Hi.I was having trouble getting my oil filter off du to slippage so I found an excellent one on amazon that will never slip .My mistake was I didn't get it then and now I cant remember what it's called . Does any one know what I am referring to ,or have a slip proof recommendation ? When I tighten them I do just as instructions say but a guy still needs a slip proof tool that will get into that sort of tight spot on the 4.6 engine .Thanks to any replies.