37350 & 37012 pass Hullavington on 3 July 1990 with the 6A18 Robeston to Theale oil tanks. A couple of years earlier to celebrate the fact that as D6700 it was the first of the class, the then 37119 was repainted into an approximation of the original green livery (if you discount the full yellow ends!) at the same time as it was renumbered 37350. For the next few years it carried both the numbers 37350 and D6700, and being allocated to Cardiff's FPEK petroleum pool, was a regular sight on oil trains such as this.