Customer Ratings & Reviews

This product does exactly like it claims.

J looked your product up & they say you use the best ingredients to keep vehicles running smoothly & I want to keep my car running great

I can almost instantly feel the increased horsepower and over three tanks of gas. I can notice the increased gas mileage.

Used in my 2020 Cadillac XT6 for a hot start shutter. I used one bottle in a full tank of fuel and the issue has been resolved.

I love the way my truck performs after use this product.

Every oil change, every 5000 mi. Feel the difference

it does, one treatment made a big difference in my fuel mileage, the increase showed up on the tank after the treatment. But, it brought the fuel mileage back to what it had been several months prior. I buy good gas but the injectors still need cleaning. I will buy this again

This product works great. It is awesome. I use it all the time with great results.

I believe this product cleans injectors the best of anything I've tried before. I always recommend this to friends and family

Works great

Use this in both our vehicles every oil 5k oil change with Chevron top tier fuel. Keeps fuel system clean.

Amsoil's product offering is extensive because they understand that different applications require different solutions. I run PI in my wife's 2024 Telluride (which does A LOT of idling), my 2019 F250 and my 2023 Street Glide (burning off all those EPA-mandated crankcase nasties). The results are not immediate, but I've seen an reduction of carbon deposits on the tops of pistons and valve stems. One bottle ever third full tank on the cars, and a third of a bottle every third tank on my SG.

I put it in and o noticed the tank lasted me longer.definitely saw the difference in my truck

Ran two tanks with the product and injector cleaner works great

I very rarely leave product reviews, but this one deserves a review. I have 4 vehicles (mine, my wife's, and both of our kids), and 3 of them were bought as used vehicles. So far, I have run 2 bottles through each of the vehicles, and I have noticed a marked improvement in idling, acceleration and gas mileage. My younger son's vehicle had the best improvement. He has a 2018 Subaru, and after 2 bottles of Amsoil he went from getting 18 mpg in the city to getting 22 to 23 mpg in the city, along with much better acceleration and smoother idling. It was getting about 21 to 22 mpg on the highway, but I haven't tested that yet since using Amsoil, although I'm positive it'll be much better now. Additionally, I used 1 bottle, so far, in my mom's 21 year old truck. It idles much better and accelerates much faster and smoother than before. I haven't calculated the gas mileage usage yet, but I'm sure it's better as well. For the past 36 years, I used 2 other very well known fuel additives every oil change, and I did quite a bit of research before buying Amsoil. After the improvements I've seen in 5 different vehicles ranging from 2005 to 2026 year models...I will ONLY use Amsoil every oil change.

Nice product! Its works!

Again these Amsoil products have absolutely blown my mind! They seriously do exactly what they say the products actually do! One bottle in my 2020 Ram 1500 Bighorn Hemi Etorque with 105’000 miles and it seriously has new life! It has its umph again! No more hesitation on the pedal at all, I will use it as instructed from this point on !

Went from maybe 17 mpg to 18.5 after using this product.

Applied the Amzoil Gasoline PI to a 2015 Subaru Forrester 2.0L Turbo, and after one tank noted a smoother idle and what feels like an increase in power. Very pleased with the product.

This great product also does an amazing job of keeping the ports clean and will prevent the buildup of residue in the engine!