RDSO has successfully tested ALCO and EMD locos with various blends of Biodiesel including 100% Biodiesel.
The main problem is that we do not have any supply. Jatropa plantations on IR lands have had poor yields and we weren't very successful in sourcing the biodiesel from external sources. So, for now, operations are being done with blends with 5% or 10% Biodiesel.