It was 49 here this morning and I expected my heater to take a long time to produce some heat. My power-stroke used to take 10 minutes of driving before I even got warm air. To my surprise I had hot air coming from my vents in less than 2 minutes of driving. Will it be this way when the weather gets down around freezing? Or is the block so big on these CTD that they can retain heat for 12 hours?
