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).
The use of thinner oil in cold weather and the need to update instruction books with this information.
| Identifier | ExFiles\Box 139\3\ scan0058 | |
| Date | 8th October 1934 | |
| To By.{R.W. Bailey - Chief Engineer} c. to E.{Mr Elliott - Chief Engineer} +995 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}19/KW.8.10.34. Instruction Books. ============ It is now universally appreciated that in order to get a car to start in really cold weather it is necessary to use thinner oil than that suitable for summer use. We consider for this reason that reference to such a procedure should be made in the Instruction Book. For English conditions we should recommend Mobiloil A.F. or Wakefield's C.W. oils. We are finding out from the other recommended suppliers what brand they would suggest for such conditions. In exceptionally cold climates such as Canada, extremely thin oils will have to be adopted during the winter, but under these circumstances there is almost always a recommended standard for the district which will naturally be adopted by the owner of the car. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||