Help with Fluid Changes

[Emo]

I'm in the process of ordering supplies for my upcoming fluid changes, but I have a couple questions:

1. I know the capacity for Auto tranny is 9Liters, would anyone happen to know the capacity for a Manual? I know on my e46 it is 1.1qt (manual) vs 8qt (auto)

2. What oil is recommended for a diffy change?

3. I'm going to hit 50K miles soon, What other maint items should I concider doing?

I been overseas a few months now and want to show my cars some love when I return in a couple weeks.