Motor flush safe for the X?

[ProfessorX5]

The previous owner hadn't done an oil change in a while, so the oil is pretty dirty, enough to give me one yellow and one red light on the oil service indicator. I'll be changing the oil in a couple of days, and was wondering whether I ought to do a motor flush, and have the oil pan cleaned (I'd do it myself, but it's too cold to be lying on a concrete floor :P).

Are the usual motor flush products appropriate for BMWs? Total noob here. :P