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).
Fuel and oil consumption checks on two experimental car models.
| Identifier | ExFiles\Box 135\2\ scan0222 | |
| Date | 20th October 1940 | |
| 1134 To: SG{Arthur F. Sidgreaves - MD}, c: Hs{Lord Ernest Hives - Chair}, c: EV{Ivan Evernden - coachwork}, c: Col.Fell, c: Lp.{Mr Lappin} Rm{William Robotham - Chief Engineer}5/Dm{D. Munro}20.10.40 Economy of present Experimental Models. ================================ We recently took two casual checks on a 6-cylinder and 8-cylinder Experimental Car, both of which had done a big milage without attention other than decarbonisation. S.87. 6 Cyl. 4L. This car was loaned to Colonel Fell last week; 447 miles were covered at an average petrol consumption of 18.33 miles to the gallon, and an oil consumption of 1589 miles to the gallon. The particular engine unit in this car has run 43,100 miles. 30.R.VII. 8 Cyl. 5L. During a trip to the south of England and back of 438 miles, the petrol consumption was 15 miles to the gallon, and the oil consumption 1700 miles per gallon. This car has covered approximately 50,000 miles. Rm{William Robotham - Chief Engineer} | ||