Customer Ratings & Reviews

Use Signature 0W30 over 5W30 for greater engine protection , engine runs cooler , better fuel economy and way better for catalytic converters ! Also the 0w30 prevents low speed pre-ignition , another plus ! I am an automotive repair shop owner and my shop uses this oil in all of our newer GM cars and light pickups , except the 0W16 models !

My car now has 200,000 miles and I have never used anything other than Amsoil. Runs like it is brand new. I think it will last another 100,000.

Great product but shipping company used is terrible. Will stop using Amsoil if they continue to use UPS. Products arrived again with oil and filters all over my drive way. UPS is notorious for destroying the shipping boxes. I know, as I worked at UPS. Terrible shipping company.

Great product but shipping company used is terrible. Will stop using Amsoil if they continue to use UPS. Products arrived again with oil and filters all over my drive way. UPS is notorious for destroying the shipping boxes. I know, as I worked at UPS. Terrible shipping company.

I decided to use Amsoil for the 1st time and I am 100% satisfied with the results. My car seemed to run a lot smoother and and is making the car run fantastic! Believe the hype! I am Nee to using Amsoil, and would recommend to anyone. I’ll update in the future to see if I still feel the same, but as of now, it’s worth the money to spend if you want to keep your vehicle for duration, and maintain it well. Love this oil!

I decided to use Amsoil for the 1st time and I am 100% satisfied with the results. My car seemed to run a lot smoother and and is making the car run fantastic! Believe the hype! I am Nee to using Amsoil, and would recommend to anyone. I’ll update in the future to see if I still feel the same, but as of now, it’s worth the money to spend if you want to keep your vehicle for duration, and maintain it well. Love this oil!

I have been using Amsoil Signature Series Oil in all my vehicles and motorcycles for past 3 years. Quality and longevity of oil is excellent.

Just what I needed for my older truck '07 Nissan Titan. Thanks!

Very good oil.

I use Amsoil in everything i own

This oil plays a crucial part in protecting my high revving (9000 rpm shifts) engine. The oil also stay cleaner than the other oils I've used in the past. I am very confident in this oil!

I have been using Amsoil for 20 plus years. In my book it's the best oil on the market. I use it in everything I own. has not failed me yet.

I keep forgetting to change the oil in my wife’s 2017 Subaru Outback. I am glad I have Amsoil Signature Series oil in the car. Unsurpassed protection even when left in for extended periods.....

I have been an Amsoil customer for over 20 years. I could not be happier with the performance of this 5w50 It has lived up to the billing and then some. I spend a ton of time in stop and go traffic during the week, and tow all my toys to the desert on the weekend. I use this in my 2020 Chevy Silverado, and work it hard all the time. Way to go Amsoil!

The The only real world experience I can give about their oils is upon purchasing my new vehicle to factory use their cheap standard oil. Whatever that might be. I noticed some strange sounds coming from the turbo I’m at higher driving speed‘s and long durations decided to go with the top-tier oil found some stuff online for Amsoil tried it all sound all erratic noises from the turbo stopped immediately. So I have to assume this is a much better product. After starting to use went online and found all the tech specs and comparison testing that confirmed it. And as a sidenote I’m all engine manufacturers with these new gas direct injection turbo engines do require and state you need to use a really high-quality oil to control the burn off in the coking a fax and this oil definitely fits the bill.

Fantastic High-Temperature/High-Shear Viscosity (HTHS) of 3.11 to provide better wear protection for main bearings. Super low NOACK Volatility of 6.7% to prevent vaporization via PCV system - probably one of the lowest values on the market for a 5W-30. A heavy dose of moly to reduce wear, friction, and parasitic loss/drag and increase efficiency. My 2013 1.6L I4 GDI Hyundai Accent seems to runs really well with this in the crankcase.

This is a great oil and it holds up in all conditions only oil I use!

I've been using this oil company since the early 90's and have reached over 200 thousand miles in every vehicle it's been in.

My Ford Explorer has 150000 miles on it. Nothing but AMSOIL goes into it. I just took it in to my local mechanic for a 150000 service. He is impressed with how good it runs. Compression check is high, lifters are quiet.

Almost as good as grandmas cornbread.