[tacticalogic]

No keys....How easy to hot wire a tank?

Assuming it's a diesel, it shouldn't be too hard. There's no ignition system, so if it's got fuel and will turn over it should start. There may be fuel cutoff solenoid that has to be jumpered, but that should be it.

[Erasmus]

If it’s cold (not very unlikely!) you’d probably need to light up the glow plugs.

[steve86]

There must be something like a glow plug with the mechanical fuel injection. Also I imagine there is a fuel heating system.