I changed my oil for the first time on the SHO. what a pain! the sumabish previous owner must have used an impact gun putting the oil filter on. after fighting it for awhile and even spraying PB Blaster around the gasket, I decided to run to wally world and get a oil filter wrench. I had to use my 1/2" drive ratchet to get the filter off. It started twisting the body of the filter before the filter started to loosen. ughh