ScottG wrote:
Unless your below about -20 degrees, you don't need the block heater for your Cummins.
I run ours while charging the batteries for a couple hours with the generator while in storage when cold outside. I usually run the engine for a half hour after charging. The engine temperature comes up much faster than when not using it. Plus it helps load the generator when running.
Used to plug the diesel pickup in during winter months as well. Lot quicker warmup and less chugging when cold. Heat for the vehicle is faster than without too. It's there, why not use it?