For years arctic bush pilots would drain the oil and store it inside. It made prop starting a lot easier.
When I lived in Fairbanks, I had block/oil/battery heaters that did the job well. I would always start the engine, get it to idle, let out the clutch. After a few seconds, I'd put the trans in gear, and the t-case in neutral and idle a bit more, then go.
Had to drive on flat spotted tires for 50 yards or so, and the seats felt like picnic benches for 5 or 10 minutes.
Radiator blankets are mandatory if you want cabin heat, heck the temp gauge would barely leave the peg. Never set the e-brake because the cable would freeze inside the casing, I saw more than one car getting hauled to a shop to thaw. It always involved an irate husband lol.
I didn't bother with the video, never understood why doing these things is so amusing. It takes forever, and the mechanical stuff takes a beating, but hey it's their stuff.