I'll easily admit that I'm a bit scared/paranoid/worried and I believe that is healthy given the challenge. Anyone dealing with those temperatures, knowledge of frozen lines and the havoc they can cause, along with a healthy respect for hypothermia would be a bit scared or cautious and want to make the best decisions possible for the longevity of both rig and life while still enjoying the journey.
My to-do list for preparing based off ideas in the thread so far:
- get a propane tee installed for external tanks (just darn good to have)
- use cabin furnace and keep around 55-60F
- get a couple desiccant dehumidifiers
- get vent insulation inserts
- consider insulation options (pink fluff or Reflectix) for between window and blinds
- plan to only stay near a 30 amp feed, boondocking adds risk/danger in these temps
- use electric heaters as a backup or supplement as needed
- get the rig winterized and use the electric tank warmers anyway
- flush with a 1:1 for rv antifreeze and water
- insulate fresh water drain line (note to thor: improve this design)
- bring a few freshwater cubes inside the cabin
- stow a couple bundles of dry firewood JIC
- the weather can change quickly, bring some spray deicer
- don't forget tire chains and a shovel