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 GUL 1.
| Identifier | ExFiles\Box 144\3\ scan0170 | |
| Date | 2nd March 1937 | |
| cx.{Major Len W. Cox - Advertising Manager} RC{R. Childs}5/L/2.3.37. GUL 1 - Oil Consumption. _ _ _ _ _ _ _ _ _ _ The sump of the above car was full at the speedo reading of 13704. 13996 1 qrt. 14655 2 qrts. Miles for month - 951 to 3 qrts. of oil - 1268 m.p.g. RC.{R. Childs}✓ | ||