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).
Use of Hi-Press rear axle oil for specific vehicles.
| Identifier | ExFiles\Box 145\3\ scan0209 | |
| Date | 18th January 1940 | |
| 1235 & 1015 To Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}7/JH.18.1.40. REAR AXLE OILS. There are in the Garage stores two cans of pool Hi-Press oil which will be the only kind available in 6 months time. Will you please put this oil in the rear axles of 11.B.V. and 12.B.V. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||