[E39lolz]

Greetings fellow x1'ers. I picked up a '13 35i last week and couldn't be happier. After owning several used bmw's over the past 17 years ranging from 528e's, various e34 525/535's and e39 grocery getter 525/528's to the mighty e39 M5, I finally got my first ever brand new bmw. @ around 1200-1500 miles I plan on having my indie change out all 4 major fluid's (oil, rear diff, front transfer case and automatic). I tried searching but haven't found anything related to this for the e84 so I hope you guys can point me in the right direction. What is the fluid capacity for the diff, transfer case and the automatic? Should I purchase OEM fluids or use any of the aftermarket brands? Any input would be greatly appreciated. Thanks in advance.