You explained it well but I have one thing to add if I may. I have a 2008 and my filter is in same location as yours and also made of plastic. Instead of using a 1 1/16 socket to remove filter cover I found it much better to use a band type filter removal tool that you can buy for a couple dollars at any auto parts store. The type that you use to remove a normal canister car filter. You put your socket wrench on band and it gets tighter the more pressure you put on it. My plastic filter cap was on so tight it would have broken if I would have kept trying to use socket to free it up. No chance of damage with band type tool. Give it a try. (I am not sure if this is the proper way to reply.) Marty