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).
Composition of a substance named REXOL, identified as petrol with castor oil, with potential for future testing.
| Identifier | ExFiles\Box 151\1\ scan0018 | |
| Date | 6th June 1939 | |
| 1282 W/N. To Br. {T. E. Bellringer - Repair Manager} from Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} 6/MH. {M. Huckerby} 6.6.39. REXOL. It is true that we have some of this stuff at Derby which one of our people brought from Kingsbury. We have not as yet done any tests with it on an engine as an analysis showed that it consisted of ordinary petrol with a small admixture of castor oil. If possible, we shall do some further testing later, in which case we will let you know the results. Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} | ||