How often should I change my tranny fuild and filter and how much does it take to fill it up? Also how about the differential?

 

Don't remember what it said about them in the manual about that m6 trans, but the rear I believe it said every 50k.
I saw someone on here suggest every 50 for the trans also. I changed mine at 90k and the fluid was a little dark not too bad. It obviously needed it though.

It took me about 3.5 to 4 qrts to fill the trans up, but the pump I was using to put it in there didn't suck it all out of the qrt. I might have actually been on 4.5 but just fill it till it starts to run back out of the fill hole.

For the rear it took 1.5 qrts + your limited slip lube. Fill this in the same fasion.