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).
And comparing the performance of various lubricating oils, including Mobile 'BB' and Motorine 'C'.
| Identifier | ExFiles\Box 144\1\ scan0165 | |
| Date | 8th August 1927 | |
| To Ps. Paris. from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} x967 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}5/LG18.8.27. LUBRICATING OILS. x967 x1583 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 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}/Rm.{William Robotham - Chief Engineer} Report dated 22 Feb 1926 attd. | ||