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).
Vehicle performance concerning petrol surge, spark plugs, and fuel types.
| Identifier | ExFiles\Box 82\1\ scan0017 | |
| Date | 19th February 1933 guessed | |
| three or four gallons before the reserve is reached the petrol may momentarily surge away from the suction pipe and the pumps clatter noisily; this gets steadily worse until finally the reserve is reached, the cure is:- 1 Silent petrol pumps. or 2 Better tank baffeling. PLUGS. X318's condemned for burning of the central electrode. PETROLS. The car can be driven on ordinary French petrol by judicious use of the ignition control but a certain amount of performance is lost. Esso, which can be obtained anywhere, or Azur are quite as good as the British Ethyl. On the Riviera petrol can be obtained with a guaranteed octave value of 80, with this all detonation is supressed. RM{William Robotham - Chief Engineer} | ||