I have for your amusement a Briggs & Stratton 492932S oil filter dissection. Filter was installed on my Cub Cadet with a Kohler 7000 Series 23HP motor. Was in service for 100 hours with Delvac 15w40 oil used. No idea on COO. Everything seems to have held up fine and ADBV was still pliable and not stiff. Replaced with a John Deer AM125424 filter and more Delvac 15w40 oil.