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).
Confirming the use of Mobile Engine Oil for the 18.G.IV. gearbox.
| Identifier | ExFiles\Box 5a\3\ 03-page219 | |
| Date | 11th May 1933 | |
| X5840. To Hs{Lord Ernest Hives - Chair}/Gry{Shadwell Grylls} From G.W.H. Hotel de France. Chateauroux. Indre. 11.5.33. GEARBOXES We are running 18.G.IV. on Mobile Engine Oil. We note your remarks and will use same oil for the gear-box. G.W.H. | ||