- Mar 1, 2007
I am about ready to start my buddies 850 after doing a top end job on it. I was checking all fluid levels before startup and noticed something wierd?? The Clymer manual I have says to use 20W-50 oil in the primary chaincase. When I checked his it appears to have transmission fluid in it?? Whaaas--up?? Is it OK to use transmission fluid in the clutch primary or did he screw up and put the wrong fluid in?? If he did should I drain the primary completely and clean everything before adding 20W-50 or can I just remove the primary cover and re-install it with the 20W-50?? Thanks for all the great info!!