From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Oil consumption results for the 25/30 HP trials cars GUL-1 and GUL-82.
| Identifier | ExFiles\Box 144\3\ scan0161 | |
| Date | 2nd February 1937 | |
| S/W. Rm.{William Robotham - Chief Engineer} 1220 Oil Consumption - 25/30 h.p. Cx{Major Len W. Cox - Advertising Manager}8/KW2.2.37. I attach the latest results with the two Trials Cars,GUL-1 and GUL-82, up to the end of January. Encs. RC{R. Childs}8/L/1.2.37 RC{R. Childs}9/L/1.2.37 Cx.{Major Len W. Cox - Advertising Manager} dwe L. Swell. R.{Sir Henry Royce} Willis P. Dodd. Please note Rm{William Robotham - Chief Engineer} Noted | ||