HostelofMaine

HostelofMaine t1_j6mz7oo wrote

Huh.. I'd strongly recommend not starting your car if you don't need to. Cars accumulate most of their wear during cold starts, and significantly more so during these kinds of temps. The oil won't adequately warm up by just idling unless you did so for an hour or so (coolant warms up significantly faster). Also, starting a car when a battery is very cold is going to wear out the battery much more than letting it sit and warm back up after the cold spell. The absolute best thing you could do would be to put your battery on a tender/charger. Also make sure your coolant is topped off and is at least 50% coolant (freezing point -36F).

If you do have to go somewhere during a point where it's in the negative teens or lower, I would recommend a short warm-up period (which is not normally necessary even in cold weather).

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