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Winter pile-ups; to idle or not to idle my old diesel?

Asked by majorrich (14741points) February 14th, 2015

With the horrid winter weather, there have been a rash of accidents that hold up traffic for hours at a time. Thankfully I’ve not been in one, but wonder with my old (1978) diesel car would be better off to let it idle and keep me warm. Or shut it down and restart as traffic moves using the blanket and such I’ve equipped my car with. Given how heavy the load is on the battery to start, I fear a limited number of off and on cycles I have, but am cognicent of the pollution and fuel savings. For that matter, even with gasoline engines, which is better?

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