Kmc63

So the last month white smoke has been coming out of the exhaust after sitting a bit. When I took it to the dealer for service they said it was moisture, but before the service I got the add oil light which led me to believe it could be burning oil or coolant or something worse.. opinions?

Ludedude

White smoke is typically coolant; oil tends to burn with a more bluish hue. If it's after the car has been sitting a while, the dealer may be right that it's accumulated moisture in the exhaust that's boiling off.

Amr_c63

has it ever run through your Head that it might be the bolts ?👀

ItalianJoe1

2013 has the updated bolts.

How much smoke are we talking about? Does it dissipate quickly like steam?

Amr_c63

did not see that , yes your in the clear on that end!

Jasonoff

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I would first suggest trolling through the other threads about this. It may be more helpful, because, way back when it was first asked once or twice people were way more interested in responding. But now, not so much...

Head bolts are fine, it's not blue so likely condensation just like the dealer told you.

Mort

Definitely, might be, something worse.

Kmc63

sometimes a lot sometimes a little and it stays white and and floats away unlike how condensation would act.

bhamg

Considerable discussion on this over the years. Likelihood IMO - 99% chance it's a normal condition. I've had it and my motor is in superb condition mechanically.

https://mbworld.org/forums/search.php?searchid=19639701

bhamg

Sorry, evidently the search results don't appear. Try searching "white smoke startup."

604 C63

I would suggest we get enough trolling through the other threads.

bhamg

Oops, never saw what Jasonoff posted.