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).
Recommending specific viscosity 50 oils for the Phantom III 'D' series gearbox.
Identifier | ExFiles\Box 145\3\ scan0184 | |
Date | 24th May 1938 | |
γ 1235 To NW.{N. Walker - Patents} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. By.{R.W. Bailey - Chief Engineer} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}2/MH.{M. Huckerby}24.5.38. P.III 'D' SERIES OILS. With regard to NW.{N. Walker - Patents}13/VL.{V. Lewis / Mr Valentine}9.5.38, we recommend this should be the same as Bentley 'M' series except that the gearbox should run on - Castrol XXL or Vacuum BB or Price's C or Shell Triple. these all being viscosity 50 oils. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||