In a departure from IR's tradition with diesels, this prime mover cranks with an air starter rather than an electric starter motor. The loco is provided with an independent air start reservoir visible under the frame (the cylindrical tank next to the...

In a departure from IR's tradition with diesels, this prime mover cranks with an air starter rather than an electric starter motor. The loco is provided with an independent air start reservoir visible under the frame (the cylindrical tank next to the fuel tank).
For regular operations, the Autostart system will keep the air tank charged. In case the loco has been dead for a while, air from another coupled loco can apparently charge the air start reservoir.

I think WDG5 will be the 2nd IR diesel locomotive to have 20 cylinder power-pack after the German, Henschel made WDM3 locos (please do not confuse with DLW WDM3A locos).