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).
Letter to a customer about engine detonation issues with low octane 'Pool petrol' and the solution of altering the ignition setting.
| Identifier | ExFiles\Box 89\5\ scan0199 | |
| Date | 24th April 1941 | |
| Rm.{William Robotham - Chief Engineer}10/ML. Customers cars, F.N 261(L) 24.4.41. Captain Frazer Nash, Messrs Nash & Thompson Ltd., Oakcroft Road, TOLWORTH, Surrey. Dear Captain Frazer Nash, I was told that your car would not run satisfactorily on Pool petrol and our tester, who came down with Mr. Evernden on April 21st., informed me that it was quite normal, i.e., the present Pool petrol has an octane value of about 72 and therefore one would expect slight detonations in picking up full throttle from 10 to 20 m.p.h. The best way to get rid of detonations if you really object to them is to alter the ignition setting. Yours sincerely, | ||