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 the Vacuum Oil Company requesting an opinion on silt found in an oil filter from a Phantom III car.
| Identifier | ExFiles\Box 145\1\ scan0191 | |
| Date | 14th April 1937 | |
| 1229. Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls}7/R.{Sir Henry Royce} 14th April, 1937. O.T. Jones, Esq., Vacuum Oil Company Limited, Caxton House, Westminster, S.W.1. Dear Mr. Jones, We are sending you under separate cover an oil filter from one of our P.III cars which has run a distance of 1500 miles on Arctic oil. Before the beginning of this test new oil was put in the engine. We should like to have your opinion as to whether the amount of silt on this filter is normal, or what you think could have caused it. We are worried by the rapidity with which the silting has taken place. Yours sincerely, | ||