Pouring Forth Oil - III & IV is a main story mission in Red Dead Redemption 2 given by John Marston , as part of Chapter 2 . It's the 19° mission in chronological order of the RDR2 story mode, played with protagonist Arthur Morgan . POURING FORTH OIL - III & IV - MISSION DETAILS: Blocking the tracks with the heavy oil wagon, Arthur, John, Charles and Sean board the train and rob valuables from the rich passengers and baggage car.