You are trying to fire an old 240 off at -2 without a block heater. Many just won't do that. Mine won't. Get some heat on it, use a magnetic sticky heater, or a little space heater under the hood, or even a worklight and a blanket. Your car may be ok, just too cold to go. Install a block heater when you get a chance.

As far as the fuel goes - wiggle the clear primary filter around and see if the fuel is still liquid. This isn't the end-all, but can give you a general idea of how the fuel is.

Do you have synthetic oil? At -2 with conventional 15W40 you probably can't start without some heat.

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'79 240D 4 speed manual 105k miles