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).
Laboratory report from C.C. Wakefield & Co. analysing a sample of Singer-Luvax Oil and recommending Castrol 'R' as an alternative.
| Identifier | ExFiles\Box 27\1\ Scan188 | |
| Date | 30th April 1929 | |
| RESEARCH DEPARTMENT. Telephone: 5202 CENTRAL (4 LINES) X3806 C.C. Wakefield & Co. Limited. MANUFACTURERS OF HIGH CLASS LUBRICANTS. GOVERNING DIRECTOR, SIR CHARLES WAKEFIELD, BART. MANAGING DIRECTOR, W.R. GRAHAM. DIRECTOR & SECRETARY, J.{Mr Johnson W.M.} BROWNE. EAE/CJR. LABORATORY: Wakefield House, 30&32, Cheapside, London E.C.2. 30th April, 1929. Messrs. Rolls-Royce, Limited, D E R B Y. Dear Sirs, Bijur Central Chassis Lubrication. We thank you for yours of the 26th instant. The sample of Singer-Luvax Oil which you kindly submitted to us for examination has the following characteristics:- Specific Gravity @ 60°F.{Mr Friese} 0.944 Viscosity @ 70°F.{Mr Friese} 144'0" (approx.) Viscosity @ 140°F.{Mr Friese} 380 seconds. Pour Test. 20/25°F.{Mr Friese} Mineral Matter. Nil. Fatty Oil. Probably nil (under 0.5%) Soap. Absent. Hence the lubricant is not a liquid grease. The pour point indicates that this would not be satisfactory below a temperature of 25°F.{Mr Friese} We were given to understand that it would be suitable at 0/5°F.{Mr Friese} and it was for this reason that we examined the oil. We feel confident that Castrol "R" will not gum under atmospheric conditions at any temperature which is likely to be encountered in the Bijur system for central chassis lubrication. Castrol "R" is inert towards ordinary metals of construction under normal atmospheric conditions. It must be borne in mind that copper is probably the most energetic - 1 - | ||