Start running Howes in your fuel now BEFORE you get to cold country and keep running it continuously through the winter and you will not have any problems with fuel gelling, no matter how bad the fuel gets, go to their website and check it out, if you do gel up, they'll pay the tow, never heard of it happening if used correctly, and I've used it in -80
that's still not going to help you start if your truck doesnt' like to start down below zero though. If you are going to be spending extended time in cold country, you might want to invest in an
Espar fuel fired block heater These things are a mini furnace that fires up on diesel and heats and circulates your coolant through the block and heater core on a timer and even turns your heater blower fan on and clears your windows and heats up the cab nice and toasty all ready to go if you hook it in. You are going to find more and more motels up north that do not have outside plug ins anymore for block heaters like they used to, and even fewer job sites are going to supply that convenience, plus if you get stranded out on an interstate ( where you will ALWAYS be carrying a weeks worth of emergancy rations and subzero sleeping bag, in case the plows don't come out or can't get through due to multiple accidents, stop by a surplus store, a weeks worth of MREs will fit in very little space) the Espar unit uses very little fuel to keep you warm