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).
Comparative report on oil and petrol consumption using Castrol XL and Mobiloil Artic oils.
| Identifier | ExFiles\Box 145\2\ scan0126 | |
| Date | 18th November 1936 | |
| To Rm.{William Robotham - Chief Engineer} 1231 18.11.36. COMPARATIVE OIL & PETROL CONSUMPTIONS USING CASTROL XL. AND MOBILOIL ARTIC OILS. 32-EX. Car Weight 51c. 0q. 21 lbs. Pistons - std. production. Rings - 2nd. compression L. section. Conn. rods -drilled oil holes. Petrol system - pumps in frame. Castrol XL. Miles run.........189 Average speed.....50 m.p.h. Air temp..........10.5ºC. Oil consumption...336 m.p.g. Petrol............8.8 " Mob.Artic. Miles run.........189 Average speed.....46 m.p.h. Air temp..........6ºC Oil consumption...432 m.p.g. Petrol " 10.2 " Mob.Artic special SAE.Body. No.10-10.W Miles run.........189 Average speed.....47o Air temp..........9 C. Oil consumption...465 m.p.g. Petrol " 9.17 " Repeat on Castrol XL Mileage...........189 Average speed.....46 m.p.h. Oil consumption...504 m.p.g. 36-EX. Car Weight 53 c. 2q. 14 lbs. Pistons - std. production. Rings - .EB. slotted scraper. Conn.rods - plain rods. Petrol system - pumps on dash. Castrol XL. Miles run.........200 Average speed.....45.2 m.p.h. Air temp..........6ºC. Oil consumption 1,068 m.p.g. Petrol............9.58 " Mob.Artic Miles run.........189 Average speed.....50 m.p.h. Air Temp..........10ºC. Oil consumption...1,008 m.p.g. Petrol " 9.2 m.p.g. Mob.Anti-Freeze Miles run.........189 Average speed.....47o Air temp..........9 C Oil Consumption...672 m.p.g. Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} | ||