husky drvr
Platinum Level Sponsor
Steeman01,
Yes, too heavy. More importantly, the sulfur compounds in gear oil can combine with moisture to form acids that will dissolve the brass synchro rings. If you want to use a thicker oil, then use SAE 40 or SAE 50 engine oil. In terms of viscosity, the SAE 50 is near the same as your 80W-90.The thicker oils will work, but can cause cold shifting to be more sluggish and may not lube the needle rollers very well until warmed.
