Customer Ratings & Reviews

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.

This is what I run in the primary of my 117 M8. I’d say it works great and I have absolutely no trouble finding neutral as some people say with these bikes.

AMSOIL 100% Synthetic V-Twin Primary Fluid is the best.I only buy the best....

I was using the 20/50 oil in the primary housing, and it worked very well indeed. However, upon switching to this dedicated formulation in my Harley, the clutch feel and operation is improved, smoother engagement than ever before. Chain case noise seems reduced a bit, but cannot say that for certain. AMSoil, in my opinion, offers the very best lubricants available for Harley Davidson motorcycles. I have never heard anyone unhappy with these products.

In my opinion the best oil you can use in a Harley Davidson

Just switched my 15’ street glide special to all amsoil, and can already tell the difference in performance. I will forever be using amsoil instead of anything Harley.

My bike is a little older(16 years)but the clutch is loving this oil.

My primary was making the slightest noise at idle. The bike had sat unused for a couple years. Changed to this oil and WOW the noise was gone and the clutch is super smooth