Should You Warm up Your Engine by Letting Your Car Idle in the Winter?

I called half a dozen mechanics across half a dozen states and got recommendations that ranged from 0 seconds to 10 minutes.

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Warming up your car in cold weather can damage the engine

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Should You Warm up Your Engine by Letting Your Car Idle in the Winter?, winter auto

Let there be heat: How long should you plug in your car, car plug

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