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).
Record of oil consumption for car B 4 GA, detailing mileage readings when oil was added.
| Identifier | ExFiles\Box 144\3\ scan0177 | |
| Date | 5th March 1937 | |
| CX.{Major Len W. Cox - Advertising Manager} RC{R. Childs}4/L/5.3.37. B 4 GA - Oil Consumption. The sump of the above car was full at the speedo reading of 27561. 27911 1 qrt. 28045 1 qrt. 28219 1 qrt. 28843 1 qrt. 29173 1 qrt. Miles for month - 1612 to 1 gall 1 qrt of oil - 1288 m.p.g. [Stamp: RECEIVED 6 MAR 1937] RC.{R. Childs} ✓ | ||