We've got a 2006 F-350 diesel. I've never owned a diesel before, although I've driven them in the Army.
How cold does it have to be until you need to use the fuel/block heater? It's sitting for now; we're only driving it about once a week until we actually hit the road. It's been hovering in the low-to-mid 20s this week, with single-digit wind chills.
Just wondering....