I had that happen to my 69' oil pan. What i did was drain the oil.I then degreased and cleaned the area well.I then sanded the area and applied a skim coat of JB Weld to the area.Let it harden and then lightly sanded the skim coat and then applied another thicker coat of JB Weld to it.It never leaked again as long as i owned it.JB Weld is also paintable so if you want you can paint it to match the rest of the pan.
David
http://FirstGenFirebird.org/show/closeup.mv?CarID=571 If i don't get this car back on the road soon i'm gonna go postal! On a quest for FGF knowledge 1968 Pontiac Firebird Convertible 1969 Oldsmobile Cutlass "S" Convertible *Sold*
