Customer Ratings & Reviews

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

Great oil. Highly recommended!

Takes away that chain slap sound, clutch is smooth and easy shifting. It’s the best.

Great product

Works as advertised!!

Great product better than just running oil.

Was easy to order and get the right product. Bike runs smooth with Amsoil. Decided to try in my Harley after reading reviews. Works great.

Used this on a 2006 Heritage Softail. Great product that I trust.

This is a great product, this oil doesn't holds together great in the primary case.

first time using this seems fine

Quite primary now

Changed from recommendation from the factory. Within the first 10 miles the slipper clutch started working again. Neutral finding was easier. Love all 4 products I purchased .

The main reason I recommend the Amsoil primary fluid is because it eliminated my clutch chatter. Clutch would start to chatter using screaming eagle oil after about 2500 miles, after changing to Amsoil I no longer have any chatter. Good beyond 5000 miles.

Was time for an oil change, and have been using AmsOil products in my truck since 2016. I've tried other oil products in my truck and have not liked the results. Harley-Davidson does make a good product for their bikes, AmsOil just does a better job especially during warmer climates or heavy traffic when oil breaks down faster. I have never tried AmsOil Primary Fluid and thought I would give it a try.