How Does AMSOIL Stack Up?

We can all agree that changing your oil is key to longer engine life. Using a quality filter can keep that oil cleaner longer, with extended service intervals and absolute efficiency. I trust AMSOIL to get the very best out of my oil.

I have had first hand experience with  AMSOIL for years. It is the only oil I use in my Chevrolet Silverado with a Duramax Diesel, Honda Accord, Honda CRV, my beloved 32 Ford Roadster, Harley Davidson Street Glide, Polaris XPT, Toro zero turn, Honda snow blower, Yamaha Outboard, and Onan generator. Yeah I buy a lot of AMSOIL but they make it easy and I sleep well at night knowing I have great protection. Enjoy this article and remember Preferred Customers receive 25% off on all products and free shipping on all orders 100.00 or more. Shop now

See for yourself how we compare to Mobil,* Royal Purple,* Lucas* and other leading competitors.

How Does AMSOIL Stack Up?

There’s no shortage of companies that make bold product claims. Precious few, however, back up those claims with independent, third-party test results.

Our customers can be confident that they’re using a product that performs as advertised and delivers industry-leading protection and performance.

To see the proof for yourself, visit the updated Performance Tests page at Here, you’ll find results of industry-standard tests performed by independent, third-party labs that show how AMSOIL products stack up against leading competitors and the toughest industry and original equipment manufacturer standards.

For example, look at how well AMSOIL Signature Series Synthetic Motor Oil protected bearings after 100,000 miles of head-to-head testing at an independent lab.

Viscosity Breakdown













Our diesel oils also perform exceptionally well. Independent testing shows they deliver more protection than required by Detroit Diesel’s* standard, a leading name in the diesel industry.


Viscosity Breakdown













The Performance Tests page includes results for motorcycle oil, snowmobile oil, gear lube, fuel additives and more. See for yourself how AMSOIL products stack up against leading competitors like Mobil,* Royal Purple,* Howes* and Lucas.*

See the Results

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are AMSOIL-engineered for use in the applications shown.

Preferred Customers receive 25% off on all products and free shipping on order 100.00 or more. Shop