When my engine went south last year, the first thing they suspected was the Fram filter. There have been issues where the filter came apart and the little pieces were being sucked around the engine, clogging things up.
That wasn't the issue, in my case, thankfully. Otherwise, I wouldn't have gotten a new engine. The Motorcraft filters are a little different, something about the way they flow, so now I use Motorcraft exclusively. That's not to say are aren't good filters out there.
While, I never found out the reason why my cylinder heads weren't getting oil, the technician Ford sent out from Detroit seemed to suspect the block casting failed internally, by-passing the usual oil delivery routes.