Oil Filter - sort of!
The filter housing at the rear/right of the sump houses a gauze and a pressure-relief valve. The gauze is only to prevent large material from entering and blocking oilways and has nothing to do with filtering the oil. This is looked after by using the large capacity sump as a sediment bowl. In the early 1950s, AC added a by-pass filter.
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Website started 29th December 2006