Customer Ratings & Reviews

I have a 2003 Ford Explorer Sport with 299K miles on it. I have been using various name brand fuel additives over the last 100K miles with placebo effects. After one tank with AmsOil PI I noticed a definite increase in accelerator response and a smoothness in engine performance. I am sold and will continue to use PI every 4K miles.

Use this in my jeep. Truly believe it works. Thanks!

I added the Amsoil P.I. Performance gas additive the week before an oil change. I was getting 23-24mpg per tank before adding the product. During that tank the mileage started approaching 25mpg. Did the oil change, transmission drain (Amsoil Transmission fluid), and changed coolant (sorry not Amsoil, they don't make the product for my Hyundai. The tank after the oil change my milage was up again to just under 26mpg. I am now almost four weeks out from the time I added the additive to the gas tank. I am averaging just at or a little above 226mpg every tank. Simply amazed!

Works great, cleans injectors and helps maintain better fuel mileage. I use it in all 8 of my vehicles every 5k

Just run this in your tank. Your car will be happy.

Great stuff. Well recommended

This is amazing, improved performance on all my vehicles. Improved my gas mileage.

Love the product, seems to work like it supposed to

This is my first time using this product so far everything is good. I hope it is cleaning my system out and I hope it increases my gas mileage. I will follow up and let everybody know what I have found out.

used to remove the emissions light, works great.

Use per instructions and keeps my cars injectors clean for over 75,000 miles.

Boosted the fuel economy on a 2010 tacoma with 396K on the ODO. Notable improvement in performance so will use again!

I use this gasoline improver in two of my cars and it always cleans up the combustion chambers very well. If it does that imagine how good your fuel injectors are gonna look like and perform.

All Iuse.

Works great!

I really see a difference!

Works longer than other products from other suppliers ..

I run this in all my cars every oil change and I’ve noticed in one that hadn’t had a cleaning in a while got a little bit better gas mileage

Had a car with misfire code. Wasn't ignition or mechanical. Fuel was old and varnished. Removed old fuel added fresh fuel and the Amsoil P.I. gasoline additive. After 20 minutes of idling reset the check engine light and have had no more misfires.Thanks David for recommendation.

This stuff just works! It delivers what ot promises. Believe it!