Just to add some references to this thread for future readers.
When I googled "oiled air filters test" these were the first three to be displayed. None of these were the car mag and Consumer Reports mag tests I referenced in another posting. The conclusions in each were consistent with each other and what I remembered.
I did not go beyond the first three because the references were to data from makers of oiled filters who are presumed to have a financial interest in the way they present things.
Air Filtration Test Bob The Oil Guy
http://www.nicoclub.com/archives/kn-vs-oem-filter.html Nissan Club Member
Air Filter Comparison Study - GM Truck Central
Almost everything we choose is a trade off. It is OK to have different priorities.
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