I got hooked on this fullsyn/tranny fluid about 10 yrs ago, I’d kinda tweak if I couldn’t find any locally. Foolish me, getting it straight from Amzoil nowadays.
Nothing better for a gearbox, smooth shifting all the way til it’s time to drain it.
My Harley-Davidson trike does not go into neutral as easy it did with the previous brand of oil I was using
Bottom Line
No, I would not recommend this to a friend.
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5 star rating
Nothing Better
By 
SEAN, 
a 
Verified Buyer 
from 
Willamette Valley, Oregon 
on 
August 10, 2025
After switching from Harley’s promotional Fluid, I have easier and quieter shifting. There’s nothing better on the market. Use it, you won’t be let down.
Other than mobile one 20w50 for my engine, Amsoil transmission and primary fluid are the only others I use. Amsoil transmission and primary fluid are the best on the market if you have a big twin Harley this is what you ought to be using
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Trans fluid
By 
JIM, 
a 
Verified Buyer 
from 
South Carolina  
on 
August 05, 2025
Great product for a fair price
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Great product
By 
HERB, 
a 
Verified Buyer 
from 
British Columbia 
on 
August 04, 2025
Been using Amsoil for years and just love there product.
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