The FL910 (and FL500) have not been a problem filter from postings. As said, the 820s has been the biggest failure, but there have been other filters made by Pennzoil (I had a PZ-37 tear) that have had issues.
Originally Posted by hallstevenson
You realize any brand and model of filter can have a defective one slip through and end up on someone's car. Inspecting it (cutting it apart) after it's been on a car for thousands of miles accomplishes what ? You find a defect then, so what do you do ? Worry ? Tear the engine apart to look for damage ? Do nothing and hope for the best. You don't know if a defect was in there from day one, if it occurred (3) days prior to removing it, if it caused harm or was absolutely harmless.
Cutting it apart lets me know if the filter worked correctly. If I find a torn filter, I am a little concerned, but not enough to be an idiot and tear my engine apart. I don't know when the defect happened.
I do know when I see a pattern of a particular brand to fail that I will quit using that product.