Customer Ratings & Reviews

November 13 2021 I had my, 2007Harley Davidson Ultra Classic, Dyno Tuned, the technician was surprised how cool my bike ran on the dyno, most bikes he needs to shut down after running WOT for a wile but mine with Amsoil 20/50 V-Twin oil ran a good 20 degrees cooler than expected. I have been using Amsoil in my Harleys since 2002. I started using it in my 2002 XL1200 S 12 second quarter bike, and never looked back. Thank You Amsoil.

I've had my 1998 Harley-Davidson road king classic for 10 years.I started using all Amsoil products each season when I put the bike away for the winter about 3 years ago. I'm very happy with the products. I use 20w50 synthetic oil for the crankcase. Amsoil transmission and primary fluid too.

My motor cycle engine oil runs at least 20 degrees cooler on hot days. Engine runs 200 RPMs lower on cold startup. Engine runs great.

Highly recommended for all 3 holes. No need to purchase separate oils.

I use Amsoil in my Indian Motorcycle. The large air cooled engine puts off a lot of heat, especially during summer in south Mississippi. The engine heat was greatly reduced after switching to amsoil, so you know the engine is having less wear.

Great product especially in the Florida heat. Running it in my harley davidson.

Always use in my bike

my genius Harley Mechanic, David Crane of DC Cycle and Racing uses it in all his clients bikes; therefore i use it!

I didn't ever think I'd be able to afford Amsoil, however, with the price of oil going up all over the place, is not that much different. So now I can finally afford Amsoil, yeah me.

I ride my motorcycle in 115F+ degrees or several thousand miles across the country, this oil really protects the engine!

good oil for the hot weather down here in the summer.

The BEST oil for Harley Davidsons . Runs cooler and quieter

Quality oil. My harley davidson valve train is very quiet now.

This was actually bought for a friend who is converting his Harley trike to Amsoil. He is (was) a diehard Harley owner who only used Harley products. I drive a Goldwing trike and have always used Amsoil products in all my vehicles. He asked me why I thought Amsoil was a better product, and I gave him some material to study. His response was" I guess I learned something....get it! ( He is happy)......

This is the only oil I will use in my 06 Street Glide. I have over 70k miles and running smooth. You can even use it in all 3 holes on your bike. I’ve done this and have lower operating temps.

I was using redline oil and I did some motor work and the AMSoil makes it run cooler

I'm very happy with this oil. I have a 110 with 65,000 miles and it runs cooler and quieter

Awesome oil!!!! All three of my Harley's love it.

I have used this oil in 2 Harleys. Never had any issues. Just can't see using the same harley oil in all 3 holes it just doesn't make sense to me

Harley Davidson maintenance , using for 160,000 + miles, bikes running great