I use Amsoil fully synthetic products for all of my 3 hole fluid changes. I have a 2021 Road Glide Special and the bike shifts so smoothly and quite now. The occasional chatter and tick from the top end of the engine are long gone as well. Excellent choice.
This product, as well as ALL AmsOil products I have used for last 30+ years, is excellent for Performance and Reliability. Nothing else goes into my iron 2 wheel baby!!!
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
The Best
By 
STEPHEN, 
a 
Verified Buyer 
on 
October 09, 2022
By 
DAN, 
a 
Verified Buyer 
on 
September 01, 2022
Would be swell if they could Include an oring for the drain. And a tip to the wise make sure that you crack the bolts on your primary cover first before you drain all your fluid case you have an issue or strip one
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Primary fluid
By 
MATT, 
a 
Verified Buyer 
from 
Kingston , On. Canada  
on 
August 22, 2022
By 
JC BX NY, 
a 
Verified Buyer 
from 
New York  
on 
August 16, 2022
Definitely better than stock SYN 3, lowered my overall engine temperature. If you want to decrease your engine temperature definitely try changing all your fluids to tha Amsoil products
This is top shelf primary fluid. Here in Florida heat is always a concern and this is the best for the cruel conditions here. Running 95 for 2 hours no problems with any breakdown.
The AMSOIL Synthetic V-Twin Primary Fluid is awesome for my primary chains long life and for the clutch, and primary chain tensioner. I never believed the engine oil is good in all three holes on a Harley Davidson motorcycle. I use fluids specially designed for each area on my Harley Davidson motorcycle. I plan to ride my Harley for many, many more miles. I highly recommend AMSOIL Synthetic V-Twin Primary Fluid to anyone who want the best performance out of their Harley.
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