From last few days the radiator drain plug of my cuore (2006) leaks coolant very slowly. I tightened it a bit (although it seemed enough tight already) and it seemed to drip a little more and but after one day I see no more dripping (Strange huh). Apparently the drain plug seems fine (no cracks). I think there is also an O ring inside.
Do I need to replace the drain plug or O ring?? Any precautions on taking it out for inspection?