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).
Graph comparing the viscosities of various oils at different temperatures.
| Identifier | ExFiles\Box 68\2\ scan0220 | |
| Date | 21th March 1928 guessed | |
| COMPARISON OF VISCOSITIES FOR VARIOUS OILS. TEMPERATURE °C 80 70 60 50 40 30 20 10 0 TIME OF EFFLUX - SECS: 0 250 500 750 1000 1250 1500 1750 2000 OILS: CASTROL R.{Sir Henry Royce} MOTORINE C MOBILOIL B. COMPRESSOR OIL WAKEFIELD'S SHOCK ARSORPER OIL LARD OIL LOVE JOY OIL | ||