Went to my car this morning to find ALL of the oil leaked out of my car. The bolt is screwed on tight, and the filter seems tight but there is a little oil drip on it as you can see in the image. The bulk of the oil seems to have come out of the piece underneath it, it was still dripping when I checked it. The piece I'm talking about is the one with the red plug on the end. What is this piece? To fix, do I need to replace? Any help is appreciated.