Oil leak
Changed oil and filter about a week ago, and now have a small leak from filter area. Car is a jdm bug sti which I think has a "remote" oil filter set up as standard? When I went to put the new filter on I noticed that the central threaded stud that the filter screws on to was loose, I tightened it up with a deep socket as I was sure it should not have been loose. Is there an "o" ring or seal that could be leaking above the filter itself? Q. Do I have to drain all the oil from the sump before removing the oil filter to investigate? thanks in advance for any help. Paul.
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