Mine did the same thing from the drain plug. It dribbled all over the place and I thought it must be coming from all over. Nope, just the drain plug. Just add a little teflon tape or gasket sealant to the threads and you should be okay.

Mine specified a synthetic only. Not sure why mineral oil?

Jeff


My 1953 Chevrolet
1947.1 Gallery
1972 C-10 1/2 Ton & 1972 C-30 1 Ton