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 Essolube 'Racer' lubricant.
| Identifier | ExFiles\Box 90a\4\ Scan059 | |
| Date | 31th March 1936 guessed | |
| ESSOLUBE "RACER". Specific Gravity @ 60°F.{Mr Friese} .8978 Closed Flash Point. 340°F.{Mr Friese} Open " " 535°F.{Mr Friese} Fire Point. 620°F.{Mr Friese} Viscosity - Redwood I. @ 70°F.{Mr Friese} 4534 secs. @ 140°F.{Mr Friese} 420.5 " @ 200°F.{Mr Friese} 118.9 " Pour Point. 20°F.{Mr Friese} N.P.A. Colour. 6-7. Robinson " 1½. Coke (a). 0.62 Coke (b). 2.08 Viscosity Ratio. 1.93 | ||