3.0 engine ran w/o oil cap - need help!
I take the heat for this one - I didn't secure the oil cap after adding oil. Ran fine for 3 starts (including 60 miles) but after sitting overnight in single digits it barely started, blew a ton of exhaust and quit. I was able to start in again once (with the cap on); it could barely idle, made a ton of unhappy noises. It did smooth out when given some throttle, but then died.
The vehicle is a 06 X5 with the 3.0 liter engine, I suspect there are a whole lot more gear heads on this forum for this engine than the X5 forum (that is meant to be a compliment!). Where should I go from here?