Originally Posted by Rustybdd881
Do you think using the Castrol Syntec 5w50 oil will help with the whine vs polaris demand drive oil?
Don't put Demand Drive Fluid in the tranny, its made for the Hubs.
I use shell Synthetic snowmobile chain case oil in the tranny, it does not really state its Viscosity weigh but the internals of the Polaris ATV tranny is almost the same as there sled,with a "chain" being the dominant part ,not cogs.
I can tell chain case oil is thicker then motor oil.