Diff oil?

[Carlos717]

Hi. I'm new to short course racing so could some one explain diff oil weights to me please and which set up would be best for my 4x4 sct which I race on a low traction slippery surface. Thanks in advance :-)

[Carlos717]

Newbie question again! What is the best grease to us on the gear that's on the diff and the gear that attaches to the shaft?