I was checking the followers of a friends car and notice that the where the cam cover mates, there was an uneven nick. So I sanded it down a little with some sandpaper that was medium-fine. Some of that dust from the sandpaper went into the cam area, so I sprayed it off with oil afterwards, to flush it to the Oil Pan. He had to go to work shortly after, so we couldnt' do an oil change as we didnt have the oil.
Question is, does this sandpaper grit get caught by the oil filter or does he really need to change his oil ASAP? I figured it doesnt matter, but now that its the weekend, he has time to change it.