My 2003 2500 HD D/A came with a front grill cover to keep out the cold in the winter and I've read others talking about problems keeping the engine warm in the winter.

Could someone explain why Diesels are notorious for running cold in the winter vs. gasers. Why don't the thermostats work the same way? Or is there really an issue....?

My 6.6 in cooler weather keeps 191 deg, and the cab seems warm enough for me, what' up?

Thanks,

-Eric.

First thing is look at the size of the radiator you have. When that water is cold there is a lot of water to warm up.

<LABEL id=HbSession SessionId="3187592909">Diesels just don't make as much heat as a gasser at idle. Nature of the beast!</LABEL>