Anyone ever heard of Defense Oil Filters before?
I have. It was/is a Fram made value/jobber tier filter line. They used to be sold around here at store named Magic Mart. The MM has since closed locally and it appears all stores now. It was similar to Big Lots.
When Fram and Champ had their brief alliance, they went from Fram to a Champ made ecore format line. It would have been similar the previous Fram Core line. If they still being made I assume like the Core filters they have gone back to all Fram construction.
Defense and QS look like they survived to get the job done. The ST obviously previous Wix made for filter.
Thanks for c&p.