Tangentially related, but in a book I read about Alaskan bush aviation, the author said plane engines sometimes had to be drained of oil. On extremely cold nights, the oil could freeze.
Still an issue, but nowdays they have electric heaters on the engines to keep them warm unless you are parked on a bush strip without access to electricity on the apron. Everyone has cowling blankets and wing covers too.
I remember a lot of oldtimers that homesteaded the interior telling me how they used to take a coffee can full of wood ashes dump some gas and oil in it, light it and shove it up under the oil pan of their trucks when it was -40F. When the fire burned out, you carried your battery out, put it in the truck, hooked it up and cranked the engine. Hopefully it would fire on the first couple of tries.
After you were done using the vehicle, you pulled the battery and set it next to the woodstove. Today we have electric block heaters, oil pan heat pads and battery blankets or heated plates. All our vehicles north of the range have electric cords hanging out of the grill. skAnchoragians for the most part rarely plug in.