Indian railways is great. Agreed. (I am also an Indian railfan) But it lacks commonsense at some point. Indian railways is keen on electrifying its rail network as it considers electrification will save cost. I don't know about other trains, but for this train, 12131 dadar shirdi Express, the route is completely electrified end-to-end. Indian railways, electrifying its non-electrified sections, can't even run a train with electric locomotive in a completely electrified section!! They are wasting money on diesel for this particular train!