How will my new F350 behave in cold temps?

Based on my experience with 2012 Ford 6.7--doubt that what follows has changed: New trucks are probably shipped with 10W-30 semi-synthetic oil--it is good down to zero degrees. The engine itself is rated to start down to -10 without a block heater. Mine will kick off in the teens with no hesitation. OP might want to consider arriving up North with a part tank of fuel so he can fill up with the thinner Northern fuel. NEVER, EVER, use a fuel additive containing alcohol--too much chance of taking out the high pressure fuel pump and injectors. Ford makes Motorcraft branded fuel treatment and anti-gel fuel treatment--that's all I use, and it guarantees that it is OK for a Ford engine. The one year I used Motorcraft anti-gel it made the engine rattle more than the Northern thin fuel did already. It was never needed the other 7 winters in Indiana. I did use my block heater to baby my baby, but I never saw the oil temperature more than 10 to 15 degrees higher than the outside air temperature. Ford recommends idling for at least 15 seconds just to get oil circulating to the turbo. In my experience idling did nothing discernable to raise the engine temperature--only putting on a load by driving down the road would help. In teen temperature weather, not even my 20 minute drive to work would get the engine temperature up to normal. The best thing for cabin temperature comfort is the optional electric coil in the heater system. It worked great for me to defrost the windshield in teen weather.