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).
Requesting the arrangement of engine oil tests with the Vacuum Oil Co. to check for loss of lubricating power.
| Identifier | ExFiles\Box 145\3\ scan0205 | |
| Date | 10th February 1939 | |
| 1235 + 1229. W/LH.{Mr Haworth} To RC.{R. Childs} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}6/MH.{M. Huckerby}10.2.39. ENGINE OILS. We have asked the Vacuum Oil Co. to carry out some tests for us in connection with the loss of lubricating power of oils after long use. If you will get in touch with Mr. Russell Sharp of the V.O.O.C. at Caxton House, Westminster, he will supply some Mobiloil A for one of your Wraiths and will then ask you to let him have 8 oz. samples from the crankcase every 2,500 miles. This will provide the town running test. We shall do likewise on our next French test for oil used under hard driving conditions. Will you please do this for us. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||