Netravathi Express to Trivandrum arrives behind Erode WDM-3A #14140. If you look closely there seems to a lot of soot from the exhaust on the Long hood of the loco. But this is not symmetrical. Does this mean mean that this loco is always run SHF or is it that this is its first duty after POH? 2 Jan 2006, by Anu Sathyan.