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 requesting the testing of two lubricating oil samples, one engine oil and one gear oil.
| Identifier | ExFiles\Box 144\1\ scan0012 | |
| Date | 19th July 1911 | |
| R.R. 2354 (100H) (W 527. 26.5.11) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1695. x967 TBR20/L19711 19th July 1911. Messrs Prices Patent Candle Co. Ltd., Belmont Works, Battersea, London. Dear Sirs, We are sending you today two samples of Lubricating oils each sample being contained in two tins; the two tins marked No. 1 being engine oil and those marked No. 2 being gear oil. We shall be glad if you will test these as regards the following points:- Engine Oil (Sample No. 1) Specific gravity. Viscosity at 60° F and 212°F Redwood. Flash point (Close). Evaporation. Acidity. Composition. Gear Oil. (Sample No. 2) Viscosity at 60° F and 130° F.{Mr Friese} Percentage of water if any. Composition. Any further test which you can suggest. | ||