I was thinking the same thing. "... boy that escalated quickly "
Some steam from the exhaust and go straight for thinking about new turbos or a new head.
Just this past couple weeks I was investigating the same thing. After 5-6 days of sitting I would get a large cloud of smoke at start up. But never has it hinted of oil, coolant or fuel.
But, when I took it in for the drive shaft recall I asked them to look it over and they kept it sitting long enough to check out the smoke on start up.
Maybe it is a developing issue, but none of us feel any concern over this. Lots of water/condensation can sit in these pipes and cats.
I read a post a while back where someone poured about a gal of water out of their exhaust when they took it off to do some work (not an X5 )
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