Customer Ratings & Reviews

Amsoil is simply the best oil out there. I tried another synthetic name brand that starts with an S and it doesn’t even come close. Amsoil hasn’t even started to oxidize when it’s drained. Every other oil is severely oxidized and breaking down when it’s time for an oil change.

150,000 miles with no problems, thanks to the Amsoil 0w20 Signature Series Oil. Cleanliness that is unmatched due to great additive engineering.

The best money can buy , ive been running amsoil since 1992 in everything I own /race I have a cpl v6 explorers with 300,000 miles and the inside the valve covers is just as clean as the it was new . I run it in my Harleys,jetskis hell even my weed eaters chainsaws and will continue to use it until I expire.

Came quick exactly as ordered thanks

I use Signature Series 0W-20 Synthetic Motor Oil on both 2015 Subarus. This allows me to only have to change the oil only once a year. I have doing this every year I owned the cars. Both cars run as good if not better then they were new. I have complete confidence in Amsoil for protecting my Subaru engines.

Great product. Fast delivery, had it in days. I have been using Amsoil in my Harley and now doing the same for my Explorer. So far, so good.

This oil is a quality synthetic oil at a great price.

It's synthetic oil. My Mazda likes it and if she is happy, I am happy.

No question on who creates the top oils.

I’ve been using AMSoil for about 40 years in all my vehicles and for good reason, its the best! I won’t stop using it unless they quite making it, and that’s not likely to happen!

Been using this in my CRV's for a couple of years. Yes, I like it. Have had no problems with the engines while I have been using AMS oil, in any vehicle. Seem like they really like the combination of AMS oil in the transmission and the engine. Getting really good milage. :-) w

My favorite oil by far! I don't put a lot of miles on my daily, so I change the oil once a year....

Amsoil synthetic is liquid gold in a bottle

I have been using Amsoil Signature Series 5W-30 Synthetic Motor Oil for many years and could not be more satisfied. I did not believe the claims at first and would send a sample of my oil off to be analyzed and it came back still good. I did this at 5000, 10000,15000, and 20000 miles. This was back in 2005. Anyway I am truly satisfied with your oil and use it in all my vehicles.

I've used nothing but Amsoil products my whole life. This particular oil exceeded my expectations. I've built and repaired vehicles my entire life since childhood. My great uncle said there's no better product out there and I agree.

Was using Mobile 1 in all my car and decided to switch

Awesome oil!!! Have been using now for the better half of fifteen years. Performs flawlessly!!!!

my car runs alot smoother now it is a 2001 chevy lumina with 186000 miles on it does not smoke never did just alot of miles on her gets good mpg

I’ve only ever run this oil and Amsoil filters, works great, very happy

This is great oil. I had run Royal Purple for the last change and this is much better. Engine is smoother and quieter. On a recent trip to Chicago with 3 people on board the 2016 AWD Honda CRV achieved 34.9 MPG. That is best this vehicle has done. CRV has 36K on currently. I change once per year averaging about 9,000 miles. Getting ready to change my Tundra over to Amsoil signature too.