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).
Comparison of engine starting tests using Prices' 'C' Oil and Castrol Oil on a 40/50 engine.
| Identifier | ExFiles\Box 32\3\ Scan054 | |
| Date | 14th December 1920 | |
| X1583 To R.{Sir Henry Royce} from HS{Lord Ernest Hives - Chair}/TMW. c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to EP.{G. Eric Platford - Chief Quality Engineer} c. to Wd.{Mr Wood/Mr Whitehead} c. to EFC. c. to PN.{Mr Northey} c. to SWT. for R.R. Inc. HS{Lord Ernest Hives - Chair}/TMW2/LG14.12.20. X.4298. X.1583. X.967. TESTS TAKEN ON PRICES' "C" OIL AND CASTROL OIL. We attach herewith record of tests giving the comparison of the amperes taken to turn to a standard 40/50 engine using - (a) Prices' "C" Oil and (b) Castrol Oil. From this it will be noted that at the coldest condition for starting (34ºF) considerably more power is taken to turn the engine at fewer revolutions with Castrol than with Prices' "C" oil, whereas, at the higher temperatures, not so much difference is to be noted. HS{Lord Ernest Hives - Chair}/TMW. | ||