Oil sump filters and the benefit of externally cleaned filters, referencing the Auto Klean filter on a Sunbeam car.
| Identifier | ExFiles\Box 44\1\ Scan302 | |
| Date | 3rd May 1929 guessed | |
| contd :- -2- the Zenith or the Enots. For an oil sump however where the filter is inaccessible it would appear to be a marked asset to be able to restore the filter to 90% cleanliness by turning the handle on the outside of the crankcase. We have seen a very neat scheme of Auto Klean filter incorporated in the crankcase of the 20 HP Sunbeam car. HS {Lord Ernest Hives - Chair} /Rn. {Mr Robinson} | ||
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).