsoil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    This stuff is great!
    By  ALEX,  a  Verified Buyer  on  August 24, 2025
    Cleans out the crud left from the gasoline additives.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Periodic Fuel Enhancer
    By  MARK A.,  a  Verified Buyer  from  WA  on  August 22, 2025
    Use Pi in all my cars as well as my kids and grandkids when I do other servicing for them. Helps with keeping the fuel system healthy.
    Bottom Line
    Yes, I would recommend this to a friend.
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