Quote:

A buddy of mine recently had a K&N oil filter fail immediately after installation on a GM product. He changed the oil, pulled off an AC Delco filter, put on the KN, fired it up and no oil pressure. Tried multiple restarts, nothing. Put the old/used Delco back on, and had instant oil pressure.

Not defending RB in any way, whatever it is, is what it is...but it might be a crappy oil filter



Sounds like the oil filter is working pretty good since it's full of bearing material.