I personally can not wait till it is -20, I do better in the extreme cold.
And I use three sand bags and a shovel, and only put it into 4x when I want to have a little fun or when they are in the process of plowing the roads.
Love delivering pizza during a big blizzard, no one is on the roads and the cops just look at you like your crazy.
2013 Ford F-150 FX4
5.0 6-speed Auto/Manual 4x4
1992 Ford Ranger STX
4.0 5-speed 4x4
1987 Mercury Cougar
5.0L AOD 8.8