Customer Ratings & Reviews

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.

Safe to use at every oil change, but you must follow the directions.

The same thing the best product ever

I had never used an engine flush before so I was a little apprehensive about trying it. But after following directions and seeing the gunk that this product removed from my motor I was sold. This product is amazing and I will never change oil again without using it. Great stuff

Dear AMSOIL, I've been using AMSOIL products for [length of time] and am happy with the results. I'd like to request information about your products and potentially place an order. Thanks! [DannyRayMcCurdy]

All their products are amazing. First time using this and it did not disappoint

I was told this is the real deal !!! It worked well to say the least. My Car was all carbed up as Dad would say. When I did the 15 minute run and drain I couldn’t believe the amount of thick carbon buildup turned liquid in my made up filter in my drain pan. I thought the car was toast but it is now at 2000 miles on this oil and has only burned a little oil. I’m going to flush it one more time when I get home in April and I no doubt will be impressed again!!! Highly recommend!!!!!

My local dealership recently had to replace the upper oil pan gasket. When I went to pick up my vehicle, the mechanic asked what type of oil I used. He was extremely impressed by the internal cleanliness of my engine at 120,000 miles.

I put this in my diesel engine and it cleaned out my diesel where the dipstick is showing the oil as yellow really good

Outstanding ,, the drain oil on my Cadillac was filthy , the car has 80,000 . Plan to use it again before next oil change.

used to flush the engine on my Chevy pickup. Easy directions