Quote Originally Posted by EAD15 View Post
If there was any oil in the wells where the spark plugs go BEFORE you pulled them out, you have a bad valve cover gasket. Judging by the "old" plug pictures, you had oil in the spark plug wells.

Replace your valve cover gasket
Well, woke up, saw your message, went to the parts store and bought a new one. Also took some pictures, the wells looked clean, but changed it anyways just to be sure, I had already bought it. Here are the pictures: https://postimg.cc/gallery/Wb61YYn

Thanks a lot!!