I was looking through the shelf of Motocraft FL400s filters at W mart, and all of the threads, while nicely cut, were loaded with metal fillings. It was bad enough to make me buy a Fram.....Extended Guard (only good fram
).
My app calls for an FL910, but the new shorter fl400s now fits my application....but the threads, holy cow. I prefer my filters without their own wear metals thank you.
For those wondering, the XG3614 (Fl910 cross reference), has wonderful threads. This will be the second XG I have purchased. First one is still on the car. Never figured myself as a Fram user...go figure.
edit
I just read the other thread where this very issue is discussed (second page). I read it AFTER I posted in this one...
Anyways, maybe the flakes aren't that big a deal? Most of the other replies were people saying they simply wipe them out. I don't know, I never typically notice flakes on any of the other filters I have purchased, and those include M1, Fram, Wix (Napa Gold), Purolator P1 (blue cans), Motorcraft, Bosch, STP, and Supertech, (Puro, Wix, Champ, and Honeywell).