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 B 4 GA, detailing mileage and oil added.
| Identifier | ExFiles\Box 144\3\ scan0155 | |
| Date | 1st February 1937 | |
| CX{Major Len W. Cox - Advertising Manager} 1220 B 4 GA - Oil Consumption. RECEIVED 12 FEB 1937 RC{R. Childs}7/L/1.2.37. The sump of the above car was full at the speedo reading of 26046. 26187 1 pt. 26384 1 pt. 26723 1 qrt. 27006 1 pt. 27561 1 qrt. Miles for month - 1515 to 3 qrts 1 pt of oil - 1728 m.p.g. Consumption for previous month - 1512 m.p.g. RC.{R. Childs}✓ | ||