Customer Ratings & Reviews

I have been using this oil in my motor for about 7 years. I think it's the best oil for my motor.

I use the synthetic oil in the crankcase and primary in bot of my late model Harleys. It seems to run cooler than the other oils I have used.

In a Truck

this oil is great stuff, I use it in my vintage bikes, a 68 BSA and a 70 triumph Bonneville. It works good in these bikes.

Have used many synthetic oils. Amsoil is top notch. Far quieter than other oils as far as engine noise. Amsoil Tranny fluid outshines the competition with smoother shifting and ease of finding neutral. If you ride a Harley, you know what I'm talking about.

This oil makes the bike run smoother and quieter. I like that I can use it in the Engine, Trans, and the Primary. I use Amsoil in all my vehicles. Nice to change oil and filter once a season and still get great protection.

Years of use = PEACE OF MIND, hot n cold year around in CO

I bought the 20W40 for use in my Victory Cross Country. The top end is noticibly quieter. The oil change is good for a year, or 10,000 miles. I'm happy!

Becoming a preferred member has made this top grade oil not only affordable, but because of its longevity it is a much better value than other synthetic brands!

I have a motorcycle repair shop and I am switching to Amsoil. Superior product and better priced. I won't use anything else in my Harley-Davidson. Another advantage is I can deal directly with Amsoil, can't do that with other manufacturers. Overall a fantastic product and company! Order online and it comes to your door.

This is my first time using Amsoil. Great product.

I use Amsoil in all my vehicles Dodge Ram an Harley's

Good oil. Used it on my motors for years. Have a 07 Harley dresser. 98,000 miles. Used in primary and tranny.

Have used it for about 10 years in multiple Harley Davidsons that I have owned, as well as put it in other's bikes that I have serviced. Not about to change what works.

I use Amsoil in all my equipment, tractor... compressor... car....truck.....lawnmower...bike.

Great product. Use in all my bikes

I purchase this product for friends of fine that use it in their Harley Davidson motorcycle. They tried other products but Amsoil is the only product that works to keep the engine cool, smooth and protect against all elements.

I changed out my out Harley Davison engine oil with Amsoil. Immediately the engine ran quieter. The feels like it runs a little cooler as well.

Great product...AMSOIL I use it in everything... Trucks, Motorcycle... Only oil I use, if U value your vehicles, Use it...

As always really like the Amsoil, I have changed all my vehicles over to it along with my motorcycle and will be switching my tractor over on the next change.