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).
Benefits of using a good quality lubricating oil like Castrol over pure mineral oil.
| Identifier | ExFiles\Box 32\3\ Scan029 | |
| Date | 11th June 1920 | |
| X1583 To Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to CJ. " " EFC. " " Oy. R8/G11.6.20. X.1583. X.1434. RE LUBRICATING OIL FOR CARS. I am very pleased to heard 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} | ||