mmm.
cleanliness (clarity) of oil and amount of metal in oil are two very different measures.
for instance if one is made to run well no matter what octane you feed it, vs one that only likes high octane race fuel I might expect different oil appearances..
2valves, four valves etc also weigh in..

-OMotS


"If memory serves fails me..."
Quote: ( unnamed) "been prtty deep in the cooler todaay "

Television and radio are most effective when people question little and think even less.