Customer Ratings & Reviews

pickup starts easier and runs smoother, no more rough idle. and fuel mileage increased by approximately 2 MPG.

my first year using Amsoil products in my car and small engines. so far I cant complaint .I really notice the difference and will continue to use Amsoil products.

Works like a charm. I notice and appreciate the difference. Have even gone the extra mile switching to the engine oil and coolant. Very fine results.

Seems to help acceleration and improves mileage by about .7mpg on the highway towing my Teryx 4x4 on a tandem axle trailer.

the product works as designed...

I felt more pickup and a smoother ride.

Tried other products including Redline . Noticed very little difference with the Redline product and vehicle started idling a bit erratic at 23000 or so. Put in PI and after about 100 miles all erratic issues resolved . Great product . Buying more

This cleaner has a high dose of aminated alkyl compounds for great cleaning power.

Great stuff...engine runs smooth...

Love this product. Seen a significant improvement in proformance since using this product.

My husband puts a half bottle of this in my gas tank every other fill up. 150000 miles on my Ford Explorer and it’s never needed any fuel system work. Injectors are good and the motor is very smooth.

Could use a little more cowbell.

This is the best fuel system treatment that I've ever used. Improved my performance and gas mileage as soon as I put it in my tank!!!

makes sense to use this in your gasoline engine... the crap fuel being sold is damaging to our engines. I am convinced Amsoil knows exactly what they are doing. I am a loyal customer and user of their products.

Now this Gas Additive does WORK. Have used it in the Motor Home for 12 years now and all the other vehicles I have. It does improve the gas mileage and I certainly get engine performance out of it.

Works as designed...a little more expensive than the store products.