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).
Copy of test results comparing two different types of oil: 'New Process Oil' and 'Motorine 'C''.
| Identifier | ExFiles\Box 32\4\ Scan128 | |
| Date | 27th February 1923 | |
| Messrs.Rolls Royce Ltd., -2- 27th. February/23. -: COPY of TESTS :- Sp.{Mr Spinney}Gr.{George Ratcliffe} Viscosity at 140°F.{Mr Friese} Setting Point. Cylinder deposit formed in the Test Engine. Carbonisation value by Laboratory method. New Process Oil. N.P.S. 913 200 8°F.{Mr Friese} 2.17 1.84. Motorine "C" 914 216 23 2.52 2.72 | ||