Customer Ratings & Reviews

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.

I've been a loyal Amsoil customer sense 2006. I have bought the products they carry for my equipment. Somethings I've had to go to the dealer for. But I would have to go back on my orders for sure. But I think in 2 years this oil has went up 40 a case. It's been anything over 100 was free shipping for a while. I would just make it over with sales tax. This order was over 150. For a case. There is another oil that is a very close 2nd. Almost equal. I used it prior to Amsoil. I sent this order back. I can change my oil for a little over half of what amsoil is charging. Amsoil is by far the best out there. Not arguing that fact. But you can also price your self out of the market. I really like the product. I'm sorry I have to go another route. It is so convenient to just place the order and every time I have it within 2 business days. 10 dollars a quart is plenty with the preferred customer price 12.50 is rediculas and the regular price being over 16. That's what the dealer would charge for there oil.

I’ve been using this oil in my 2014 Subaru Crosstrek since we bought it. We’re in the Cascade Mountains and it can bring on pretty nasty weather, and environment, in general. My wife is the primary operator and I need an oil that I absolutely can count on to get her through the terrain. I change the oil on an extended rate every year and it works tremendously. I use Wix filters and together I feel we have an unbeatable combination. The oil is always clean and the engine is quiet and smooth. The car runs like a Swiss watch and is routinely maintained. I strongly recommend this product where it is applicable and, personally, I won’t use anything else, period!!!

I've been using Signature series oil for a long time. I always get a great oil analysis. I use all Amsoil lubricants in all my cars and outdoor power equipment. I'm convinced that Amsoil makes the best lubricants.

Great products never let down. Intelligent people to deal with. Pricey, but what isn’t.

After using this oil what little bit I was burning has stopped, also it seems to hold up really well over time.

Meets and exceeds factory expectation have a investment like a car payment use the best to make sure it will last longer than you owe

Works great in my 2015 mustang gives that extra protection that is needed for lubrication to the dual overhead cams and high rpms

I have used Amsoil products for a long time. Their products have never failed me, and I feel my vehicles get the maximum protection available to give the engine the best chance at a long and productive life!

One star because Amsoil should know better than to only offer product in quarts or 55 gallon and not one gallon containers for oil changes by DIYers. Shame on Amsoil.

Love it run it all in our chevy suburbans, change oil every 7 months

I've been with AMSOIL since before 2000 and have used many of their products. There are no other to match their quality period. Their 5w30 is the top of the line. Before I was introduced to the product I used Mobil 1. I chose AMSOIL reading up on their products and later joining up as a Dealer than later in 2006 and 2008 attended the AMSOIL UNIVERSITY. The University has since gone and well I'm still into AMSOIL. Great Company & Great Products.