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 and mileage for vehicle GUL 1.
| Identifier | ExFiles\Box 144\3\ scan0136 | |
| Date | 1st January 1937 | |
| CX{Major Len W. Cox - Advertising Manager} 6 JAN RECEIVED RC{R. Childs}4/L/1.1.37. Re: Oil Consumption. GUL 1. - - - - - - - - - - - The sump of the above car was full at the speedo reading of 11345. 11665 1 qrt. 11885 1 qrt. 12112 1 qrt. Miles for month - 767 to 3 qrts of oil - 1020 m.p.g. RC.{R. Childs}✓ POST JAN 6 Received | ||