How long do you guys wait for the car to warm up before you drive a little more aggressively? In my AMG, it had a digital read out to where I could see the temp rise to the proper temp. In my old M, the yellow/red line would slowly creep up to normal range. In this car, it seems to take a while to get the needle to move at all. Granted it's been balls cold out since I've bought the car.
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