So many tricks.
Ever do the redirected truck exhaust one to unfreeze locked tank valves?
I worked for a small oilfield company where we all shared trucks and trailers and somebody forgot to finish their trip during freezing weather with the turpentine into the empty tanker.
Never had to do that. My brake shim habit was actually pretty quick to do since I would do it during the post and pre trip inspections.
I remember as a kid watching my dad put a 1/4” of gas in a folgers coffee can, and carefully set it on the ground under the family chevy impala w/327. He put it right under the oil pan, and lit it. When I asked why the gas didn’t go off in a fireball, he said it could only get enough air to burn slowly. After the gas burned up he started the car.
I think I only did that two or three times with an old pickup that was coldblooded. It worked, but is tough on oil pan paint.