Old technology vs new technology...
old tech - let the dirt settle out and have the routine maintenance manually clean it out - (or not).
new tech - keep everything in suspension and have it removed along with the routine oil change.
old tech - large bearing surfaces with lots of extra clearance and tolerance for a certain amount of small debris
new tech - fairly tight and somewhat smaller bearing surfaces, sensitive to even fairly small debris
old tech - splash and gravity flow oil delivery to bearings, non-pressurized
new tech - fairly high and constant oil pressure fed to bearings at all times
It is also worth mentioning that a lot of the gritty stuff that Butch so meticulously removes... would usually stay bound up in the bubbles and paint that originally covers it all up anyway.
By the way, I vote for a clean engine by all means... but, the old designs have a lot of extra tolerance built in.
Nice work Butch!!!
dieselgman