Customer Ratings & Reviews

I use this product in our 3 vehicles every fill up. There is no benefit putting a whole bottle in my tank(s) when I add 12 gallons of gasoline. I have been measuring out 3 ounces and feel it is enough for my needs. Either make it available in 3 ounce bottles or quarts. Please make the bottle seal easier to remove. Great product though.

I only put all Amsoil products in my Vehicle and my Wife's truck as well!! I refuse to use any other brand!!! Amsoil is Sensational

It saves me money on fuel injection cleaning at the dealership.

I use this in all my vehicles great product.

I add on of this every oil change both vehicles are running great

Good

I use this treatment regularly in my car. The engine is real smooth and I have seen improved gas mileage. My only issue is the seal under the cap. They can be difficult to remove.

I been using this for a year now and seems like it does what it does.

Better throttle response in a bottle.

This product works very well and I would recommend it. I'll be ordering more to use ans to have on hand, along with some other amsoil products

Keeps my 2012 hemi ram running like new.

I have been using AMSOIL products since the 70's & currently AMSOILS Signature oil, fuels filters, & other filters & products help keep our truck where we need it most, up & running & on the road.

Works great as an upper cylinder lubricant. It quieted my noisy valves lifters on my 1999 Toyota Corolla.

Have used this for years in many engines including lawn mowing equipment. Everything runs great after many years.

A great injector lubricant/cleaner for consistent use. Used in 5 family vehicles for smoother operation and to maintain clean injectors. Probably pays for itself with increase in MPG. Another high quality Amsoil product!

Product is great, however shipping was twice the cost of product. So will purchase at local store for what I need. Will not order on-line.

Great stuff keeps my Honda working like a charm

I started using this two years ago when we bought a new car for my wife. I also started using it on my Gen 3 Tacoma, which is supposed to get 22 mpg combined miles, but like most mileage estimates that was with a small child driving and no back seat. I now easily average 24+ mpg and have gotten as much as 26.5 mpg, with the only change being using the Upper Cylinder Lubricant with every fill up. This mpg increase also correlates with less wear and a cleaner fuel system.

I have a 2020 Ram 1500 hemi etorque, not only did this absolutely get rid of the dreaded Ram tick it actually is smoother than it was when I drove it off the car lot! I will always use amsoil products in everything I own. It’s simple, it does exactly what it says it will do just better! It also eases the stress and worry when you use a product that is actually good for your vehicle!

If you drive a newer vehicle with Direct Port injection you must try this product! It keeps the engine running smoothly and keeps the upper cylinders clean!