[200q20v] Oil specs

[Max Conover]

Ok this should be easy. I want to have a local garage change the oil in
the trans/diff and rear differential. The owner's manual states what
oils to be used and I want to follow those specs. (no super-duper
stuff). My questions:
1) Is the trans and the diff up front filled all by one plug ?
2) what are the capacities of all the units
3) what oils can be used, Castrol brand perhaps ?
4) where is the drain plug in the rear diff ?

Thanks,
Max