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).
The preference for using Ethyl Petrol during plug testing for Phantom III Trials Cars.
| Identifier | ExFiles\Box 162\4\ img262 | |
| Date | 25th February 1937 | |
| 6001b W/LH{Mr Haworth} - RC{R. Childs} from Rm{William Robotham - Chief Engineer}/Wst. Rm{William Robotham - Chief Engineer}/Wst1/M.25.2.37. Phantom III Trials Cars. ----------------------- Replying to your RC{R. Childs}1/L/24.2.37, we should prefer you to use Ethyl Petrol while these plugs are being tested. Rm{William Robotham - Chief Engineer}/Wst. | ||