Once upon a time, there was a great king called Vikramaditya - the WAM-4 - Shashank

Saw many blogs of WDP series engine pulling trains. Some were in LHF mode and some where in SHF mode. I want to know do LPs face any problem in any mode compared to other mode or is it like same experience in both LHF and SHF? Why not IR say to use only one mode i.e. either LHF or SHF?

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