Don't forget to plug in your diesels tonight so they will start in the morning. Leave them plugged in while under 32 all day. Or, be prepared to buy some batteries. Just saying.
There is a plug receptacle behind the drivers side tow hook if you look behind the front bumper. Plug this into an electric outlet and it will keep the engine toasty for that in the morning cold start...costs about a buck to keep it toasty.I just bought 2 new batteries for my '01 F250. School me on this plug in thing. I have never done this ??
I didn't have to plug my 7.3 in Co until it got below 10*. In the teens or up, I just had to let the glow plugs run a full cycle and it fired right up.
I did, however, forget to open my fuel/water seperator valve to let any water that might be accumulated in there drain out and it ended up freezing and cracking. Those are on backorder with Ford right now so even the dealerships that have them are holding them for the back parts counter only so you should go ahead and open that valve to make sure it's full of diesel and not water.
If you do happen to have yours freeze, at least for the 7.3, Dorman makes an aftermarket part that you can get for it from Carquest.