My cousin bought one of the first Dodge trucks with the Cummins engine and he has owned them ever since. He is very religious about letting his truck warm up for at least 5 minutes before going anywhere, then letting it idle and cool off for another 5 minutes before shutting it down.
I don't agree with warming it up. I feel it is better for the engine and it will warm up faster under a slight load going up the road than sitting and idling. Now I do keep the throttle low and let it shift at lower RPM till it gets warmed up. I do think letting it run for a minute or two after coming off the road is a good idea on any turbo charged engine just to cool the turbo down.
What do the rest of you diesel owners do?
I don't agree with warming it up. I feel it is better for the engine and it will warm up faster under a slight load going up the road than sitting and idling. Now I do keep the throttle low and let it shift at lower RPM till it gets warmed up. I do think letting it run for a minute or two after coming off the road is a good idea on any turbo charged engine just to cool the turbo down.
What do the rest of you diesel owners do?