Customer Ratings & Reviews

I use Amsoil PI in my Direct Injected Subaru Crosstrek as well as my Mitsubishi Mirage and 3/4 ton Chevrolet (which don't have direct injection). It seems to be doing a good job of keeping my fuel injectors clean/ engines running efficiently. Upkeep is key and so I've been using this on my vehicles since they were new. Idling and throttle response are good with all engines.

I use this on every oil change along with the upper seller lubricant keeps car running tipped up if it works don't change it

Throw a bottle of this in the tank the Next time you fuel up. Incredible fuel system cleaner !

My f150 sets a lot nowadays so I add this to help with lubrication

We notice a definite improvement in performance, gas mileage and how smooth the car runs after we use it!

Here’s what I’ve got: 2016 M-B E400 4-Matic with direct injection and 23,000 miles on the clock Results: Increase of 3 mpg City / 2 mpg Highway Summary: Enough said.

I love this product and put a bottle in every oil change.

With this additive my somewhat rough idle and poorer performance faded away . Now 80 mph is no problem when needed on the expressway .

Buy the best leave the rest.

Works very well !

I put one bottle in my 2020 Ford Edge ST because I haven't done any additives since new and I'm at 40,000 miles. One bottle and I saw a difference at once about 4 gallons went through the engine. My average gas mileage went from 19.4 mpg to 21.6 mpg And highway mileage is at 29mpg which it's never been that high. Well worth the price!

Left for Florida pulling 25ft RV. Put 2 bottles in the 36gal tank. I can't prove any improvement but it never missed a beat in 1450mi

2008 4X4 GMC Sierra 6.0 VortecMax. 129,000 miles I’ve use this fuel treatment since first oil change. I use it every oil change. Truck was delivered new with 4 miles. No engine problems. No injector issues, during spark plug change at about 100,000 miles plugs looked new. Chemical make up seems to have all the desired ingredients for a fuel treatment and I haven’t experienced anything negative as a result of continuous use.

I recently purchased this treatment just to get my order to $100 for the free shipping and glad I did. Very noticeable performance. My truck felt great. I will be using this every oil change for now on.

After one bottle of this miracle magic, the 4.7 V8 runs even better. A bottle of this every 3-4 tanks of fuel makes this 4.7 V8 purr like a kitten.

I use this product anytime I fill with non-top tier gasoline and for all road trips regardless of fuel quality. In a time of complex engines and higher operating temperatures, this product adds additional protection to the engine in my humble opinion.

i have used Red Line and Amsoil Pi for my Mazda 3 and Amsoil Pi came on the top. Excellent product highly recommended little expensive to get in Canada but worth every penny.

Been using it for a while and it works great been consistently getting better results with it used as recommended super fast shipping and easy to use

Works well. Keeps the fuel system clean.

Used it, very impressed