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 performance of a new shell fuel tested in a 4¼-litre Bentley, noting its inferiority regarding pinking.
| Identifier | ExFiles\Box 150\1\ scan0292 | |
| Date | 2nd April 1937 | |
| 1282. W/S. {Derby Works / Sales} C. from Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} Rm. {William Robotham - Chief Engineer} absent. Rm {William Robotham - Chief Engineer} /Gry {Shadwell Grylls} 5/R.2.4.37. Replying to C14/Cl.4.37., we were sent a 20 gallon sample of the new shell fuel. We tried this on a 4¼-litre Bentley, and found that it was noticeably inferior to Ethyl, from the point of view of pinking. Rm {William Robotham - Chief Engineer} /Gry. {Shadwell Grylls} | ||