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.
First time I have ever changed my own Primary fluid.. on my 2012 Road Glide.. It is now so much smoother to changed gears.. much smoother clutch..and should have did long time ago.. SYN oil from harley can’t hold a candle to this product.. Thanks..
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great product
By 
JOE, 
a 
Verified Buyer 
on 
April 29, 2026
I use this on my Fatboy Lo S awesome results
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Noticeably quieter primary
By 
RICHARD, 
a 
Verified Buyer 
from 
Los Angeles, CA. 
on 
April 29, 2026
I installed this in my 2022 Road King Special, oil cooled M8 after the I put in the V-twin motor oil and I heard the ticking sound in the heads get lower. This primary fluid is thicker, more viscous than the Syn3 I had been using. I didn't notice the whirling sound in my primary until I put this in and it nearly disappeared. Between the 2 fluids, all I hear is exhaust at a stoplight now.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Smooth
By 
PATRICK, 
a 
Verified Buyer 
on 
April 28, 2026
Makes the clutch smooth
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5 star rating
service my bike
By 
MEL, 
a 
Verified Buyer 
from 
auburn hills, mich 
on 
April 27, 2026
By 
DAN, 
a 
Verified Buyer 
from 
American Canyon 
on 
March 18, 2026
Oil Works great, When On the Run For The Wall 2025 on my 2020 Harley Road Glide Limited and loaded it down and drove over 6800 Miles on a fresh oil change, and Oil still looked dam good. Only oil I will use on my motorcycles, Cars, Truck and boat. Love It
Thanks for a great Oil
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Best option
By 
ROBERT, 
a 
Verified Buyer 
on 
March 18, 2026
I could tell a difference by the second shift. Smooth and quiet , unknown long term results
I use this ik once of factory oil for my Rekluse clutches in all three of my Harley’s. It meets same jaso ma2 which is what Rekluse prefers with their oil.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
As Usual
By 
SAM, 
a 
Verified Buyer 
from 
N Alabama 
on 
January 11, 2026
As usual, easy transaction and fast shipping!!!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
.
By 
WILLIAM, 
a 
Verified Buyer 
on 
December 30, 2025
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