Passon Performance 5-speed

Looks like a whole lotta fat geared Mopars will finally be humming lower RPM's at cruising speed.
I for one will be saving my nickels, dimes and quarters so I don't have to run 3000 rpm at highway speed.

Dumb question as I have not read the MM article yet but what weight trans dope is recommended Inside the case?
Synthetic or conventional?

I know the a-833 seals do not like synthetic.

Jamie did all his testing with synthetic.