I don't suppose you have ever tried to use an oil bath filter in a
truly dusty enviroment. In my case, the worst case enviroment is
picking peanuts. We've had to stop and clean out the stupid oil bath
filters multiple times a day and still dirt gets through. The intake
between the filter and carb are coated.with oil residue and dust. With
modern paper filters, no problems. I can't imagine anyone who would
want to go back to oil bath filters. Even when properly maintained,
they are inferior to modern paper filters, and if not properly
maintained they are a disaster. They may have been state of the art 65
years ago, but their time has past.
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