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).
Viscosity-temperature chart for various Castrol and Motorine oils.
| Identifier | ExFiles\Box 145\1\ scan0088 | |
| Date | 7th February 1934 guessed | |
| AMERICAN SOCIETY FOR TESTING MATERIALS 1916 SPRUCE ST.{Capt. P. R. Strong}, PHILADELPHIA, PA.{Mr Paterson} COPYRIGHT, 1932 VISCOSITY-TEMPERATURE CHART A.S.T.M. TENTATIVE STANDARD D 341-32 T AXES: TEMPERATURE, DEGREES FAHRENHEIT VISCOSITY, REDWOOD UNIVERSAL, SECONDS PLOTTED OILS (from top curve to bottom): CASTROL 'GP' MOTORINE 'C' CASTROL XL AERO CASTROL 'C' PATENT CASTROL 'R' CASTROL XXL | ||