[WHYME]

What type of fluid do you recommend I refill the chaincase with?  It smelled like rearend(auto) lube when it came out. Thanks.

 

[rabyerma]

Chain case oil from the dealer.  This is an area you don't want to skimp out on..

 

[mike800z]

i have allways used MOBIL1 syn.gear oil and have great luck. it flows down to -50. plus its cheaper than dealers stuff. i dont know about yamahas bearings but on ski-doos the bearings in the chain case are sealed and all you are doing is lubricating the chain and the gear oil works great for that