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9000 miles with conventional oil? Rotella is decent oil, but 9000 is way too much. You're outrunning the additive package - the buildup and the failure after to prevent loss at ~ 4000 miles . At best, conventional oil will last 5000 miles. The only other way to fix that, and this is direct...

do not use ATF on this motor - its detergent action will clean all the crud off the interior and likely plug a vital oil passage. man-o-meter? lol -

Pennzoil? whatever oil you're using is pretty crap with that kind of buildup... to be honest, I'll never understand why people use cheap oil - it's a false economy and probably the cause of your issues now... What weight oil are you running? are you certain the oil is going out the exhaust...