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).
Laboratory comparison of two different oil samples, noting viscosity, flash point, and specific gravity.
| Identifier | ExFiles\Box 76\3\ scan0113 | |
| Date | 8th January 1920 | |
| COPY. EP.{G. Eric Platford - Chief Quality Engineer} c to BY.{R.W. Bailey - Chief Engineer} H11/EB28220. Laboratory. Re 2 samples of oil submitted in connection with BY7/P13220 and EP{G. Eric Platford - Chief Quality Engineer}/CEP4/H19220. Price's Amber Gear Oil "A" Price's Motorine "C". Viscosity @ 130°F.{Mr Friese} 830 secs. 285 secs. " " 212°F.{Mr Friese} 140 secs. 64 secs. Open Flash Point 558°F (291°C) 432°F (222°C). Specific Gravity .889 .920 Hdb [Footer, upside down] G 2585. (50 T) (S.G. 504. 8-1-20) G 2585. | ||