if someone else reads this and does, then he can and feel better about it. my 10 years in race bikes and cars has made me see what I need to see. with many tear down motors leading me to see what Motoman has seen. no one has to follow, I just know what works for me and that’s power with less blow by, less crap in my catch can, great oil analysis’s, great compression, and great MPG. when myself, friends or my old work has done motor rebuilds around here its safe to say one way works over the other a little better.
I have never worked on an old car that didn’t have oil build up on the manifold or TB etc. way more on some than on others or on mine. Blow by is an inescapable threat but some rings leak more than others. This all boils down to power as you will be mixing oil, air, and fuel. then you add in the lost compression and you lose power.
Can a motor last 300k with bad rings? Sure. Will it have all its power, MPG, and use zero oil? No way. From the pistons ive seen pulled out of motors (bikes and cars) some rings leak more than others. With my hands on ive always seen less carbon burns vs others and I say its because of the break in and the way I do it along with many others that believe and do it also.