Customer Ratings & Reviews

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.

Was blown away, with the fast delivery. And free flashlight with purchase. Yes the flashlight is like from the dollar store, but who doesn't like free stuff. Really like how the oil came with stickers, you already know ill be sticking them everywhere. With those simple gifts, ill only be buying from Amsoil

Nice smooth clutch operation!

So this is my first time using Amsoil in my harley at all I was getting a clinking noise and shifting started to get a little tougher I've always have used regular motor oil 20w50 in all 3 holes but I tried this to see how it works and what all it did it was a night and day difference shifting became smoother less noise all around im happy with it so far so we will see the longevity of but as of right now highly recommend for your Harleys primary

Only use primary case oil In my Harley Great oil.

I have 49K miles on my 2007 Harley Davidson Fatboy motorcycle. In all those miles and years, I have always used AMSOIL Synthetic Primary Fluid. At every fluid change interval there has been very minimal wear metal dust on the drain plug magnet. The primary is very quiet while in operation. I highly recommend AMSOIL Synthetic Primary Fluid.

Smooth

I have been using it since it came out. Works very good.

Another great product