I stopped in Wal-Martlastnight and checked a few of the non Ecore Super Tech filters.
The one 7317 on the shelf did not have the holes punched through(slits opened).
Two of another number next to the 7317, one "OK" one no holes punched through.
6607(?)several, holes variable, punched through on one side, not the other. Not enough area to pass all the oil.
This doesn't appear to be an isolated incident of a filter slipping past QA. It's country wide, across multiple filter numbers. That says to me that no QA is being done at all.
The consequence of no holes is that filter would be passing all of the oil through the by-pass all the time. I wonder how many thousands of cars are running around out there with no oil filtration all for the want of spending less than a dollar more on a decent filter?
Ed