I use "Shell Synthetic Snowmobile Chain Case Oil",but no where on the bottle does it say what it's viscosity weight is. I,m curious because I use it in my Polaris 500 Sportsman ATV tranny since its main internal component is a chain as well.
I use Klotz synthetic, and it's like gear oil. It sticks to the chain/gears and works well.
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month! (Lost in fire 4-7-13)
1992 Ski Doo Mach 1 original 2006 Ski Doo MXZ 500SS
1999 Ski Doo MXZ600 Webmaster Evergreen Valley Snowmobile Club SledNH.com Moderator