Customer Ratings & Reviews

it is very good, make my car idle smooth, much less vibration.

Exelent

Improved gas mileage, engine performance and helping upper cylinders for sure kinda of like new spark plugs on an old set of plugs it helped restore power.

Works as described.

Knowing that it helps the top end gives me confidence when I hit redline in my vehicle, especially when my modifications increased the redline by 800 rpms.

It's always hard to tell the effects of an upper cylinder lubricant However, I like the fact that it provides a degree of lubrication for all the way from my fuel pump through the injectors and cylinders. If you trust that fact that all Amsoil products are excellent Trust that this on works just as well

Another great product.

Top notch product excellent quality and performance

Great additive to keep high pressure pumps running in modern fuel systems.

Added to stale ATV oil in two of my quads and made them run a lot smoother

Put this in my 2020 Honda CRV, mpg jumped from 32.4 to 34.9 in town driving. I wonder what the PI Fuel Additive will do. Engine operates quieter and lower rpm @ idle. Definitely using this in both my Hondas at fill up!

I would put this against any other fuel injector cleaner out there. Great stuff.

This is my first time using it

Good stuff.

Perfect

Superior product does what it’s design ed for use regularly in my vehicles and my cousin’s.

Highly recommend this product! My engine runs quieter. Smooth acceleration. Hopefully it will keep my injectors clean as well.

After running a tank of P.I. Performance improver, I have used this product with every fill up. I have noticed improvements with acceleration as well as a 1 MPG improvement with fuel economy. Since my vehicle is a T-GDI, any upper cylinder lubrication is very beneficial in reducing wear and tear, keeping injectors clean, and keeping carbon build up at bay. I will continue using this product with every fill up.

Great stuff I use it every oil change

It is a great product use it at every fill-up in Honda Oddesy. It has had some packaging issues they fixed the cap problem you had to use pliers to remove the cap (tread issue). They need to make the seal with a pull tab like it had in the past. I have to use my teeth to remove the seal. It probably not good to have additives in your mouth. I'm sure they can remedy the package issue. The package is why I did not give a 5-star rating.