Customer Ratings & Reviews

I put this in my ole chevy and she seems to be running better and definitely idles smoother i would recommend to put in all older vehicles for sure.

was told needed new injectors after changing coils , still miss when first started until warmed up occasionally at red light. put 1 bottle of treatment and tank of premium with Amsoil octane booster ,been running great for 4 mo.

I have put this through a number of vehicles and noticed a difference in all of them

Very simple to add it at time of gas fill up and it seems to improve gas mileage and engine performance.

Great product

I’ve used P.I. on numerous occasions, always with good results.

Recently replaced plugs and wiring on 2009 Lexus. Used the additive 2 months later. Acceleration is superb

Improves horse power .improves gas milage Engine runs better.5 stars

This is a wonderful product. It does what it says it can do and gives us better performance and somewhat improved mileage.

All my gas engines get a dose of this once a month!

I’ve been using this for over a year now. I use to only run 91 or greater octane but after switching to this I run 87 and my fuel mileage is just as good as it was before. It’s worth it.

Great product

Definitely my ford 2013 is running smoothly after this.

Best performance Reasonably priced

Smoother idle right away. Engine runs better with slightly improved power. I will continue to use this in my 2006 Saturn Vue 3.5

I just started using this in my tacoma it's a 4 cylinder I have to tell you the performance is impressive it says it's good for 4000 miles im on my 2nd tank of gas and my gas mileage improved but the performance is awesome 👌

I run a bottle of PI through at every oil change to help with making sure the injectors in my DI engine are deposit free. The first time I did I could feel the car idling smoother after running through that tank.

Keeps my gdi motor running like new see

I’ve used this on different vehicles I’ve never had a problem with all it says it does. The gas mileage always stayed up.

This product cleans the entire fuel system. It is definitely noticeable. Even my cars idle is smoother. I highly recommend this product every 4,000 miles as directed 👍