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Pardon. I meant to add my old post above only as a link to my reply to RedHexTex & company's most welcomed info about microns in the below thread, not to start a new thread.
Caramba.

Both pistons and rings have been much improved in recent decades, as have motor oils. A lot of vehicles now have overdrive, too. Bore to stroke ratios affect longevity, too. I believe that durability is best with the stroke just a little longer than the bore size.

This is related to my thread just below this one regarding oil filter micron ratings, and how bypass-type filters have a lower (finer) micron rating.

If you really think about it, all that it takes to transform a full-flow "rock catcher" oil filter that filters all of the oil poorly into a bypass filter that filters some of the oil well is a change in the type of media.

A normal full-flow filter with a coarse filtering media will filter all of the oil, but will only trap larger particles.

If you take that same filter but change the media into a finer media that traps smaller particles, the increased restriction will cause less oil to pass through the filter and more oil to pass through the filter bypass valve. It effectively becomes a bypass-type oil filter.

The engineer in me tends to think that bypass-type oil filters are the better way to go. Medium and heavy-duty Diesels use bypass-type filters because they trap the highly abrasive and yet incredibly small soot particles that cause wear.

However, the pragmatist in me says that all modern gasoline automobiles use full-flow oil filters and last a very long time like that, so perhaps full-flow is better on gasoline engines, somehow.