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).
Letter from C.C. Wakefield & Co. regarding the development and chemical composition of Castrol Hi-Press E.P. lubricants.
| Identifier | ExFiles\Box 145\2\ scan0143 | |
| Date | 28th May 1937 | |
| 1231 BY APPOINTMENT Makers of the Famous "PATENT CASTROL" Motor Oils. C.C. Wakefield & Co., Limited. MANUFACTURERS OF HIGH CLASS LUBRICANTS. GOVERNING DIRECTOR, VISCOUNT WAKEFIELD OF HYTHE. MANAGING DIRECTOR, W.R. GRAHAM. DIRECTOR & SECRETARY, J.{Mr Johnson W.M.} BROWNE. TELEPHONES: CITY 4411 (10 LINES) RESEARCH DEPARTMENT. PLEASE ADDRESS YOUR REPLY TO: RESEARCH DEPARTMENT, HAYES, Middlesex. Phone: HAYES 246/8 London, E.C.2. EAE/AF 28th May, 1937. Messrs. Rolls-Royce, Ltd., DERBY. For the attention of Mr. Robotham. Dear Sirs, Mr. Massey has asked me to write to you giving you the present position in respect of our E.P. lubricants. Castrol Hi-Press has come through an evolutionary state chiefly with the object of raising its resistance to increased temperatures which are being experienced in rear axles. At the present moment we are just passing through the transition stage from the old type of Castrol Hi-Press to the new type. The new type will contain more or less pure chemical compounds belonging to the family of thio-ethers. | ||