[JFP in PA]

One can make anecdotal claims all day, but that's hardly scientific. I'd like to see some hard data that shows the benefit, that these engines show less wear due to a screw-on filter system over the OEM.

Well, considering we often average about 75 to 100 oil changes a week, we open up and look at every filter, and provide used oil analysis for many of our clients at every oil change; I would hardly call my shop's opinions "anecdotal"..................