Customer Ratings & Reviews

This the best oil for you tubo or Hi RPM vehicle I will recommend this product all day long because of the quality and the service for this product

YouTuber Project Farm pitted Amsoil against several other top brands and Amsoil was the top dog in nearly every category. Do I wish it were cheaper? Yes. I'd use it my commercial applications as well, but as it stands this oil is really only worth using on a vehicle you really care about and plan to keep for a long time.

Works great in my 2.5L EvoX Mivec still works. Amazing oil

I have used this product in my 2014 Mustang and in my 2017 Taurus. Both cars ran very well and the inside of the engines look like new, at around 80,000 miles. I change my oil and filter at 15 to 18 thousand miles and have never added a drop between oil changes. I plan on keeping the Taurus to at least 200,000 miles.

I change the oil for my 2016 Handa CRV, 2012 Chevy Silverado and makes my cars run smooth and quiet

Great quality engine oil. It has significantly quieted down my 2.4L Tigershark at idle and at start-up. This engine used to consume at least 2 quarts of oil between changes. I've only had to just top off every now and again after switching to Amsoil.

I know this oil is the most premium oil that’s why I chose to use it in my 2021 Shelby GT500. I demand the best engine oil that’s why I’m using the Amsoil Signature series motor oil!

We have purchased 2 12 12 quart cases so far. delivery was fast and easy.

When I purchased my new Kubota tractor with a diesel engine and saw the manufacturer recommend 10w30, I knew I was switching to amsoil. I trust nothing else in my engines and I even use it in my generac home generator. Thanks amsoil for a great product that saves me money in the long run!!!

I noticed my engine runs smoother and when it's -20 below zero my engine starts right up with no tapping! I recommend amsoil to everyone I know. I will never use any other oil but amsoil. Fast shipping and great customer service.

I have been an Amsoil user for over 25 years, and it has never disappointed! I use it in all my vehicles, my lawnmower, and anything else that uses oil. I'm a busy driver, and I can be rough on my vehicle, but I drive with confidence knowing I have Amsoil in the engine! I have recommended all of their products to many friends over the years, and they all agree....It's simply the best!

I run the signature series oil in everything I own. I had this oil in a truck when a head gasket was blown while driving home 40 miles away. My engine was running hot but did not loose the engine and I made it home. I trust nothing else!!!

Signature Series holds up very well to the drain intervals recommended by the manufacturer (10,000 miles/1 year) even without an AMSOIL filter and with +5% fuel dilution in oil analysis reports. Honestly, I even think it has an effect on the oil life monitor, since it did not trigger a maintenance warning until about 700 miles left in the drain interval while a competitor brand triggered it at 1,000 miles left. I own a 2017 Volvo V60 Cross Country and use 0W-30 Signature Series instead of 5W-30 Castrol Edge Professional as recommended in the owner's manual (since the car requires ACEA A5/B5).

Hands down best oil presently on the market and I've used a few over the years. My cars run so much better. I also use Servere Gear in my SUV differentials which is excellent

I've been using Amsoil for at least 15 years. I started when my brother-in-law, an auto who owned and operated a shop of his own, turned me on to it. While I'm not personally sure about the benefits of the PI gas additive (I have no idea how to evaluate the benefits), I am 100% sold on the Signature Series synthetic motor oil and Ea filters. I have driven almost all my vehicles well over 200,000 miles, and had only one not go until I decided to sell it. The one that blew a head gasket on me was done in my one of my daughters, who at the time was a teenager learning to drive.

I've been using Amsoil for at least 15 years. I started when my brother-in-law, an auto who owned and operated a shop of his own, turned me on to it. While I'm not personally sure about the benefits of the PI gas additive (I have no idea how to evaluate the benefits), I am 100% sold on the Signature Series synthetic motor oil and Ea filters. I have driven almost all my vehicles well over 200,000 miles, and had only one not go until I decided to sell it. The one that blew a head gasket on me was done in my one of my daughters, who at the time was a teenager learning to drive.

Smooth sounds is all to be said., very happy. Thanks

I finally stepped up to the best motor oil and I’m glad I did. Amsoil came highly recommended to me by a good friend who swears by it so I made the switch. This oil is the best out there. I can actually hear the engine running smoother after switching to Amsoil. If you want the best oil I’d definitely go with Amsoil!

I like the Amsoil SS oil in my sierra runs a bit quieter, most of the GM lifter chatter is gone. I used this SS oil in conjunction with the mobil 1 filters.

the only oil that keeps my 3v 5.4 ford quiet with 417000 miles on oe engine