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).
Potential recommendation of Castrol oil for car engines, pending further testing.
| Identifier | ExFiles\Box 32\3\ Scan027 | |
| Date | 22th September 1919 | |
| EH. from EP.{G. Eric Platford - Chief Quality Engineer} X1583 EP{G. Eric Platford - Chief Quality Engineer}7/F22.9.19. CASTROL OIL FOR CAR ENGINES. With reference to the above, from the memos. and impressions as given by Mr.Royce, it would appear as though the use of Castrol oil for our engines should be recommended as a standard practice. Will you please confirm this, or otherwise. At present, I do not think it is quite in order for this to be done until we have thoroughly tested it on a car in service during all conditions of weather. The benefit derived from Castrol as regards overcoming piston knocks does not seem so great as to warrant any precipitate change. EP.{G. Eric Platford - Chief Quality Engineer} EP{G. Eric Platford - Chief Quality Engineer} | ||