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).
Follow-up letter regarding a pre-war test on thin oils to reduce cylinder bore wear in Bentleys.
| Identifier | ExFiles\Box 132\5\ scan0116 | |
| Date | 18th March 1940 | |
| 1123. W/N. Mr. Clarke. Rm.{William Robotham - Chief Engineer}10/ML.18.3.40. You will remember that before the war we arranged for a number of Bentley owners to run on thin oils with the object of ascertaining if this had any effect on reducing cylinder bore wear. We shall be glad to know whether you have had the opportunity of examining any of these cars as agreed. We shall be interested to know also, whether you have any records of cylinder bore wear on the old-type Bentleys. Rm.{William Robotham - Chief Engineer} | ||