Skip to Main Content
Shop by Vehicle

Customer Ratings & Reviews

Customer Rating

4.9

91% would recommend

  • 5 1118
  • 4 49
  • 3 19
  • 2 9
  • 1 9

AMSOIL P.i.® Performance Improver Gasoline Additive

Product code : APICN-EA

4.9 star rating Read 1,204 reviews
Current price:

$18.99

Retail Price
Columbus - 43215
View Package Sizes

AMSOIL P.i.® Performance Improver Gasoline Additive

4.9 star rating Based on 1,204 reviews
  • 5 star rating
    Pleased customer
    By  DALE,  a  Verified Buyer  from  Ohio   on  October 07, 2026
    I try to use this at least once every 5,000 miles to keep things clean. It seems to work better than other products I've used so I will be sticking with PI.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    You can feel the power
    By  CHRIS,  a  Verified Buyer  from  Merritt Island FLorida  on  October 05, 2026
    Amsoil IP really does help improve fuel efficiency. I can always feel the power increase once i use a bottle in a tank of gas.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great for mpg
    By  EDWARD,  a  Verified Buyer  on  October 04, 2026
    Amazing product. I use this every oil change.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Gas Additive
    By  STEPHEN,  a  Verified Buyer  from  Scarborough   on  October 04, 2026
    Great product -
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Gas additive
    By  joebudwiser,  a  Verified Buyer  from  VA  on  October 03, 2026
    GOOD STUFF
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Very good product
    By  EARL,  a  Verified Buyer  from  Macungie, PA  on  September 29, 2026
    I put this treatment in my cars tank about 5 or 6 times a year. The engine runs really well and gas mileage has improved over time. The only small problem to me is the plastic seal under the cap. It can be tough to remove.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    PI fuel injection cleaner
    By  DON,  a  Verified Buyer  on  September 28, 2026
    Good product motor runs smooth… if running on long highway travels… it’s helps the cleaner circulate through better..
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil
    By  PETE,  a  Verified Buyer  from  Minnesota   on  September 26, 2026
    Been using for years, best oil on the market. Highly recommend !
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Muy bueno
    By  JONATAK,  a  Verified Buyer  on  September 23, 2026
    Es un producto muy bueno
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Strong cleaner
    By  WILLIAM,  a  Verified Buyer  from  AZ  on  September 22, 2026
    I have a 2022 BMW with 20,000 miles. I've been noticing the engine has a little stumble now and then at idle at a stop light. I put a whole bottle of this injector cleaner in with a full tank of gas. By the time I'd used a half of a tank of gas the engine idles so smooth that I can't even tell if it's running or not. I look at the tachometer and it's idling very nicely and smooth. This stuff works !!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 4 star rating
    Good to use regularly.
    By  JON,  a  Verified Buyer  on  September 21, 2026
    Use it regularly and get Atleast a ten percent gain.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Cleaner
    By  KARL,  a  Verified Buyer  from  Pennsylvania   on  September 20, 2026
    Works great
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Improved gas mileage
    By  ELLIOTT,  a  Verified Buyer  from  SC  on  September 19, 2026
    This product improved my gas mileage and helped my 240k miles lexus gx470 run smoother!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    A couple times a year
    By  FREDERICK,  a  Verified Buyer  from  WA  on  September 17, 2026
    I use this in my wife's car. It has gotten to the point where she actually notices the difference when it is in her tank. Another great product from amsoil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    It works good
    By  RAVI,  a  Verified Buyer  on  September 10, 2026
    I love it!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Cleaner
    By  KARL,  a  Verified Buyer  from  Pennsylvania   on  September 07, 2026
    Works
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Fuel cleaning
    By  STEVEN,  a  Verified Buyer  on  September 07, 2026
    Best inj cleaner hands down
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product, great results, great price
    By  DES,  a  Verified Buyer  on  September 06, 2026
    I only recently became aware of this Amsoil fuel system additive through Rainman Ray. This cleaner produces great results. I definitely will buy again and again.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Fuel injector fuel system cleaner
    By  JOSHUA,  a  Verified Buyer  from  Oklahoma  on  September 05, 2026
    Slight improvements with idling and mpg's.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Good stuff but expensive
    By  WES,  a  Verified Buyer  from  Colorado   on  September 04, 2026
    The amsoil gas treatment seems to work well. The only downside is the cost.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?