Unfortunately the meaningful information- x% of y size particles- is not offered up by manufacturers very often. Cutting up filters and chatting about one’s impressions is a popular pastime these days, but not a substitute for real data.
I trend toward buying the better filters with synthetic media, out of the hope that the filtration is somewhat improved, but hope is all I have.
I agree that given no hard facts on filter efficacy, reduced oil change intervals is about all we can control.
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