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 test report on oil and petrol consumptions for two vehicles using Castrol XL and Mobiloil Artic oils.
Identifier | ExFiles\Box 145\2\ scan0125 | |
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 " 9.7 " -- -- -- -- -- 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..........60C. 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} | ||