Been there! I went from Malta to Pocatello with a broken heater fan at temperatures between -5 and -35. Had to buy oversized cold weather boots to have room for more socks. It helped, but still had mighty cold feet.
Yep, such cold temps can play havoc on machinery.
I now have a couple of the green 1 pound propane bottles inside the old Land Cruiser, along with a little cookstove top. It puts out a pretty good amount of heat and does not take long to get the interior a fair bit warmer.
Plus I can have hot coffee or tea anytime, anywhere!
THE CHAIR IS AGAINST THE WALL.
The Tikka T3 in .308 Winchester is the Glock 19 of the rifle world.