Oil change - filter differences.

[furious_blue_imp]

Honda's reputation for reliability was built in large part on those centrifugal oil filters. From the first step-through 50s, through the DOHC 450s, and still today as Tev62 says. I remember servicing tons of them, pulling off the filter or clutch covers, scraping out packed-in metallic sludge, sometimes 1/2" thick. They are remarkably effective but become less so as they fill up.

I've been under the impression that fine oil filtration is not necessary if the engine has non-plain bearing crankshaft journals (?). With ball or roller bearings handling the heavy loads there is not the dependence on having a fine high pressure layer of oil between surfaces to discourage metal-on-metal contact as with plain bearings. True ?
My old CB350 was like that and my XS650 is like that. The XS650 OHC runs on ball bearings, I can't remember what kind of cam bearings are on the CB350.