I have always used a ball diff in my SC6 however I am thinking about try a gear diff. Any recommendations on what weight diff oil works well for a med bite hard packed dirt/clay mix. Track is treated thus the traction is higher than one would think being it has a 80 percent dirt 20 percent clay mix.

Anyhow running mod 7.5t midship 4 gear alum idlers with Yok triple slipper. Again I really have no idea what weight diff oil to start with. Will be using PT diff oil if that matters. My attempted drive style always is to try be smooth on the throttle as trying to be aggressive with the throttle always leads to me making mistakes. Also want to try the gear diff just due to the need for rebuilding do to wear being needed far less often than a ball diff.

Any suggestion would be appreciated.