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 fuel and oil economy of two experimental car models.
| Identifier | ExFiles\Box 97\5\ scan0244 | |
| Date | 20th October 1940 | |
| B 100 To: SG.{Arthur F. Sidgreaves - MD} c: HS.{Lord Ernest Hives - Chair} c: EV.{Ivan Evernden - coachwork} c: Col.Fell, c: Lp.{Mr Lappin} 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 mileage without attention other than decarbonisation. G.SV. 6 Cyl. 4 L. This car was loaned to Colonel Fell last week; 447 miles were covered at an average petrol consump-tion of 16.83 miles to the gallon, and an oil consumption of 1380 miles to the gallon. The particular engine unit in this car has run 45,100 miles. 30.R.VII. 8 Cyl. 5h L. 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} | ||