Customer Ratings & Reviews

Gotta stick with a name you trust, and i trust these products to help me care for my engines

I try to use this product every other oil change and I'm amazed that every time it seems to get better MPG. I use it on a Suburban with a 5.3. When I started using the products from Amsoil it would average 14.5 MPG now it averages 15.9 MPG. Still not great but I'll take what I can get.

Been using PI now for several years. In my wife's previous Ford Expedition (2007 5.4L) she did not buy the most quality fuel all the time. Would add PI at every oil change and could actually tell a difference. I use PI in all our current vehicles as well. Not sure I see the MPG increase that it states, but it does help performance.

Bought the truck used. Was operating on f as rm fuel. Was never winter driven and stored in a quonset. 60k Km on odometer. Seemed to be burning a bit rich. Thought I noticed a bit of soot. After one application of this product I noticed a significant improvement in average fuel economy and the soot issue cleaned right up. The engine idles smoothly and power and acceleration was improved. I ran one applications through a 2013 Buick Enclave. Same results. Smoothed out the idle and marked improvement in fuel economy. I’m happy with this product. W

This is the first fuel additive I've used that actually does what it says it will do. Used it in my GMC truck that had hesitation issues and it cleared up the hesitation and skipping after the first bottle.

Best gas additive bar none!

When I started using PI I immediately got better gas mileage and engine ran noticeably better. Have been using it ever since and will never stop.

It’s decent but would not say it’s any better or worse than say Techon

This product is awesome. I recognize a significant in throttle response with this Pi Performance.

Use this product in our 2017 Class-C motorhome, Ford E-450 super-duty V10. Runs strong!

Keeps fuel injectors clean.

Cleared up the cold hesitation my old f250 had.

I was a little skeptical about this product but after using it I’m a believer. My 2022 Odyssey had more power and I gained 1.5-2.0 miles per gallon. I will continue to use this for routine maintenance on my fuel system.

Love it

Did not notice a difference when used.

Well worth the investment

Great product, works well to keep your fuel system clean and your vehicle running smooth.

I installed a computer chip to turn off my gas cylinder deactivation system. My gas mileage should have dropped from the high 17s to high 16s. I put amsoil severe oil (80/90) in my rear differential and used PI gas treatment in my fuel. My gas mileage went to low 19s. Did my mileage go up because of the fuel additive or severe oil in my rear differential ?

Absolutely phenomenal engine and gas treatment.

Best fuel additive on the market!