Record of oil consumption for car GWN 2, detailing mileage, oil top-ups, and calculated miles per gallon.
| Identifier | ExFiles\Box 144\3\ scan0246 | |
| Date | 5th August 1937 | |
| CX. {Major Len W. Cox - Advertising Manager} RC {R. Childs} 4/L/5.8.37. GWN 2 - Oil Consumption. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 3567. 3962 1 qrt. 4572 1 qrt. 5245 1 pt. 5811 1 qrt. 6137 1 qrt. Miles for month - 2570 to 1 gallon 1 pint of oil - 2284 m.p.g. RC. {R. Childs} ✓ | ||
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).