Customer Ratings & Reviews

THE DEALER WHO SERVED ME ONLY SENT ME 1 BOTTLE WHEN I ORDERED 2. I SENT A MESSAGE EXPLAINING THE SITUATION, BUT THEY SAID THAT THEY SENT 2, NOT ONE. I JUST GAVE UP, I WILL KEEP BUYING FROM AMSOIL ANYWAYS, JUST ONE BAD SERVICE EXPERIENCE. THAT'S WHY ONLY 4 STARS, BUT GOOD PRODUCT.

Bought this product for all my vehicles,only fuel treatment I've used were you actually notice a difference after running it through a vehicle. Even bought some for a friend and couldn't believe the difference it made in his truck.

Use the product once a month. Increases performance and mileage.

Like it very much

Seems to work and work great.

I put a bottle of this in at each oil change (5000 mile intervals). The engine still runs great and uses no oil.

Been using this product every 5,000 miles in my daily driver for years, along with Sig. series 0-30w since new. I recently changed the sparkplugs after 50k miles and found them burning extremely clean, after running cheap 87 pump grade octane for many years! It's worth the cost in my opinion, in order to keep my vehicle running at its best as long as I can. Mainly because I can't afford to buy anything new anymore, being retired from the workforce...

I combine this with the upper cylinder stuff every other oil change it keeps things clean & lubricated

Ive tried them all, Its li no other!

Awesome product

Product works very well and as described.

This gas additive works great in everything I put it in my boats jet skis cars trucks very good stuff

I purchased item to maintain performance of fuel system and fuel mileage. Install bottle every 4 thousand miles.

I run this on all the family vehicles every 5000 kms regardless. On our ‘17 explorer sport ecoboost we were having issues with rough idle and poor mileage. Ford wanted to clean the intake ( we have a catch can ) and change plugs etc. I got 3 of these and ran them back to back on fill ups ( all highway 110kms/hr ) combined with 94 octane fuel and after the 3rd tank it was night and day difference. No more irratic idle , we never seen better than 10L/100kms mileage and now we consistently get 7.8-8.7 L/100kms on the same trips. We do run the upper cylinder on every tank and the pi every 5000 kms now. Before amsoil we tried all sorts of competitor products and nothing made any noticeable change.

I have been using PI for several years in a 2001 Chevy Astro van, 1999 Chevy Blazer, and a 2000 Pontiac Firebird, ALL of them are still running with no problems. I now have a 2009, and a 2017 Chevy Traverse. I use PI in both. I have been getting a check engine light in the 2009 Traverse (has a newly rebuilt engine), the code indicates a possible emission system issue. I have used PI during this time, and the check engine light goes out. This is NOT a permanent fix...I have an appointment with my mechanic to verify the exact cause. But up to this point, I have not had any engine performance issues.

While this is in your tank it really dampens the performance but thats just because it's cleaning so dam well cuz soon as you fill a new tank once the pi has ran its course man you can really feel the difference I am super impressed

one a year to clean the injector, the best to restore power!

Increased gas mileage car runs smoother and quieter.

I put this with every other fill up. Used for, HD, GMC Sierra and wife 2012 Honda CR V.

This product is great. I've used a lot of others and this stuff seems to revive my wife's turbocharged lezbru/subaru better and longer. I use it at oil change and halfway thru oil change mileage. Thanks, good stuff. Keep innovating and I'll keep buying.