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).
Specification sheet for Amber Gear Oil.
| Identifier | ExFiles\Box 76\3\ scan0122 | |
| Date | 8th January 1920 | |
| R.R. 235 B (50 T) (S.G. 504. 8-1-20) G 2585. H117/EB22919. COPY. Amber Gear Oil. Viscosity 130°F.{Mr Friese} 594 secs. 212 F.{Mr Friese} 87 " Flash Point 246° C. Fatty Oil 7.44% | ||