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Customer Ratings & Reviews

AMSOIL P.i.® Performance Improver Gasoline Additive

Product code : APICN-EA

4.9 star rating Read 1,153 reviews

Customer Rating

4.9

91% would recommend

  • 5 1069
  • 4 47
  • 3 19
  • 2 9
  • 1 9

AMSOIL P.i.® Performance Improver Gasoline Additive

4.9 star rating Based on 1,153 reviews
  • 5 star rating
    Good stuff
    By  RONALD,  a  Verified Buyer  from  TX  on  January 03, 2026
    Good stuff
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Fuel additive
    By  GEARY,  a  Verified Buyer  from  Noble  on  January 02, 2026
    It was a notch above all the rest on the reviews they don't go cheap on chemicals they give you the best
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Pleased
    By  AL,  a  Verified Buyer  on  December 30, 2025
    Good stuff
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amazing product!
    By  ERIC,  a  Verified Buyer  from  Post Falls, ID  on  December 29, 2025
    2019 F150 3.5l Ecoboost with 115,000 miles on it. Never ran a fuel additive through this truck until I tried this. Absolutely amazing. I ran two bottles through one 36 gallon fuel tank and the difference was stunning. Didn't think the truck ran poorly before, but the difference this PI made was unbelievable. Engine stopped having a rough idle, sounds way better, and improved efficiency. I highly recommend!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great for Tacoma
    By  RYAN,  a  Verified Buyer  on  December 29, 2025
    Worked great. Added to gas tank and let it do its stuff. Rough start went away.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Smoother Engine Guaranteed
    By  RICK,  a  Verified Buyer  on  December 28, 2025
    Anytime one of my vehicles feels a little sluggish, I order PI because I know my car or motorcycle will run so much better. I've been using PI for years and can feel the difference it makes.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good cleaner
    By  TODD,  a  Verified Buyer  on  December 28, 2025
    Product has never let me down. Always see improvements after using the product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Gives a smooth idle really
    By  Lincoln ,  a  Verified Buyer  from  Florida  on  December 27, 2025
    Gave it a smooth idle a nice pedal feel almost like the truck could breathe a little better
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Works as advertised
    By  ANDREW,  a  Verified Buyer  from  Abbotsford bc  on  December 26, 2025
    Works great started running this while ago ever so often in a full tank
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Gasoline performance Improver
    By  DENNIS,  a  Verified Buyer  from  Nassau County Ny  on  December 26, 2025
    I have experienced improvements in performance & fuel mileage.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Does waht it promises
    By  Andy,  a  Verified Buyer  from  Northern VA  on  December 22, 2025
    Nice way to make sure my engines are operating at their best.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Surprising good results
    By  DAVID,  a  Verified Buyer  from  South Carolina  on  December 21, 2025
    Unlike other additives, this one really makes a difference. Another running engine, little better gas mileage and more power.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  BRIAN,  a  Verified Buyer  from  Deatsville Al  on  December 18, 2025
    Added this to all my vehicles smooths out any rough spots and cleans
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Gasoline additive.
    By  CURT,  a  Verified Buyer  from  Cary  on  December 17, 2025
    Amsoil PI stopped sluggish cold starts. Great product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Fuel additive
    By  RAFAEL,  a  Verified Buyer  on  December 07, 2025
    So good on fuel and clean injectors.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    PI Performance
    By  GREG THE GREEK,  a  Verified Buyer  from  OAK RIDGE TN  on  December 05, 2025
    This product is great for all power equipment and great for your gas engine, so far when I add it to a full tank I get better mileage. I can’t check my spark plugs because they are underneath the intake manifold. I’m sure it’s most likely cleaning those intake valves! I even use it in my JD mower, it keeps the plugs clean!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent product
    By  ROBERT,  a  Verified Buyer  from  TX  on  December 05, 2025
    Good product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Clean
    By  STAN,  a  Verified Buyer  from  Florida  on  December 04, 2025
    This is great for your vehicle and will help it run great all of the time!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Clean clean
    By  DAVID M,  a  Verified Buyer  on  November 30, 2025
    Keeping my injectors clean
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I trust the name
    By  MICHAEL,  a  Verified Buyer  from  OK  on  November 30, 2025
    If Im going to use a gas additive, its going to be this one
    Bottom Line
    Yes, I would recommend this to a friend.
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