I couldn't find one. All my w210s start up in the cold without issue and no smoke. I'd like to make it easier on them to start though in the winter wben it's cold.

Where are they at if they have them.

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k