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 figures for a Chevrolet car comparing Mobiloil Artic and Castrol XL.
| Identifier | ExFiles\Box 126\4\ scan0169 | |
| Date | 15th January 1937 | |
| Cm FILE 1056 15-1-37 Chevrolet Car. Herewith are the oil consumption figures taken after a mileage of 12,500 on Castrol XL and Mobiloil oils. Mobiloil Artic. Miles run 180 Oil used 1 1/2 pt. Average speed 45 mph Oil Pressure. 17" lbs. Oil Cons. 960 mpg. Castrol XL. Miles run 180 Oil used 1. pt Average speed 17 lbs Oil Cons. 1440 mpg. RM{William Robotham - Chief Engineer}/FD{Frank Dodd - Bodies} | ||