Quote:
Originally Posted by Brian Carlton
That is the fundamental question. If it remains in suspension and doesn't clump, can it cause any wear in the engine?
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That is the question, and I don't think any of us really know. Personally, I believe less soot is better than more soot, so about 5000 miles is my "comfort zone." IMHO, oil is cheap enough that I don't have to optimize the process.