Originally Posted by
pizzaguy
If he didn't put the o-ring in the proper place at the top of the threads of the filter carrier, a leak will result. There was a little paper sheet with the filter that shows the position the ring belongs in.
Note arrow "1", the position of the O-ring is critical; many beginners place it at the rim, in this photo, that means the ring is to the left near the rim and not in the channel provided.
Also shown is a collapsed paper filter (yellow arrow), which is why we do not use paper filters.
He used all of the orings and proper filter which I had supplied. The leak appears to be on the passengers side in front. May be unrelated to the oil change but he copped to not checking oil as it was added.