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).
The lubricant and service intervals for a 'Wilson' Gearbox in a Light Tank.
| Identifier | ExFiles\Box 25\1\ Scan021 | |
| Date | 31th March 1932 | |
| X4688. RHC.{R. H. Coverley - Production Engineer} from E.{Mr Elliott - Chief Engineer} C.H. [struck through] Her. [struck through] Mr. [struck through] Hs.{Lord Ernest Hives - Chair} E.4/HP.31.3.32. re "Wilson" Gearbox in Light Tank. With reference to the question of running the above, would you please note that the lubricant for the "Wilson" Gearbox should be Vacuum Mobiloil E.{Mr Elliott - Chief Engineer} The service instructions are to the effect that this oil only should be used, and that it should be changed after the first 100 miles, and thereafter every 250 miles. [Stamp: RECEIVED 4 APR 1932] E.{Mr Elliott - Chief Engineer} | ||