No reason to think it isn't the same problem; it is the same tractor built at the same place. Typically, the block drain fitting had no sealant applied to its tapered threads at installation. This has been going on sporadically since the last of the NH 17/1920 production. You'd think it would be an easy one to solve, but then........................
Rick, what is the proven fix??? On my old Ford 1720 I think I used a combination of super blue silicone sealant and teflon tape, and I think the present owner (my Dad) says it's still holding. My TC 40D was fixed by the dealer with the new plug and some thread sealant paste and now one year later it's leaking again. /forums/images/graemlins/confused.gif