Customer Ratings & Reviews

Using this and extended life oil filter on a 2012 Honda Crosstour since it's first oil change. Wouldn't use anything else.

I've been using Amsoil for a couple of years already and I've been very happy with this product. My engines feels smoother and quieter than before plus I know I'm getting the best protection for my vehicles.

Is the best oil on market

First time using Amsoil. All my oil changes before I used Motorcraft in my 2014 mustang. With Amsoil my car starts easier, idles better, and seems to better performance wise. I will never use a another oil in my mustang.

have used Amsoil in ALL my equipment costs a little more but I save in the long run don't have change oil as often my chrysler pacifica calls for 0w 20 will be able to run this for about 15-16 thousand miles which about a years worth of driving for me I totally believe in Amsoil products

I notice a difference in the way my engine runs; very smooth. And this product is not much more than the high quality synthetics like Mobile One but much better. Glad I found out about these Great products.

This is the only oil I use in my dodge demon & hellcat & srt durango. It’s that good!

The best product and recommended by several mechanics!

Engine runs smooth and quiet. Never an issue. Products are delivered quickly and of top quality. Every engine I have run it in from Corvettes (5w-30 Sig. Series), to daily drivers (0w-20, 5w-20, 0w-30, 5w-30 all sig. series) and outdoor power equipment (small engine 10w-30) I have been impressed. Smoother, quieter, oil temps. slightly cooler and longer drain intervals make it worth while.

For my first time ever buying and using amsoil, I've got to say, I'll probably never go back to anything else again. Best motor oil I've ever bought!

My engine ran sooo much smoother. This is my first time using it, and i won’t ever use another oil. High quality for sure!

I've been using this oil for over 10 years in all my vehicles. One of my Hondas now has over 453,000 miles on it. I change the oil every 15k miles (due to the oil filter interval limit) and my car's engine is in Excellent shape. Highly recommended.

Have been using the Signature Series for a long time as they protect and extend my engine's oil changes. Never an oil protection failure when you use the best.

I absolutely love this product. The signature series line from Amsoil sets the bar for premium synthetic oil. I will never settle for anything less. Try it out, you won’t be disappointed. I guarantee it.

Best oil you can buy

The GT500 has a Ford B-Spec requirement, which in a 5w50, really limits you. This oil meets and exceeds the B-Spec, as it's C-Spec. Considering how little I drive this car, it will be an annual oil change far below the 25k mile range.