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 15W-40 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 15W-40 oil.