Customer Ratings & Reviews

It did seem to improve the performance.

Love it. Helps aid in the performance of my vehicles. Use it in the fall and winter the most.

I put in my ram 2500 diesel every month for cleaning maintenance on fuel systems, and helps with fuel maintenance.

Great product used it on a 2006 nissan murano se awd made it feel like a brand new vehicle again

Works as advertised

BEEN USING AMSOIL SINCE MY TRUCK WAS NEW pulling my race car 100,000 miles. this last trip without my race car I got 22mph at 90 miles per hr. I need more

I use P.i. Performance Improver Gasoline Additive 2-3 times a year. When you first added in and fill your tank up(mine is a truck and holds 24gals) which is one bottle. It seem that you go through the gasoline fast. But, I do notice a boost in engine and it idles soother. It is as if I added a higher octane of gasoline. I have noticed that if you have had a recent oil change and the oil is still clean it will become dirtier much quicker. I guess it may be because it doing what is supposed to do. After I refill my tank with gasoline, I do notice gasoline consumption improves.

Awesome product. Use it on both my vehicles.

Great product works as advertised.

Could of been this with a combination of a amsoil oil, but my gas does in fact last longer, and everything is smoother

My vehicles run GREAT

I suppose it was fine Really no way to tell This is more of a oil-change maintenance item I add each 7000 miles

great product

Helps my 2000 Yukon with 320K miles run sharper, smarter and cleaner. My baby gets nothing but Amsoil products!!!!

Peace of mind with regular maintenance.

this product is excellent

I use this product in my 2015 Honda Pilot

I really like the out come of using this.

Every time I go to Mexico I buy 5 to 6 bottles I used 3 going to Mexico and 3 coming back. The performance of the truck when I go through 2 bottle I can tell the difference by alot because the truck start using less gas and I can fill more power.

Noticed gains the first time I used it. Easy to use, one bottle every 3-4k miles and piece of mind knocking my entire fuel system is maintained.