Originally Posted by
mike_d
40wt shock oil seems awfully light for a gear diff. You should be in the 2000 -5000wt range. Might be why it's leaking so badly.
I have never gone heavier than 1000 in my sakura diff and 80wt shock oil seemed just about right. For some reason the sakura diffs seem tighter than the xray or spec r diffs.