Good thing Ford uses the Powerstrokes, because I don't know of anything that fires harder than an inline 6 Cummins. I am not sure about the 5.9's but the larger Cummins will not fire even with the block heater plugged in. Only fires with ether which is not good at all.
If you want an experience drive a International 2674 from Marquette MI to Northville MI in January. Driving through a blizzard and then geting pulled over right after the Mackinaw Bridge because of a clearance light out and no log book. So the next morning go out to fire the truck which has been plugged in all night, cycle the glow plugs little shot of ether and would not fire, after a little cranking it killed the batteries. So after melting the cords on a battery charger it started and white smoke filled the entire city like a fog.
So after all that nonsense, keep good care of your truck and let it have so warm up time on the cord and a little time after it fires. The truck I was driving was a trade in unit, Industrial truck, from a Marquette power plant.