There are many

There are many things that can contribute to oiling issues and many things that don't seem to add up or make much sense...like the guy with the multiple gauges losing #3 & #7 rod bearings, where #3 rod is feed from the center main and #7 is feed from #4 main.... you would assume that #6 and #4 rods would also be damaged as they are also feed from those same mains, if there was a lack of feed/pressure there?
Testing time...