Originally Posted by
GraphiteGhost
.

As explained earlier, do not use the top slot on the filter cap. That top "O" ring goes in the SECOND slot on the top. This has happened to many members who changed their oil before. Second slot not the top slot.
Be careful tightening the cap too much, you might crack it (lets hope this is not what happened?).
.
Proper tightening torque is 25 N-m. Cap has this stated on top.