Customer Ratings & Reviews

Been running this in my silverado 2500HD 6.0L with 182,000 MI now and change once a year with roughly 5000-8000 MI. On oil. Doesn't burn or leak anything. I even use it in my transfer case which gets changed every oil change. Eliminated the vibration I was getting. Amsoil all the way! Hoorah!

I've been using this in my 2016 Silverado 1500 for many years now. Just recently, last 2 years, I decided to see how far I could push it on milage/time between changes. I had it tested at 6, 12 and 18,000 miles, and even at 18,000 the oil tested well within limits. I used to change my oil every 6,000 miles, and even with the added cost of this signature oil and the extended drain interval AMSOIL filter I'm saving money. I only needed to be able to go every 12,000 miles and I'm changing at 18,000. Really happy with all AMSOIL products, oil, lubes/grease, cleaners and fuel additives. I'd rather pay a little more up front for a quality product and have my tool/vehicle/whatever work the way I need it to when I need it to then save a couple bucks on oil changes.

I've been a loyal amsoil user from 1975 This oil far exceeds all requirements for my Toyota even double the change interval plus some. 100% confident!

I have only used Amsoil Signature 0W-20 Synthetic to keep my 2013 Subaru 2.5L flat 4 cyl. like new. It runs better than new with almost 70,000 miles. Absolutely no engine issues, ever. The Signature Syn. keeps the engine internals spotless. This Amsoil product meets or exceeds API standards.

This is forever be the only oil i use.... Everytime I change my oil my oil looks perfectly good

Hands down superior oil, treat your vehicle good and they will treat you better.

Using this oil and Amsoil Oil Filter in my Ford Explorer 2020 and Chevy Express 3500. Definitely one of the best oils out-there. Easily i make 10,000 miles on it and the engine runs smooth and quiet. This oil is money and time saver. Instead of changing it couple of times, you just do it once every 10,000 or 15,000 miles

Best engine oil ever.

Bought it again, self explanatory.

I have 2010 Dodge Ram 1500 pickup with the 5.7L Hemi engine. The truck now has 145K miles. Every Hemi engine owner knows that these engines are prone to roller lifter failure, which then destroys the cam. This is the dreaded Hemi "tick". I use only Amsoil SS 5W20 as my best defense against this failure. The superior lubrication qualities of this oil should hopefully get my engine to 200K+ miles. I buy my oil and filters direct to get the best products at the lowest price.

I use this in a 160k mile pathfinder daily driver and a 2015 Camaro track car. No other oil comes close. I only use Amsoil for everything, coolant, diff fluid and transmission too.

Great Oil, have used this type Oil for years with no issues.

I have been sold on synthetic motor oils since the military switched over. I have used amsoil products exclusively and have seen over 200k in two f-150 trucks traded one in with 281k no problems with engine. Current truck has 210k and going strong highly recommend this product.

I have been using Amsoil filters for a long time in just about everything gas powered that I own. I have always maintained good longevity to my engines and I attribute this to the quality Amsoil product line.

I struggled with the 3K cycle that was beat into me my who life but I am a happy customer after 8 years. I use it in all my vehicles and have had absolutely no issues. The down side is I have to remember to put my vehicles up to do basic checks that I used to do every 3 or 4 months.