Customer Ratings & Reviews

Good stuff, use it on all my cars.

I have relied on Amsoil Signature Series in all my vehicles for the past 7 years. 2 pickups, 5 cars, more than 1 million miles. I've never had a single oil-related issue in any of my vehicles, and I have complete faith in these products.

After replacing the oil in my car with Amsoil products, the car runs noticeably smoother and I have actually seen a slight bump in MPG.

Love this oil been using it for years and my Lexus runs so smoothly since I switched it to Amsoil.

I used to use royal purple now this is my go to product Its one great oil and I use it in all my cars from 2020 GMC Denali to my BMW 528i suburban expedition mazda and friends vehicles

Only run amsoil!

With Amsoil products my trucks going to last a long long time

So far so good truck running better

I have used Amsoil for the entire life of my truck, it now has almost 145,000 miles and couldn't be happier. I change my oil and filter every 20,000 miles.

I like the longer intervals between oil changes.

I've tried many engine oils and additives, amsoil is the greatest. The oil has has viscosity from the beginning to end. Keep that in mind I'm using this oil mixed with Euro amsoil for BMW X5 4 quarts of signature and 3 of European. Works the best has best of both worlds.

Awesome oil you don't have to change it as often and very high quality proven to last longer 25000 miles or year better then other oil brands and also for temperature stats this oil can withstand some heat keeps the oil from thinning out so much so thank you for the name brand that Iam happy to put your stickers and decals on my car.

By far best oil out there

I have been using this oil and its appropriately weighted siblings in all my vehicles for over 15 years, with few exceptions in between. I adhere to 10k mile change intervals. I always found a smoother running engine and far less oil consumption when switching to this oil after buying pre-owned vehicle. Even my GM 8100 in my Suburban uses less than half the oil it used to when I first got it. This at 175kmiles. I had partial engine failure due to lack of lubrication in a 07 5.3l GM V8 with Cylinder shutoff system. But as I found out, it was due to cracked heads that introduced coolant to the oil, slowly and sneakily, ruining the lifter mechanism and got the camshaft to a state where it was just still ok, but not beautiful. But that's certainly not the oils fault. I do recommend this oil to all that keep their cars and trucks for along time and are hoping for extended longevity in their engines.

This is the best oil out there and the only product I use for my Toyota FJ CRUISER Would definitely recommend it ..!

AMSOIL motor oil’s are the best choice for your car period no other oil protects your engine like AMSOIL!!

Product speaks for itself. Just try it. Used Amsoil in my ninja 650 and finally decided to try it in my newer Toyota 4Runner. Shifts are seamless and it’s amazing to feel the difference

I use this as a summer weight oil in my tacoma, it works perfectly. I have been running amsoil for years in my Toyota trucks and they keep going strong.

Greatest syn I have ever used

Works to protect at 0* and 95* I can depend on it always