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).
List of different oils used in each of the trials cars.
| Identifier | ExFiles\Box 144\3\ scan0142 | |
| Date | 13th January 1937 | |
| CX.{Major Len W. Cox - Advertising Manager} TRIALS CARS - RR & B. I give below a list of the different oils used in each car:- B 2 GA .... Prices Motorine "C". B 3 GA .... Wakefields Castrol "XL". B 4 GA .... Prices Motorine "C". GUL 1 .... Wakefields Castrol "XL". GUL 82 .... Wakefields Castrol "XL". 3-AZ-22 .... Prices Motorine "C". 3-AZ-38 .... Mobiloil Arctic. Attached: Rm{William Robotham - Chief Engineer}7/R.11.1.37. RC{R. Childs}5/L/13.1.37. CX{Major Len W. Cox - Advertising Manager} RECEIVED 14 JAN POST RC.{R. Childs} | ||