"Brian,
I can not speak for a
"Brian,
I can not speak for anyone but myself, but I believe Fram makes their cartridges of too thin metal. On different vehicles using different model filters, I have had several Fram brand filters bloat/swell from the internal oil pressure, and thus start leaking heavily around the seal. In one case the filter almost fell off as when warped it was no longer tight against the mount.
Fram just isn't worth the risk to me and is permanently off by buying list. I cannot testify for or against the filter efficiency, just the problem I had."