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).
Letter regarding the use of Castrol lubricating oil for cars, recommending it over pure mineral oil.
| Identifier | WestWitteringFiles\E\June1920\ Scan24 | |
| Date | 14th June 1920 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to CS. " EFC. " OY. X.1434 X.1583. ORIGINAL. RE LUBRICATING OIL FOR CARS. I am very pleased to hear that your experience so far follows my forecasts, that a good and expensive oil like Castrol for lubricating the car is a profitable proposition. I would like to get it introduced and recommended, as quickly as we can with safety be sure there is no definite disadvantage in its use. You will remember that I have always been very definitely against the use of pure mineral oil for proper lubrication. R.{Sir Henry Royce} 3 R8/G11/6/20. 14 JUN 1920 RECEIVED | ||