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 Prices Patent Candle Company regarding oil filter accumulation issues in Phantom III cars.
| Identifier | ExFiles\Box 144\1\ scan0261 | |
| Date | 21th November 1936 | |
| All communications to be addressed to the Company. Motor Oil Manufacturers By Appointment TELEGRAPHIC ADDRESSES. INLAND: BELMONT,BATT,LONDON. FOREIGN & COLONIAL: BELMONT,LONDON. CODES A.B.C. (5TH & 6TH EDITIONS) BENTLEY'S TELEPHONE: BATTERSEA 2000 (PRIVATE BRANCH EXCHANGE) RAILWAY STATION (PASSENGER) CLAPHAM JUNCTION. ALL QUOTATIONS SUBJECT TO ALTERATION WITHOUT NOTICE AND WITHOUT ENGAGEMENT. Prices Patent Candle Company Limited. Battersea, London, S.W.11. JWGB/VHG IN YOUR REPLY PLEASE QUOTE L.M/B 21st November, 1936 Messrs. Rolls-Royce Ltd. DERBY. YOUR REF: Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer},14/KW. Dear Sirs, By appointment the writer yesterday afternoon visited Conduit Street, and had a discussion with Mr. Cowen on difficulties which have been experienced with carbonaceous accumulation on filters in Phantom III cars. Mr. Cowen handed the writer for our Chemists examination a filter from a Phantom III explaining that it had been furnished to him by your goodselves from a car in which Motorine C had been used. Mr. Cowen added that somewhat the same trouble had been experienced with filters in the oil supply to the hydraulic tappets, and the writer explained that this was a matter which he had already discussed with you. It is desirable at this point to reiterate our explanation of the accumulation of deposit which has been experienced and which is exemplified by the small filter previously sent us for examination. In the course of working in comparatively cool weather small quantities of water accumulate in the crank case and the lubricant to some little extent emulsifies with this water. If the engine, including the lubricant, can be kept consistently at a fairly high temperature, the greater proportion of the water is evaporated almost as fast as it arises, and in consequence the oil keeps in better condition. If, however, through working conditions there are periods of low temperature, traces of water will (Contd.) | ||