[wagonman76]

I only warm mine up enough to get the oil pressure up (I have a gauge) and till any oil starved parts like lifters quiet down. Usually 1/2 minute when its cold. Usually the power steering pump is what makes the most noise. But I do take it easy on the road, of course we all probably do while ecodriving plus its safer in the snow. It gets to -20F quite a bit here and Ive never had an engine that burned oil or knocked or anything. They always run great to well over 200k. By then the rest of the car has pretty well rusted out beyond reasonable repair.