Is it possible to get some meaningful performance data on all of these filters?
I'm under the belief that materials used to build filters varies batch to batch so building in premature oil changes to a machine's maintenance schedule is wise.
It's funny. People cut open filters, count the pleats, bend the ADBV etc.
No one conducts an experiment to see if the media is good or actually tests the ADBV.
FOR EXAMPLE: I have seen AC Delco filters have held back oil whenever I remove them because a flood of oil follows removal.
Cheers