Hey guys. New Dyna owner here. I came from a Vrod that used the 20w50 for everything.
I want to stick with Amsoil for my bike as I've used it and like it but not to sure what Amsoil product (other than the 20w50) is available for the primary.
I've used the search on here and can't really find my answer.
What is everyone using in their primary??
If Harley makes their Formula as an option for the primary and tranny, why turn around and say you can use Syn3 in all 3?
Is the 20w50 (whether Amsoil or Syn3) heavy enough for the primary?
Should I stay away from Synthetics for the primary all together?
Sorry for all the questions but I was curious and want to run a product in there that's doing what it should and gives me piece of mind.
Thanks

 

Here you go... https://www.hdforums.com/forum/oil-a...ted-topics-30/

 

Type F ATF for me...........works great.....after all an automatic trans is full of clutch packs..........

 

I use Amsoil 20W-50 in all 3 holes.

No need to make things more complicated. This is what Amsoil recommends & I agree for a number of reasons.

 

thanks guys..
on a side note, has anyone ran the Amsoil Super Shift in their primary? It doesn't have the friction modifiers that some say are the reason to not run synthetic in the primary?

 

im a royal purple fan, costs more but its a better lube from my point of view. max cycle 20w50 for the crank an primary, and max gear 75w90 for the trans