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AMSOIL P.i.® Performance Improver Gasoline Additive

Product code : APICN-EA

4.9 star rating Read 1,144 reviews

Customer Rating

4.9

91% would recommend

  • 5 1060
  • 4 47
  • 3 19
  • 2 9
  • 1 9

AMSOIL P.i.® Performance Improver Gasoline Additive

4.9 star rating Based on 1,144 reviews
  • 5 star rating
    Fuel injector cleaner
    By  JIM,  a  Verified Buyer  from  Ohio  on  February 14, 2026
    Awesome product . Will continue to use
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I hope it works!!
    By  BRYAN,  a  Verified Buyer  from  Round lake IL  on  February 14, 2026
    I bougth a case for 3 cars and hoping it works. Also I hope on my next purchase you guys have military discount. Thanks
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Definitely buying more
    By  ETHAN,  a  Verified Buyer  from  Bozeman MT  on  February 09, 2026
    Can definitely tell a difference from my idle after going through a few tanks of gas way smoother than before
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    PI
    By  RONALD,  a  Verified Buyer  from  TX  on  February 08, 2026
    Awesome
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Long ride.
    By  TRACY,  a  Verified Buyer  from  WY  on  February 07, 2026
    I used it in my Van and it seems to work better than not having it at all.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    added protection
    By  BEN,  a  Verified Buyer  from  ohio  on  February 07, 2026
    I use P.I. every 3 months on our vehicles just to help keep injectors running smoothly and clean. we have had no issues so it must be helping. its a small price for some added protection that can't hurt.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Quality
    By  TIMOTHY,  a  Verified Buyer  on  February 06, 2026
    Great product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Key additive in the maintenance regimen for my truck
    By  SCOTT,  a  Verified Buyer  from  IN  on  February 05, 2026
    This product is a part of the maintenance regimen for my truck. After 75000 miles, my truck's power and gas mileage has remained consuistent.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    2020 chevrolet silverado
    By  BRUCE,  a  Verified Buyer  from  NY  on  February 05, 2026
    Product really works. Purchase a 2020 chevy silverado 2 month ago very low miles runs good added the p.i. and I see the difference right away love it really works
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Feel The Difference
    By  NJC,  a  Verified Buyer  from  OH/PA Border  on  February 05, 2026
    I’m cautious about snake oil in a bottle. However, I’m very impressed with this. Started using it in Allis-Chalmers Antique Tractor, we pull with . Out of the hole, the engine is snappier . And in the light class, I’m able to pull a gear higher. Rarely power out. Just started using it in my ‘18 CT6 Cadillac. These are noted for a problematic 8 speed automatic. Not sure how it’s related, but it’s shifting smoother between gears. Not sure on the MPG improvement yet?
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil gas additive
    By  JACKY,  a  Verified Buyer  from  Louisiana   on  February 04, 2026
    Part of my oil change regiment, when the oil gets changed this gets put in my gas tank. 100% trust any thing amsoil puts there name on !!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The Best Fuel Injector Cleaner
    By  PERRY,  a  Verified Buyer  from  Calgary, Alberta  on  February 04, 2026
    I have had excellent results with this product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Very good additive.
    By  RAYMOND,  a  Verified Buyer  from  Cape May NJ  on  February 04, 2026
    I have been using PI for a long time. We have three vehicles that I maintain. I believe it makes a real difference. I recommend PI.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product but beware!
    By  Ron,  a  Verified Buyer  on  January 28, 2026
    Beware of shady business practices. The product is great but I felt scammed by the business. I ordered a 2 pack and paid $34.88 (about $17 bottle). I later receive and invoice for $20.00 more. When asked, a rep said $20 was for shipping. My total for 2 bottles becomes $54.88. I know pairs about $27 per bottle. Who would pay that much? I felt like they charged me the normal price and after I received the product they sneak in an extra bill. Use caution because I don’t know if they add another charge to your order way after the fact. If they were upfront about the total cost I would have been able to make a better decision on my purchase. Instead, I feel scammed, ripped off, conned, etc.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    PI performance additive!!
    By  JOEL,  a  Verified Buyer  from  Greenfield,In  on  January 28, 2026
    Have been a Amsoil customer for years, just purchased a new Mazda CX-5 with DPI fuel system just wanted to start the car off with some preventative maintenance A++
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil P.i. Gasoline
    By  JOHN,  a  Verified Buyer  from  OH  on  January 24, 2026
    I used a bottle of amsoil gasoline in my GMC sierra, and my wife's Buick lacrosse. Ran the tanks until almost empty. I couldn't tell a difference until I refilled the tanks. Let me tell you, all I can say is WOW! They both idled better and definitely had more power! I will be buying more! I highly recommend Amsoil gasoline treatment!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil PI
    By  STEVE,  a  Verified Buyer  from  Georgia  on  January 22, 2026
    This product did the job! I’ve tried many fuel additives and they’ve never worked. This product cleaned my injectors on the second use!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    A serious performer
    By  MICHAEL,  a  Verified Buyer  from  San Antonio, TX  on  January 21, 2026
    Amsoil P.I. helps keep your injectors clean, and your engine running smooth! Good stuff!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Très bon produit
    By  PASCAL,  a  Verified Buyer  on  January 19, 2026
    Super produit je l’adore 😎
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil PI Performance Improver Gas Additive
    By  JERRY,  a  Verified Buyer  from  Texas  on  January 18, 2026
    This gas treatment is the best in the market I use it 4 different vehicles see the change in more power and more gas mileage i put in my vehicles every 5000 miles
    Bottom Line
    Yes, I would recommend this to a friend.
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