Was sceptical about synthetics, did my own research. Bought Amsoil due to my research. Put it in all 3 holes on my 07 Harley ultra classic. Beyond happy. Quieter transmission and lower running temps over conventional oil.
I live in a climate with triple digit temperatures. This product helps to keep the engine running smooth on hot summer days and might contribute to cooling.
Bottom Line
Yes, I would recommend this to a friend.
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By 
mike, 
a 
Verified Buyer 
from 
que can 
on 
April 28, 2018
I have a 2004 Heritage Softail Classic with just over 60,000 miles on it. I've always used Amsoil 20w50 in the transmission, motor, and primary. I switched from 20w50 Amsoil to The V twin primary oil this year. I feel it gives better protection to the inner workings of the primary.I also switched to Amsoil transmission fluid. I still use 20w50 Amsoil in the motor.
I HAVE AN OLDER HARLEY, THE BIKE USED THREE DIFFERENT FLUIDS FOR ENGINE, PRIMARY, AND TRANSMISSION, NOT THE ONE FLUID FOR ALL. THIS PRODUCT MEETS MY REQUIREMENTS FOR THE PRIMARY AND DOES AND EXCELLENT JOB.
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