it's an external leak, at least in large part. it's not going up (bottom of the hood is almost entirely clean, nothing out the fenders), but from the front swaybar back it's oily underneath to the point that the front edge of the trailer had enough on it for the jack to drip a bit.
got plenty of black on my pants screwing around with the POS winch last night. had another couple local things to do and the winch pretty well failed me. got one truck 90% on, and then could barely move and couldn't release either. that made a 1 hour project into a 3 hour tour, not fun.