I would appreciate any suggestions on removing the oil filter on my Prius. I have the correct oil filter wrench but it is on so tight I cannot loosen it. I am turning it to the left, and the clip on the oil filter casing is not preventing me from turning it. I chalk this up to me getting free oil changes from Toyota. The untrained have not tightened it to specs and now I cannot loosin it. I also discovered that one of the clips holding the plastic flap closed is missing. Does anyone have any suggestions? I do not want to go back to DCH Toyota in NY. They are the worst!!!!