Here is a link to at least the indirect text I remember about that guy who did the oil filter study on his own. I say indirect, because the link to the original website where he had the actual study is broken.
http://www.scuderiaciriani.com/rx7/oil_filter_study/
This will open your eyes about Fram and other that use Fram as a relabel.
http://www.scuderiaciriani.com/rx7/oil_filter_study/
This will open your eyes about Fram and other that use Fram as a relabel.