Once you decide to take care of your car yourself, you start to run into things idiot mechanics did to it before. One of such idiocies is a stuck oil filter. It happens because the ignorant shop boy used all his might to tighten the filter. Now you need a special tool to unscrew the filter - or you might as well tried one old trick. I just had to deal with such a filter on a recently bought used car, and made a video showing you this trick.