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).
Promotional brochure for the B.W.P. Variable Level Oil Intake, explaining its benefits for engine lubrication.
| Identifier | ExFiles\Box 135\3\ scan0069 | |
| Date | 20th September 1934 guessed | |
| A Simple Way to BETTER LUBRICATION The accompanying illustration shows how the contents of the average crankcase will settle into well-defined layers if left undisturbed. The proportion of water in the crankcase in cold weather is frequently excessive. In order to demonstrate the truth of this picture, have your crankcase drained immediately after stopping the motor and fill a quart bottle with the drainings. Within a few minutes the layers define themselves and after an hour or so, a condition similar to the one shown in the test tube will result. The bottom layer is made up of abrasives such as road dust, metallic particles, coresand, etc. Above this is a layer of water—a considerable portion of the total in cold weather. The pure oil is the top layer. The unique principle involved in the B.W.P. Variable Level Oil Intake makes it possible to take the oil from the upper layer, leaving the water and solids undisturbed at the bottom to be flushed out at the next draining. [Image labels] OIL WATER ABRASIVES Introducing the B.W.P. VARIABLE LEVEL OIL INTAKE (PATENTED) BRITISH WIRE PRODUCTS LTD. 25 VICTORIA STREET, LONDON, S.W.1. Telephone: Victoria 9721/4 | ||