[rotorwrench]

Many people fly rather than drive in the great white north due to the obvious lack of roads way in the out yonder. Back in early days (and maybe a few still do in some cases), they used to drain the engine oil after shut down before it congealed then they'd heat it up on a stove prior to pouring it back in for a run to the nearest town. Every sort of heater & smudge pot you could imagine was used to warm stuff up prior to even attempting a start. Some big aircraft even used fuel to dilute the oil prior to starting just to thin it out. Only a controlled portion of oil was diluted in the special oil tanks then the fuel would evaporate as the engine warmed up and oil was further mixed with the rest of the oil in the tank.

With Herman Nelson heaters and electric heaters and such this laborous and sometimes dangerous practice has been deep sixed by most folks.

Kerby