Haven't noticed any real difference, but like that it's Primary specific. I figure, it only holds one quart, you might as well use the best you can get...
Have been using AMSOIL in my 2006 HD Fatboy since I purchased it in 2009. I also use AMSOIL in my 2007 Tundra. Oil in HD gets changed every 5 to 6 thousand but has gone longer but with AMSOIL I don't worry. I order my V TWIN oil change kit every winter so when spring riding weather hits I can have a fresh oil change ready to go.
Been running this along with trans fluid and 20/50 oil in my 21 year old Harley with 98,000 + miles. Change every six to eight thousand miles. She’s running like a champ - No leaks and no major repairs, can’t ask for more.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Harley Davidson
By 
Michael, 
a 
Verified Buyer 
from 
South Carolina 
on 
February 18, 2021
Amsoil is the only oil that I use in my Harley Davidson
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Keeping my Harley Running good
By 
KEVIN, 
a 
Verified Buyer 
from 
Salem Illinois 
on 
January 21, 2021
Have been using this in my Harley Davidson. Switched to it due to riding my bike on long distance rides (1000 plus mile days). Really love the way this stuff has worked so far.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
First fluid change 1000 miles
By 
Bino, 
a 
Verified Buyer 
from 
On my bike 
on 
January 18, 2021
Solid product have used for many years
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
By 
KRISTOFER, 
a 
Verified Buyer 
on 
December 21, 2020
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