Idleing in cold weather
We have a 1999 Ford Windstar minivan. DH insists on running it while we snow-blow the driveway, maybe 20 minutes or more "to get it warmed up", not to go anywhere. I've read that it is not good for the catalytic converter to idle the engine for more the 10 minutes or so. I want to scream. Am I over-reacting?