how long do you let your car warm up

[supramacist]

It's just good common sense to let the car run for a few before you jet.

[IHateHacks]

Originally Posted by Supra2NR

Its takes me a good half an hour for my car to warm up cuz its spring and it jus snowed in chicago

If it takes that long for your car to warm up, your thermostat is stuck open. Even just idleing the car in sub freezing temperatures it should be at full operating temp within 15 minutes, if you drive the car it should get to full operating temp within 5 minutes. And thats a fact, not an opinion.

I let my car warm up until the stock temp gauge starts to register which takes about 2 minutes. I'm at full operating temp within 5 minutes of driving, even in 30 degree weather.

[mrnickleye]

But its a REAL fact that the entire engine itself is not 'evenly & completely' at operating temp for 15-20 minutes, because ALL the metal parts, oil, and coolant are absorbing the heat. College class: Autoshop 101