Customer Ratings & Reviews

Used it on the engine I noticed the the engine ran slightly quieter then normal

I have used it before on all my pickups I’ve owned in the past, before running Amsoil in them. Works great.

Definitely worth using, seen this stuff used on YouTube. So I had to try it. I was surprised how good it worked. Will be using it on every oil change.

It was mind blowing to see all the gunk come out of the filter. Hell yeah!

Definitely a must use product before oil changes to keep it clean. I noticed a rise in oil pressure after a few uses in my 2013 sierra that has over 167k miles on it. Trucks runs smoother as well as quieter.

My 2017 GMC Duramax has always had synthetic oil and always changed before it was required to do so. The flush was used as directed by Amsoil. When I drained the oil a big sludge of something came out and plopped in my change pan, I was very surprised. I have always used the best filters, ACdelco, Amsoil, or Mobile1. I seems to be a little quieter, l have nothing negative to say, it apparently removed something from what I thought would be a clean engine. By the way, for $10 bucks ever six months you can get preferred pricing on all their products. Meaning you can get the best oil on the market for less then you would pay at ChinaMart.

Keeps my internal engine clean

I have used the Amsoil Flush on most of my cars and on my adult children's cars as well as my grandson's cars. We all drive used cars and when a replacement car enters the family stables they get a flush before converting to Amsoil if they are of a higher mileage vehicle. On my Volvo wagon that I bought with 113,000 miles, I had one VVT assembly replaced by the previous owner prior to the sale. I did three flushes as I was concerned about it's service history. I really liked the car and negotiated the price based on buyers inspection and decided I'd do a few flushes and short drain intervals in hopes of improving the health of the engine. Six years later I have had no problems and the oil filter media looks great.

Great product

I was having a oil pressure light come in at low idle. Dealership said it was likely due to a sludge build up. After being told by a dealership it would take $1200 to treat with there product, I did my homework and tried AMSOIL Engine Flush. 15 minutes idle with the product as directed, and I have have no issues in months.

My 2010 Denali with the 6.2 L engine had the infamous tapping (sticking lifter) noise. The oil was new when I received the Amsoil engine and trans flush. I put it in and the new oil came out the colour of tar. After new oil and filter the tapping was a lot less. Ran it for 10,000 kil. and did a (2)second flush and again it came out black. Did the oil/filter change started it up and NO tapping. Great result I didn't expect.

I used it for 3 oil changes on my VW and Toyota. It makes life much easier by loosening up thick deposits. The oil drains out so much faster and cleaner with the added benefit of keeping the engine clean. Don't skimp out of oil, transmission fluid, and coolant.

Amazing how much crap this stuff cleans out of your engine!!

I'm using this product always on my cars, and customer's too!!

Hoping this product reduces the oil consumption problem my 2.4 liter Rav4 engine has; a design flaw in the piston oil ports being too small causes the sweeper rings to gum up, not "sweeping" the oil from the cylinder walls at each stroke., thereby burning oil. Couple that with the elimination of detergent additives in the oil we buy and you create a perfect storm for oil consumption. This Amsoil additive is safe, it contains strong detergents to dissolve sludge buildup. Hopefully this will loosen up the sweeper rings so they "sweep" oil off, and then open up the undersized oil ports around the top of the piston head. If this product is able to do this...it will save an engine rebuild. Time will tell...thanks Amsoil

Runs smoothly

I used this in a 4.3 V6 with 200,000 miles. I could definitely tell a difference in performance after serving truck along with the other Amsoil products used. Planning to use on all my engines when servicing them and every other time from then on. In my garage it’s a Must have!

I have a customer with an 2012 Honda Pilot. While adjusting the valves the front head was covered in sludge and oil and carbon residue. The VVTI system was not working properly due to this. I added a bottle of the Amsoil engine cleaner and ran the engine for 20 minutes. After removing the oil and changing the filter the DTC for number 5 cylinder went away. We are scheduled to repeat the process in 5K miles.

Great product for cleaning the VCTs, timing chain tensioners and oil channels. In combination with the signature series oil and the EAO17 filter I have 300,000 miles on my ecoboost and it still sounds like it did at 80,000

Great stuff!! Definitely gets the gunk out and ready for the good stuff!!