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).
Company's stance on customers using non-recommended special oils, referencing Lady Sassoon's car.
| Identifier | ExFiles\Box 145\3\ scan0199 | |
| Date | 25th October 1938 | |
| W/N. To Br.{T. E. Bellringer - Repair Manager} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} 1235 also 561. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}2/MH.{M. Huckerby}25.10.38. LADY SASSOON'S CAR. / 561. With regard to Br/G.25/G.17.10.38, we frequently have letters from customers who want to run on some special oil in which they are financially interested. We always reply that the correct viscosity for the lubricant for their car is "so-and-so", that there are several oils recommended in our instruction book, and that we shall take no responsibility for a failure that can be attributed to unsuitable oil. Perhaps you will write to Lady Sassoon in this vein. It is impossible at the Works to test the suit-ability of the oil, or, in fact, to come to any conclusion about it without doing a lot of mileage. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||