When it's cold outside, you know you should warm up your engine, because it's the right thing to do. But is it?

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Read in a car magazine many years ago that it's only necessary to establish you have oil pressure before driving.
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I start mine and go, but I monitor oil and transmission temps and wait until they are in the normal rangebefore I get on it hard.

 

^ What Spectre said. I have the performance package so the oil pressure gauge is right there at top center dash, and it can take a long while for the oil to warm up and the pressure to go down to midrange. Just keep a light foot on the gas until it's ready to run.