changed the oil yesterday in my grandmaws 08 accord, Maxlife 5W20 and a Fram Ultra 7317, upon taking the filter out the box, which appeared to never have been open, i noticed they had some gray grainy material around the inlet holes. i wiped it off as best as i could, didnt see any at all down the center tube and the inside of the filter looked squeaky clean. I figured anything that got through would be caught by the filter. Was this most likely from the manufacturing process?