Properties and performance of different lubricating oils, specifically comparing Mobile 'BB' with Motorine 'C'.
| Identifier | ExFiles\Box 32\3\ Scan157 | |
| Date | 8th March 1927 | |
| To Ps. Paris. From Hs {Lord Ernest Hives - Chair} /Rn. {Mr Robinson} 41583 Hs {Lord Ernest Hives - Chair} /Rm {William Robotham - Chief Engineer} 5/LG1 8. 3. 27. LUBRICATING OILS. X967. Attached is a copy of the information you require on Prices Motorine 'C' and Wakefields 'XL' oil. With reference to Mobile 'BB' oil. While we have never actually carried out any exact comparative tests of this oil and Motorine 'C' on the bench, we have run a large number of miles at Chateauroux(French test region) on this oil, and in fact, frequently used it when on the Continent. As regards lubrication, Mobile 'BB' appears to be perfectly good oil but our impression is that it has a slightly greater tendency to carbon up than Motorine 'C'. Hs {Lord Ernest Hives - Chair} /Rn. {Mr Robinson} Report dated 22 Feb. 1926 attached | ||
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).