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I have a question. Can the sludge trap be done away with altogether? I would not like to have to take apart the entire engine, remove and replace all the bushings and bearings (false economy not to), take a chance on buggering the cases or something else, every 30K, which is like every three years, just to clean a filter. Especially since now I have an external oil filter.
If it has to be done it has to be done, but what do you think? Can it just be removed, and its function replaced by good quality oil and an external filter?
What was its orginal design function? A filter of last resort? For oils that were filled with wax, and metal particles from break in?
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