Does anyone know of an actual study looking at oil filter quality? I don't know how a non-Toyota oil filter would cause "knocking" which I would think would be valves tapping from dry seals. We all have anecdotal evidence, but I mean real evidence. Even searching for reviews and comparisons you find mostly places ranking oil filters based on their advertised qualities and not their objective quality. If Toyota's filters really are the best, then great, but the logic of "Toyota approves so I approve" often doesn't always hold up when we look at other things on our trucks, such as deleting certain systems like ABS or EGR or whatever.
@baldilocks would you happen to have a link or author?