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 to Prices Patent Candle Co asking for clarification on an oil sample report, specifically regarding viscosity and fatty acid percentage.
| Identifier | ExFiles\Box 144\1\ scan0019 | |
| Date | 5th August 1911 | |
| Prices Patent Candle Co, dated Aug 5th We thank you for your report on 2 samples of oil which we despatched to you. With reference to this report we shall be glad if you will kindly advise us what is the Viscosity of the Battersea Air Oils at 60°F & that of Motorine B at 60°F & 212°F; We should be glad if you would remark on the data submitted already submitted and confirm the figure given for the percentage of free fatty acids in the Engine oil Sample. Trusting that we are not troubling you in this matter, X967 | ||