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).
Log detailing monthly vehicle mileage and oil consumption with calculated miles per gallon.
| Identifier | ExFiles\Box 142\3\ scan0058 | |
| Date | 9th December 1936 guessed | |
| AUGUST. 10031. 1 qrt. 10362. 1 qrt. 10388. 1 qrt. 10562. 1 qrt. 11154. 1 qrt. 11473. 1 qrt. 11801. 1 qrt. 12090. 1 qrt. Miles for month 2162 to 2 galls of oil = 1031 m.p.g. SEPTEMBER. 12516. 2 qrts. "L" type piston rings fitted during this 12924. 1 qrt. month also the car was decarbed. 13072. 1 pt. 13089. 1 pt. 13535. 2 qrts. Miles for month 1346. to 6 quarts = 896 m.p.g. OCTOBER. 13696. 1 qrt. Test carried out over 650 miles; 5 pints 13925. 1 qrt. being added to being the oil to its level 14312. 1qrt. making a consumption of 1040 m.p.g. 14988. 5 pts. 15519. 2 qrts. 15609. 1 pt. Miles for month 1961 to 2 galls. = 980 m.p.g. NOVEMBER. 16004. 2 qrts. 16132. 3 pts. 16810. 1 qrt. 17088. 2 qrts. 17340. 1 pt. 17528. 1 qrt. 17826. 1 qrt. 18164. 1 qrt. Miles for month 2671 to 2 galls 2 qrts = 1068 m.p.g. | ||