Dominic Mazoch posted:And it will not smell right. Coal has a different smell while burning than oil...
Now what about keeping the oil warm? Or is the air temps of the line warm enough where the fuel would not "turn into wax", and keep it flowing?
I doubt they'll be using Bunker C. Probably used crank case oil. Which isn't that thick. And which can also be heated by steam coils in the tender.
You can also start ground fires with an oil burner if you're not careful.
EDIT: Hot Water beat me to the punch.