Just wondering if I can use the same oil as my transmission (I use Subaru Extra-S) in the rear diff?
Car is a 6 speed Manual 3.0RB, rear diff appears to be an LSD since both wheels spin in the same direction when I spin one side by hand while raised.
I imagine if it's a viscous style LSD it would use the same oil as the transmission since the center diff is a viscous unit and it shares the transmission oil...
If it is a clutch style LSD it would require specialized LSD oil, right?
Any help would be much appreciated, Thanks!
