[Diesel_Dave]

On another note I played around with the fan a little yesterday. After work I went out (with the engine cold), popped the hood and started up the engine. The fan came on immediately, but then went off after 1 min or so. That's a good sign. One of my concerns was that my fan was on in the first few miles of cold start, hurting my warm up times.

My understanding is comes on initially to move the fluid around where it needs to be and then turns off untill things get hot. If that's the case, then the first minute may be all that my fan ever runs during normal commuting. Even with my block heater, it still takes me ~7mi to get up to 200 F coolant temp on cool mornings.