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 Alexander Duckham & Co. Ltd. confirming the recommendation of their oils in instruction books.
| Identifier | ExFiles\Box 145\3\ scan0136 | |
| Date | 24th September 1937 | |
| 1235 Rm.{William Robotham - Chief Engineer}3/AP. 24th September 1937. S.Bowrey Esq., Messrs Alexander Duckham & Co.Ltd., Research Laboratories, Holyport Road, Fulham, LONDON S.W.6. Dear Mr.Bowrey, Many thanks for your letter of September 18th. We think we have now reached the stage at which we can recommend your oils for R.R. and Bentley cars. We are, therefore, inserting them in our instruction books, recommending N.P.3. for Summer, N.P.XX. for Winter, and N.P.X. for extreme cold. We are mentioning the S.A.E. numbers of the various oils of all makes which we recommend for the different temperature conditions. Yours sincerely, | ||