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AMSOIL P.i.® Performance Improver Gasoline Additive

Product code : APICN-EA

4.9 star rating Read 867 reviews

Customer Rating

4.9

89% would recommend

  • 5 792
  • 4 43
  • 3 17
  • 2 9
  • 1 6

AMSOIL P.i.® Performance Improver Gasoline Additive

4.9 star rating Based on 867 reviews
  • 5 star rating
    Best of the best
    By  GAURAV,  a  Verified Buyer  from  Canada  on  February 11, 2025
    i have used Red Line and Amsoil Pi for my Mazda 3 and Amsoil Pi came on the top. Excellent product highly recommended little expensive to get in Canada but worth every penny.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Makes a great gift
    By  SCOTT,  a  Verified Buyer  on  February 07, 2025
    Been using it for a while and it works great been consistently getting better results with it used as recommended super fast shipping and easy to use
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Works as advertised
    By  DAVID,  a  Verified Buyer  from  Colorado   on  February 05, 2025
    Works well. Keeps the fuel system clean.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  JAMES,  a  Verified Buyer  from  Kirwin, ks  on  February 04, 2025
    Used it, very impressed
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great products
    By  MICHAEL,  a  Verified Buyer  from  Iowa  on  January 29, 2025
    I have been using this is my 1/2 ton farm truck and wife's 16 Tahoe. It really cleans and have noticed it neutralizing the fuel. My fuel trims and changed and a big notice in my alcohol content is way better. I have also noticed we do not have to complete intake cleanings near as often. Helping with carbon build up. We have noticed a slightly better fuel milage. This has slowed the demand for "fuel tank evap as well". Again, THANK YOU AMSOIL.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Most trusted name in automotive lubricants
    By  MICHAEL,  a  Verified Buyer  from  Oklahoma  on  January 26, 2025
    Love all the Amsoil products
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Superior product
    By  PG,  a  Verified Buyer  from  San Antonio  on  January 26, 2025
    I've used PI for almost a decade now and as far as I'm concerned, its one of the best products AMSOIL makes. While I use it with my cars - and if you start using it early in a car's life, it's going to help keep it from having fuel injector problems - I also use it with small engines. I have a 30AMP generator that wouldn't start at all. I had used fuel with ethanol in it before I became aware that could cause issues. After multiple attempts to start the thing, including using Power Foam in the carburetor, no dice. I figured I'd have to take it to a shop for repairs, but I decided to put in PI with some ethanol free gas and amazingly, that generator cranked up. Shut it off and started it again the next day, no problems starting. Put a half bottle of PI in there with non-ethanol gas and it ran until it was out of fuel. That was 7 years ago, and that generator hasn't given me an ounce of problems starting/running since, including during the Texas deep freeze of 2021 when we lost power for 3 days in sub-20 degree weather. It ran for ~ 55 hours pretty much nonstop. Not going to say PI is magic or a cure for bad maintenance/operation but it worked for me.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Product
    By  DION,  a  Verified Buyer  on  January 21, 2025
    Great product running it in all of my vehicles. Noticed a big difference in the performance of my vehicles. Used to use a different product, now I'm team Amsoil for sure.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Happy with purchase
    By  RICHARD,  a  Verified Buyer  from  Texas  on  January 18, 2025
    I can see a difference after using
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    It works !
    By  KEVIN,  a  Verified Buyer  from  NH  on  January 11, 2025
    I’ve been using Performance Improver for years, currently my 22’ Toyota & 2013 Honda. Improves gas mileage & gives you an engine boost.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  ANDRES,  a  Verified Buyer  from  Toronto   on  January 11, 2025
    I have using it for a while , it does the job
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Definitely worth the money
    By  Bill,  a  Verified Buyer  on  January 09, 2025
    Fuel Mileage increase is noticeable. Lasts a few tanks after.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good stuff
    By  JOHN,  a  Verified Buyer  from  New Jersey  on  January 08, 2025
    I always use this on my last empty tank 20 gal fill-up before changing my 2013 Silverado 6.0 gasser's oil. I also use it along with the Upper Cylinder Lubricant too at the same time with good results. I definitely notice my truck running smoother for a pretty good long while afterwards. Give it a shot!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Noticeable performance improvement
    By  TOBY,  a  Verified Buyer  on  January 07, 2025
    As the product cleans during the tank of gas usage, gradual improvement in performance is noted and definitely is noticeable after running the entire tank of additive containing fuel through. I haven't calculated the actual mpg increase, but it has definitely helped.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The good stuff!
    By  KYLE,  a  Verified Buyer  from  Thunder Bay, Ontario Canada   on  January 06, 2025
    Great value for a product that works as advertised.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Performance improver gas additive
    By  MELVIN,  a  Verified Buyer  from  Alberta   on  January 05, 2025
    Car runs 100% better starts instantly in cold weather improved mileage
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    2013 Corolla
    By  MICHAEL,  a  Verified Buyer  on  January 04, 2025
    I couldn't believe how quickly I noticed a difference in performance in less than 100 miles smoother,stronger on a 160k plus Corolla
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Review Gasoline Additive
    By  EARL,  a  Verified Buyer  from  PA  on  January 02, 2025
    The AMSOIL Performance Improver Gasoline Additive has improved my gas mileage and keeps the engine running smooth. I use that in between using the Upper Engine Lubricant. I would recommend these products for any vehicle.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 3 star rating
    Didn’t notice any difference.
    By  JAMES,  a  Verified Buyer  from  Oregon   on  January 01, 2025
    Bought a 12 pack, started adding 1 every fill up, checked mileage before and after, maybe 1/2 mile per gallon better. For the cost per bottle, doesn’t justify 1/2 mile per gallon. Sorry….
    Bottom Line
    No, I would not recommend this to a friend.
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  • 5 star rating
    Dose wonderse
    By  MATTHEW,  a  Verified Buyer  from  Brantford Ontario Canada  on  December 30, 2024
    Dose a great job for cleaning out an engine that has carbon build up problems. Helps with fuel economy a lot also.
    Bottom Line
    Yes, I would recommend this to a friend.
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