37891 growls up Ashley Down Bank and passes Narroways Hill Junction with the 6B27 16:00 Theale to Robeston Murco oil empties on 16 April 1991. A welcome change from the Class 47s on 6M29, 6B97 & 4B74, but of course nowadays you wouldn't get all this traffic and certainly no heritage traction! Most Class 37s on oil trains in the Bristol and South Wales area in the early 1990s were allocated to the Cardiff Canton FPEK pool, however 37891 is a bit of an interloper as at the time it was allocated to Immingham's FPFR pool, which meant in nominally worked off Ripple Lane.