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. detailing the results of an oil analysis, comparing a used sample to standard Castrolite.
| Identifier | ExFiles\Box 145\2\ scan0203 | |
| Date | 15th May 1939 | |
| BY APPOINTMENT TO THE LATE KING GEORGE V.{VIENNA} Makers of the Famous WAKEFIELD “CASTROL” Motor Oils. C. C. Wakefield & Co., Limited. MANUFACTURERS of High Class LUBRICANTS. GOVERNING DIRECTOR, VISCOUNT WAKEFIELD OF HYTHE. JOINT MANAGING DIRECTORS, H.{Arthur M. Hanbury - Head Complaints} Y. BLADES, W. H.{Arthur M. Hanbury - Head Complaints} SENNECK. DIRECTORS, ALONZO LIMB, C. D.{John DeLooze - Company Secretary} SANDISON. SECRETARY, L. M.{Mr Moon / Mr Moore} BROADWAY. TELEPHONES: CITY 4411 (11 LINES) RESEARCH DEPARTMENT. PLEASE ADDRESS YOUR REPLY TO: RESEARCH DEPARTMENT, HAYES, Middlesex. Phone: HAYES 246/8 London, E.C.2. Handwritten notes: Top: 1231 JtG. Centre: GRY{Shadwell Grylls}- What mileage was this Rm{William Robotham - Chief Engineer} Right: 32,000 miles, 3 1/2 months, 2900 m.p.g. EAE/SC 15th May, 1939. Messrs. Rolls-Royce Ltd., Experimental Department, Derby. For the attention of Mr. Rowbotham. Dear Sirs, Ref. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux}8/JH. Thank you for your letter of the 5th inst., We have pleasure in giving you the figures we have obtained from testing your sample, together with our standard figures for this grade. Oil ex test engine. Standard Castrolite. Specific Gravity .877 .877 Visc. @ 70°F 11'8" 12'30" Visc. @ 140°F 1'48" 1'55" Fatty Oil Nil Nil Acidity 0.34 mgm KOH/gm oil Matter insoluble in 0.10% petrol ether Ash 0.08% Dilution 6% Colour Dark brown 14 Light Red 6 | ||