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).
Report comparing the properties and viscosity of various gear and engine oils.
| Identifier | ExFiles\Box 144\1\ scan0026 | |
| Date | 9th September 1912 guessed | |
| a copy of this in the usual form. GEAR OIL This appears to be an intermediate between our Battersea Gear Oil A & Battersea Gear oil B, the latter, as you are aware, being the heavier oil. In case it should be of interest to you we may explain that this V.O. Gear oil corresponds exactly with another grade of our Battersea reduced Cylinder oilfor which, however, we do not find any very great demand. We have shown the ratios in regard to Viscosity for these oils in a separate table. ENGINE OILS We tested both of the samples which you sent us and although some difference appeared in regard to Vimosity at 60°F Flash point and Fire Test, we do not regard these differences as greater than might be fairly be expected and accepted in | ||