Changed the oil in my Corolla for the first time. The filter container was supposed to have, according to YouTube, a little retaining clip to keep it from somehow backing out. I can't imagine how that could happen, but at any rate, mine did not have the clip, nor did the new filter cartridge have one with it. Is that normal?
Might add that this filter arrangement is the dumbest thing I have heard of. Why they would depart from the old standard of a screw on cartridge is just amazing to me.