Customer Ratings & Reviews

I used this product on my 2015 Mazda 3 and 2017 Honda Civic Touring 1.5t and did not notice anything different, no improvement in idling, performance or mpg. I've always been using top tier gas on all my cars so that might be the reason why I'm not noticing any improvements.

Use it in my tuned 2018 540i 450+HP 500+ tq. I run higher octane fuel 90% of the time, or an ethanol blend so every couple of tanks I run normal 93 octane and a bottle of this and the Upper cylinder lubricant. Keeps things running smoothly and clean. I use all Amsoil fluid in all my vehicles (engine oil, transmission fluid, diff fluid) and have never had issues or experienced any abnormal wear.

Car runs smoother- good insurance for the fuel system

This works very good in my Optima with GDI. The best I have ever used and the price is really good for what it does.

Used it on a used 2007 Honda Accord V6. It helped bring the engine run smoother. Used with Amsoil motor oil, flush and filter.

This has boosted my fuel efficiency in may cars and keeps my away form the gas pump.

Beats any fuel additives I’ve used before!

A real fuel system cleaner I've gained 1.8 mpg in my truck

I used this in my 2013 F150 before a road trip. I usually average 15 mpg on these trips but noticed that I had returned at 17.1mpg after adding this to my tank. Its been a little over a year since the last treatment and I'm noticing a slight reduction on mileage so its time for another treatment.

Super product! It really works!

I feel this product "did" clean my injectors.

Stuff amazing, cleaned the injectors on my old Datsun with one bottle. Improved my mileage on my Elantra considerably, highly recommend it

Nice to know that my fuel system is taken care of too when I service my vehicles.

After using this I notice i am getting 2 - 3 mpg per tank. So it cleaned something and will keep using twice a year. I highly recommend using this every 5,000 or 10,000 miles.

I put Amsoil in everything I have, from my cars , truck, motorcycles, dirt bike, Boat, side by side, ATV and yard equipment. They even sell gun oil!

I have used this product in both of our daily drivers. They idle smoother and the gas mileage got a little better in both vehicles as well.

been using this product since 2004. work well and will keep using it

I use this every time we make a trip to other states. I only need one for a tank. I got about 44MPG!!! at one point during my trip. I averaged 40Mpg there and back about 850 mile trip one-way. I'm still getting great gas mileage for close to a moth after putting it in one tank. I highly recommend this product!!!

I use PI every couple of tanks of gas and haven’t had any problems.

This stuff really works. It really cleans the fuel system.