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 oil consumption for car GWN 8, including mileage and oil added.
| Identifier | ExFiles\Box 144\3\ scan0194 | |
| Date | 2nd April 1937 | |
| CX.{Major Len W. Cox - Advertising Manager} RC{R. Childs}6/L/2.4.37. POST. RECEIVED 3 APR 1937 GWN 8 - Oil Consumption. The sump of the above car was full at the speedo reading of 168. 641 . 2 qrts. Miles for month - 473 to 2 quarts of oil - 946 m.p.g. RC.{R. Childs}✓ | ||