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).
Oil consumption for car 3-AZ-22.
| Identifier | ExFiles\Box 144\3\ scan0200 | |
| Date | 4th May 1937 | |
| CX.{Major Len W. Cox - Advertising Manager} RC{R. Childs}3/L/4.5.37. Re: 3-AZ-22 - Oil Consumption. ----------------------- The sump of the above car was full at the speedo reading of 15490. 15723 1 pt. 16066 1 pt. Miles for month - 576 to 1 qrt of oil - 2304 m.p.g. RC.{R. Childs} ✓ POST. MAY 5 Received | ||