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Diesels need plug-in electric engine block heaters at anything like those temperatures as well. This would be the same thing.

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No they do not. They need winterized diesel fuel (kerosene added), but that's it. -30C was a "nothing special" for BMW N47 engine to start. -37C is a pour point of 0w40 engine oil, but higher temps are fine in terms of cold engine startups

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