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).
Analysis of a sludge sample from a gearbox run on Castrol Hi-Press Light.
| Identifier | ExFiles\Box 145\2\ scan0083 | |
| Date | 1st November 1935 guessed | |
| x1231 COPY. GRAY Sample of sludge from gearbox run on CASTROL HI-PRESS LIGHT. .......... Very small sample. Soft black deposit. Oil sol. in 40 Pet. Ether = 48.3% Oxid. oil sol. in benzene = 2.0% Other combustible matter = 28.5% Mineral matter = 21.2% ------ 100.0% Analysis of mineral matter:- Silica and insol. matter = 8.8% Copper oxide (Cu.O) =59.2% Iron & aluminium oxide =29.9% Nickel oxide = 0.3% Lime (CaO) = 0.7% ........... | ||