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 of oil consumption for a GUL 1 - 25/30 HP vehicle, detailing mileage and oil additions.
| Identifier | ExFiles\Box 142\3\ scan0055 | |
| Date | 1st July 1932 guessed | |
| Rm{William Robotham - Chief Engineer} 1204 Re: Oil Consumption. ----------- GUL 1 - 25/30 h.p. ----------- JULY. Speedo reading. oil added. 622. 1 qrt. 898. 1 qrt. 1036. 1 qrt. 1336. 1 qrt. 1501. 1 qrt. 1826. 1 qrt. 1906. 1 qrt. 2200. 1 qrt. 2573. 1 qrt. Miles for month - 1951 to 2 galls 1 qrt = 864 m.p.g. AUGUST. 2825. 1 qrt. added after changing oil = 252 m.p.qrt. 3019. 1 qrt. Test taken over 1071 miles consuming 3224. 1 qrt. 5 qrts 1 pt. making a consumption of 778.4 3390. 1 qrt. m.p.g. test again taken over 514 miles to 3591. 2 qrts. 2 qrts of oil making a consumption of 1028 3640. 3 pts. m.p.g. Miles for month - 1510 to 1 gall 3 qrts 1 pt. of oil = 808 m.p.g. September. 4410. 1 qrt. 4515. 2 qrts. 5120. 1 qrt. 5344. 1 qrt. 5517. 1 qrt. 5661. 1 qrt. 5894. 3 qrts. 6111. 1 qrt. 6393. 3 qrts. 7092. 1 qrt. 7480. 2 qrts. 7756. 1 qrt. Miles for month - 4169 to 4 galls 2 qrts of oil = 924 m.p.g. P.T.O. | ||