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).
Alterations to the list of recommended engine oils for instruction books.
| Identifier | ExFiles\Box 139\3\ scan0129 | |
| Date | 23th September 1937 | |
| To By/NW.{N. Walker - Patents} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} C.c. By.{R.W. Bailey - Chief Engineer} 1164 Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}10/MH.{M. Huckerby}23.9.37. Recommended Engine Oils. We suggest that the instruction books on this subject are altered to - Summer Winter Extreme Cold. (S.AE.50) (S.AE.30) (S.AE.20) Wakefield XL. CW. (S.AE.20) Prices C. M.{Mr Moon / Mr Moore} ---- Vacuum BB. A.{Mr Adams} Arctic. Shell Triple. Double. Single. Duckhams N.P.3. N.P.XX. N.P.X. (Omitting Price's from the Ph.III list.) The choice of oil should depend on the coldest conditions to be encountered. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||