Customer Ratings & Reviews

Engine runs quieter

I’ve been using Amsoil in all my Harley’s since 2004. I believe this is the best oil you can buy.

Use Amsoil in both my Harley Road King Classic and my Daughters Sportster, wouldn't use anything else. Had trouble using Harley Davidson Synthetic, seemed to burn about 1+ quarts between changes. Not any more with Amsoil..

No muss, no fuss, great performance and peace of mind. Changed my oil every spring, ride all spring, summer and fall on the twin cam and Evo, no oil related failures. (Even the cam chain tensioner didn't look all that bad on the twin cam, replaced it though at 30k miles because I was in there making sure everything was on the up and up)

good stuff as always. wont put anything else in my 2014 ultra classic

I have always used this oil in my Road King custom and wouldn’t use anything else. As my bike is air cooled I like the idea of a synthetic oil versus a standard mineral oil. I feel it performs better especially in hot weather or when pulling my tent trailer.

I have always used AMSOIL SAE 20W50 in all applications of my Harley to include the transmission. I never had an issue with the SAE 20W50 but since AMSOIL came out with the specific transmission fluid I have been using it and I have even more confidence in the performance. I will use nothing but AMSOIL in all my vehicle applications. I have 4 Harley, 2 Big Dogs, 2 Trucks and 1 Car and they all use AMSOIL which is long lasting and the confidence in protections no other oil can give.

Great product I will use it again.

Works great, I run my bike hard for long periods of time between oil changes AMSOIL keeps my 2016 Harley Roadking preforming cool and efficient with improved gas mileage. Highly recommended this product. They also have outstanding shipping services orders arrive in most cases in 3 days. 😁

Although not recommended by any oil manufacturers in mixing weight in the engine oil, I am running half SAE60 in routine oil change. HD air-cool engines have larger tolerances in the internal working mechanism, this thicker oil works well for me.

Wouldn’t use any other product. Keeps engine running cooler.

This trans fluid is amazing within a short distance I could feel the deference in the way it shifted and finding neutral was much easier and just got better with time.

Its the 3rd case ive bought and am happy with its results .

I purchased my first Harley in 2008 and have used nothing but V-Twin since and Ea filters since. My bikes have never engine transmission problems or run too hot.

Switched from Victory (Polaris) branded oil to this Amsoil product 3 years ago. The bike runs a little cooler and oil seems fine throughout riding season. Haven't had any issues with shifting either as the gear box on these bike share crankcase oil.

Great oil! Great company! Oil I can trust!