eliminated grabby clutch ........ so much better that my passenger noticed the difference.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Primary oil
By 
JAY, 
a 
Verified Buyer 
on 
September 26, 2026
No problems
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Shipping
By 
JAMES, 
a 
Verified Buyer 
on 
September 21, 2026
Great products. I do recommend your products to Everyone I meet or whom ask me what are the best products to use on ones motorcycle. Would like to see Freeship more often for some of us smaller users. I rarely need to order $100 plus worth of Amzoil products for my motorcycle. I contract as a MotoVlogger and a motorcycle product reviewer. I do occasionally ship Amzoil products to various locations in my travels and only require 4-5 quarts at a time of your product.
Thank you for your time.
I switched over to Amsoil Primary fluid after 20k miles of using 20w-50 in all three holes. It feels like my clutch grabs a bit better, but, I can definitely find neutral much easier now. Maybe it's because this is a straight 50w. Either way, this is a great product and all I'm putting in my primary now.
By 
WAYNE, 
a 
Verified Buyer 
from 
Alberta  
on 
September 14, 2026
So far so good! I've ran a few different fluids in my primary on my softail.. i run all other amsoil products so I figured I'd run the primary fluid as well..
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Bon produit
By 
RENE, 
a 
Verified Buyer 
on 
September 11, 2026
Helps keep your clutch running smoothly
Very good product
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Great product
By 
KEN, 
a 
Verified Buyer 
on 
June 27, 2026
Only oil I put in my Harley
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
22 Road Glide
By 
DAVID, 
a 
Verified Buyer 
on 
June 20, 2026
Changed the HD heavy fluid to Amsoil V-Twin Primary Fluid. The shifting seems to be much better now. Transmission fluid changed at the same time. transmission was hanging up before. Now is smoothed out.
I switched to Amsoil as I don't believe a motor oil (20W50) should be used as a primary drive lubricant. As I mentioned, personal preference, I want an oil specifically developed for clutch application, my first time using Amsoil and I have no idea how to tell if it serves the purpose. Bike shifts ok, will have to wait and see.
This is a carousel of Shop by Equipment slides. Use Tab to navigate through the carousel or the Next and Previous buttons. Use Enter to select a slide.
Thank you for visiting www.amsoil.com. Certain parts of this website may not function with Internet Explorer. To continue shopping with us, please update your browser using one of the options below.