Customer Ratings & Reviews

I use this every oil change.

I had an injector contribution code for injector 3 that kept coming and going with a rough idle that would clear up. I ran the flush last oil change. I’m about due for another oil change and the code and rough idle haven’t come back. Very pleased with the results!

This product is superior to all competing options, but you have to follow the instructions. Works VERY well.

I use this engine flush on every oil change in my truck. Good stuff.

Been using since pretty much day one!

Clean out old fluid like water fast an easy

Tried it the first time in 100000 mi. We shall see

Quiets lifters and gets the engine ready for Amsoil. Would highly recommend the engine flush.

Cleaned out engine and improved performance.

I've used motor flushes for over 40 years and I've driven all my vehicles to over 200,000 miles and in one, 367,000 before rebuilding it. Amsoil engine flush is cost-effective and easy to obtain. I use it in all my vehicles every 10,000 miles.

I have a car 2006 that has the AFM (automatic fuel management ) system and AMS Flush seems to have helped with the rough idle & misfires. THANKS for this product, I will be using it again.

Amazing results with my 20 year old Nissan Xterra. Besides making the 4.0 run smoother it increased mileage by almost 2 mpg (highway). With the current cost of fuel anything that does that has earned me as a loyal customer.

This product is very special; it cleans my engine without altering the oil's chemical composition, removing all the dirt that accumulates in my turbocharger. This renews the life of my engine every year.

used this a few times now, major difference in engine performance after using and new oil change, engine runs smother

Seemed like a good idea at the time but I always use this before an Amsoil change

Have always used this product after engines or transmissions are broken in to flush and swap to amsoil. Its simple follow instructions and do a good warm complete drain and it will get stuff out of a engine or transmission you would never know existed. Typically after using product be it in a hydrostatic drive transmission or old diesel engine thats been on conventional after swapping over to amsoil it takes hundreds of hours or thousands of miles to not have to struggle to see oil on a dipstick because its that crystal clean.

As long as you follow the instructions on the bottle then it makes a great engine flush. I have started using it with at least every other oil change.

Awesome product! Flushed tons of soot out of my engine after truck going on a diet. I will be using it in my transmission soon.

Great product, love recommending it.

I would say it is definitely doing something based on the color change in the oil. Checked oil with dipstick made note of color ran the flush through color was darker on the dipstick. When drained the oil it was definitely darker in color, so the flush is definitely loosening up some stuff in the engine.