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I think the ambient temp plays a big role here. Fluids do behave differently in cold and extreme cold. Hell, tcc lock up is disabled till a certain temp. I'm not one to wait for heat but I don't turn the key and slam the gas either. I don't see an issue with idling. Very few people keep a car long enough to have an issue with cylinder wear. I remember when we were living in that polar vortex nonsense. Trans in gear and transfer case in neutral, really helped with the trans cooperating with my gear choices. 3rd pedal ftw!
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