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I wonder then, if the issue is incomplete burning of fuel, an oil cleaner system can be created.
Then again, it might just be simpler to change the oil after a long (many 100 mile) low speed run.
That raises the question of how much it takes to cause the pitting. Is it 100's of engine hours at low rpm or a dozen hours, and over what time period. Is it the engine sitting around for days afterwards?
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