Customer Ratings & Reviews

Every time I use this, my vehicles run better and mpg goes up as well. Recommend highly

Smoothed out the idle and throttle response improved. I don't recommend using this all the time, but I think it is a must with every few oil changes.

I use this every oil change, works great

l usually sad a bottle to tank gas every 5,000 miles to prevent any trouble with gas and engine

Seen immediate results when I put this in my truck. Improved the idle better than several other products that I have tried.

Use it in all my vehicles, snowmobiles, motorcycles, and other gasoline powered stuff.

I used on a 2008 Mercedes Benz c300 and got great results.

smoothed out my idle and the car has a bit more zip now!

It actually works amsoil is a excellent product I use amsoil in every car I own. From this to there oils.

This is the best fuel treatment hands down

My friends & I use this product every 5000 miles & we love it !

I dont use it all the time but every time that I have my freeway MPG jumps from about 27 to about 30 1999 C5 Corvette.

You put it in your gas tank and it leaves through you tailpipe ..... How can I review a gasoline additive? I "think" it's helping but I'm not sure.

Great product when used as directed.

I use PI every 5,000 miles to keep my direct injection fuel system clean.

I bought a new to me 2014 F-150 FX2 with all the bells and stuff. I have been using the Amsoil products for years, and really like the performance that I get out of them. My hats off to the guys that make our cars and trucks not only run better but last a heck of a lot longer. Very satisfied Pro shopper!!

This is the best stuff I've ever used