Probably *the* most important part of an oil change is verifying you’re not double-gasketing the new filter (i.e., old gasket didn’t stay with filter bracket) - rare to happen, but when it does, can be disastrous if not noticed quickly. When double gasketed, they can dump a bunch of oil on the ground in a hurry. Very seldom do they happen to almost line up and only leak a little. Even if they do, the one that’s not constrained by the filter grove can blow out from pressure. Like a dam busting.