Customer Ratings & Reviews

excellent primary oil. About the best on the market

This oil is really good for your harley

Switching from Harley’s promotional fluid to a real synthetic primary fluid, Amsoil provides smoother clutch, quieter primary and better fuel economy. Use it, you won’t be let down!

This seems to make less noise in my primary than the fluid it replaced. No clutch slipping. My 2024 Low Rider S makes plenty of power and torque. It will easily pull the front tir off the ground. I know my bike is protected.

I have been using Amsoil products in my 1998 Harley-Davidson Road King Classic FLHRCI for 10 years now. I trust their products completely.

I've been using Amsoil Primary Oil for years now. It does great at protecting the internal primary parts. Would recommend it to others.

It just feels better when changing gears

Excellent for my 2012 FXDWG !

Shifts so much better

My primary is cooler and quieter now

I've been using AMSOIL primary oil in my Sportser for some time now. It works better, cooler and better clutch response. Mechanics at Harley also use it in their bikes...they recommend!

Harley recommends 20/50 in the primary drive. I prefer to run amsoil primary fluid

Quality product, excellent customer service, and communication.

Very good product

Nothing better on the market

Good oil better than HD

Great oil for my Harley Davidson, runs smoother, priced right.

What can I say it’s a awesome product I was a Motul guy for a long time but now I am Amsiol from now on.

AMSOIL is the best on the market! Shipped fast and received quick!

Great stuff. I prefer an oil designed for the primary as opposed to an all-in-one product from Harley.