Évaluations et avis des clients

While this is in your tank it really dampens the performance but thats just because it's cleaning so dam well cuz soon as you fill a new tank once the pi has ran its course man you can really feel the difference I am super impressed

one a year to clean the injector, the best to restore power!

Increased gas mileage car runs smoother and quieter.

I put this with every other fill up. Used for, HD, GMC Sierra and wife 2012 Honda CR V.

This product is great. I've used a lot of others and this stuff seems to revive my wife's turbocharged lezbru/subaru better and longer. I use it at oil change and halfway thru oil change mileage. Thanks, good stuff. Keep innovating and I'll keep buying.

This, along with Upper Cylinder Lube, brought my engine back to life. Snappy response to throttle, quiet, smooth idle. I'm Amsoil for life

If I'm going to put fuel system cleaner in the tank of any of my vehicles, I prefer AmsOil PI. It's just better.

The first time I used the PI was along with my first Amsoil oil change, including Amsoil filter. My acceleration was more immediate and responsive. At a red light, I had to turn off radio and look at the tach, it was idling some smooth and quiet, I thought it stalled, but it didn't. I love the complete Amsoil line up and so does my 2020 KIA Sportage.

I use every other oil change to keep everything clean. Loves this stuff.

One bottle every month at fill-up. Does it work?? 07 Grand Marquis Mercury runs like new. 184K miles with no complaints. Looking through the oil filler cap, everything looks clean as new.

⭐️⭐️⭐️⭐️⭐️

Helps with upper cylinder cleaning and fuel efficiency. Not sure exactly what the average mileage is raised but near 1 to 2 miles per gallon.

Excellent product that does exactly what it promises. Same road trip, started at 20.5 mpg over 100 miles. Added Performance Improver at next fill up in my 165k mile 2014 GMC Sierra with the 5.3L L83. Increased fuel economy and throttle response over the second half of the trip. Got 22.1 mpg. This improved fuel economy has persisted. I have filled up 5 times since then and the improved fuel economy is noticeable. I highly recommend this product.

I use the gas additive once a month and my engines runs clean and smooth!

It worked as advertised just like every other product I have used from AMSOIL.

I had been experiencing a rough idle and acceleration with my 2016 VW with a V6 engine. I previously tried several other products to correct this. None worked. Using one bottle improved the issue and a second bottle eliminated it entirely I now use one bottle every few months as a prevention

Made my car run great again.

I’ve been using P.i. additive for a few years and feel it works well

Install this in both my vehicles every 5k oil change, keeps fuel system especially injectors operating properly.

So my older tahoe will ping slightly if I use regular gas.. ran a bottle of this thru her and ping is no longer present with regular gas