Just put on my a Armondo oil-pan, and had a minor drip around the plug. The flat brass washer that came with the plug didnt do the trick. (and I undfortunately may have tweaked it a bit too much.......kinda suprised actually as I didnt dog it on).
THE FIX........ Used a old-school plastic oilnut washer on the nut, along with a small 1/2" O-ring before it (not a rubber washer, but rubber O-Ring). It seems that this pan plug opening is not flush so, the O-Ring takes up that space nicely.
I might suggest this FIRST before you try what I had done. (trust me I didnt put that much pressure on the nut to start with, but also was not going to remove the pan either).
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