Close-up view of an engine bay component, showing a float mechanism inside a tank and a lubricant recommendation plate.
| Identifier | ExFiles\Box 141\2\ scan0186 | |
| Date | 24th April 1939 guessed | |
| LUBRICANTS RECOMMENDED ENGINE & GEARBOX Messrs. C.C. WAKEFIELD & Co. Ltd. ‘CASTROL’ Grade R (Summer) ‘CASTROL’ Grade CW (Winter) | ||
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).