Customer Ratings & Reviews

This product does exactly what it is advertised!!!!!!!!

I’ve been using this for the past year. No doubt it’s just as good as other products from AMSOIL.

You can feel the power

This is my go to at every oil change and midway to help with internal combustion carbon build up.

Excellent product

Tried this for the first time was really hoping that it worked for the price compared to others that I have used and wow was I surprised it really made a difference. I will continue to buy this product and keep using it and have recommended it to many other others.

Great gas treatment the best I’ve ever used

if there is a product I trust, I use it, and here is one of them

This stuff works wonderfully. My gas mileage went 3 miles per gallon

This product works much better than other off the shelf products. You might even notice a slight drop in performance during the fuel tank that the product is cycled through. Wow what a difference in the following tank! It's like your injectors were plugged or your fuel pump wasn't working well.

I have heard about your products while I have been using chevron products which I never saw a difference but when I use yours ga additive I felt the difference right away on my jeep gladiator no more shaking or hesitation on acceleration thank you

I used it to clean my fuel line! It works great!

Love your oil it’s nice to no you don’t have to worry about it when I use your oil

I'm not a scientist, so I can't provide anyone with specifics. It seems to do a good job of keeping the engine internals clean. I use it at every oil change on my wife's car.

Great additive every once in a while

Put this in an empty tank then filled up and got easily 3 mpg more on the highway than usual. Great stuff 2018 Silverado 1500 4x4

Works as advertised. Notice the difference right away at my first oil change at 13,000 miles / 10% oil life on Monitoring system. Bought my charger at 4,000 miles. Twice before every oil change seems to do the job. I only use it as recommended per instructions.

Everything that occurred in your video happened with my 2003 Ford Explorer Sport (301k miles) after one tankful of gas. Increased acceleration, smoother idling and increased MPG. I am extremely pleased with the results of the Amsoil P.I. especially after using many competitor's products with no results. Great job, Amsoil!!

PI seems to work cleaning the injectors.

Been using this product for more years than I can remember, yeah I'm old! Keep up the good work Amsoil!