Customer Ratings & Reviews

Started my synthetic oil journey using Mobil 1, every few thousand miles I would have to add 4 to 6 ounces of oil, and the engine had low mileage on it. Switched to AMSOIL and now with 270,000 miles on my engine, I can go 12,000 miles and not have to add a drop of oil. So if anyone tells you all synthetics are the same... I beg to differ.

Service was very fast. I am not sure I will test the 25,000 mile limit, but any oil offering that kind of mileage for its product has to be described as ‘Top Shelf’.

Used amsoil oil filter dropped oil presure significantly lifters were making noise replaced with ac delco every thing is fine oil is good stuff

Engine is clean on the inside doesn't have a burnt smell like the Royal purple did when changed and engine starts quicker in negative temps

I use this oil for my 6.4 liter hemi. It gets better gas mileage and reduces the "hemi tick"

AMS OIL or no oil

Turbos were smoking on 5w30 with full down pipes . Up'd it to a thicker oil turbos barely smoke! Great Product! *****

Use this on my 2012 Cadillac Escalade. The motor is silky smooth and quite. Best oil in the market.

We run this product in the hardest and harshest conditions, run extensive oil analysis per all the cars we have and it’s liquid gold. Nothing comes close, nothing else replaces it.

I used Amsoil scene 1974 never lost a motor. Dragrace for many years too

I love it oil. Have been using this oil since 2011 on all my cars. One of my cars has 292k and another one has 262k. Never have any of the engines burned oil or have any type of leak. It is a true testament of the quality of this oil. Best of the best.

28 plus years running this oil. Feel confident its doing its job protecting from heat and wear,

A friend recommended AMSOIL, I’m a customer for life. Instantly noticed a difference in how smooth my truck ran. Highly recommended.

Missing 1 quart of oil from case I just got to open case to change oil before long trip and noticed I quart missing.

Awesome products!!

Very pleased with Amsoil products. Lots of science and technology that goes in to everything they sell. My engine runs very smooth and quiet. I have been slowly switching everything we own over to their lubricants

Never had problems with this oil!!!

I've used Lubrication engineers products for 40 yrs,but I always said if I cant get what I want from LE I'm changing to amsoil and that's what I did.It's great stuff.

The motor developed a head gasket and head failure at 125,270 miles. When the Ford mechanic removed the cylinder head the top of the head, i.e. cams, followers, springs, retainers, overall head surface were clean with absolutely no debris of any kind evident. Also the cylinder bores still had much of the cross-hatch pattern of the original cylinder honing remaining. The Amsoil Synthetic performs fantastically.

One of few products that I fully trust.