How many of you ever notice shiny stuff when you drain a used oil filter? Twice now on two different cars my 2013 Mustang GT 5.0 V8 and my 2012 Nissan Pathfinder 4.0 V6 when removing the used filter into the pan that is all plastic with a hole in the center as the oil comes out of the filter and drips down to the pan hole I see glitter? Metal? Dirt? Both? Anyway when I cut the filters upen they always look clean. Anyone here ever notice this?