Customer Ratings & Reviews

Man I really love this stuff. And with modern engine tolerances, I don't worry about running this stuff in my car.

I have used Amsoil for over a decade for my corvette and never I have been so impressed with a product, quality and service and Price with order direct from Amsoil!!

I’ve been using AMSOIL signature series products for 3 years now and have ZERO complaints I’ve never had an issue with my order and the AMSOIL products are the only lubricants on earth that actually live up to the hype. Amsoil is the only oil you can safely run extended drains with. I’ve had nothing but good results with every product I’ve bought from AMSOIL. The gear oil and engine oil are by far some of the best lubricants ever made

I run this oil all winter in both our vehicles and it is just great. Both cars run like new. The detergents and quality, are just second to none. It also ships so fast. Love ams oil.

The best oil to use on anything!

Great oil that has been proven and protecting my engine over 200k miles!

Been using for 14 years and always delivered on time .

When I bought my new to me 2008 Honda Element EX, it had 165,000 miles. The owner described vtec problems and 'the code'. I changed the screen behind the solenoid valve and at the same time switched to Amsoil Signature Series 5w-20 and filter. Since then the vtec issues haven't come back even though the oil change intervals have been 15k yearly. Now at 256,000 miles it still runs great!

Been Running 5w50 Signature since my second oil change. Previously ran Motorcraft 5w50 synthetic but it dropped out of grade between changes. Both Whipple and Ford require 5w50 in supercharged 5.0 platforms. This is a daily driver with short trips on weekdays. Oil analyzed at every change with very low wear metals. Change oil and filter @ 5K, this oil stays in grade.

Seems like very good oil. I have read several engineer evaluations of this oil, and all show very good results. I will be using this oil for the duration of my ownership of the vehicle.

Oil was fine, but the multiple containers seems a bit redundant.

Switched to this oil from Pennzoil and I won't ever run anything different. Great oil.

I've been using Amsoil signature series for quite sometime. Nothing close to the quality and performance of Amsoil.

I prefer the Signature 0w20 oil in my 2020 Honda Accord Hybrid and my son’s 2022 Honda Odyssey since both vehicles often take very short trips in the Autumn and Winter. I’m confident the engines are getting the best possible protection.

Great oil for high mileage vehicles

Superior oil for my high mileage truck

Good reviews according to the internet for 5W30 full synthetic motor oil

I drive cross country in a cargo van this oil works great for long intervals between oil changes

Best oil in the buisness. All 8 of my vehicle run amsoil for the protection and peace of mind.

best oil ever hands down