It doesn't get too cold in Savannah, GA. That said, on cold mornings I seem to have developed a habit of letting the engine (coolant) warm up to 60degF before putting it in gear and driving off.
Both the tranny and oil fluids have heat exchangers connected to engine coolant. This warms those fluids up quickly.
My tranny temps are always lower than coolant temps. So maybe the tranny heat exchanger is more of a "warmer" then a "cooler."
The ED runs hot. It takes a little getting used to. My coolant temp gauge is dead center at 224-226deg. So it's not 190deg coolant warming up tranny and oil, it's usually 205-215deg coolant. Also, the ED has louvers in front of the radiator. There is supposed to be some aero benefit to this. The louvers are only opened as engine temps require. So maybe on short hops in the winter there isn't much air running thru the radiator.
