[leoni86]

So the dealer has confirmed the leak yet? I would think more a valve cover gasket to leak way before the head starts leaking...I mean only time I've seen heads leak are on really really old bimmers and or if they overheated the crap out of the engine somehow.

Quite possibly when they did the oil service maybe spilled oil when filling and just now seeping down onto exhaust??? It's possible....cause if the head is blowing oil out I would think your low oil light would be on or oil psi warning...