Spotted a new leak on the truck and reached out to my friend (and Land Rover expert) John Middleton:

Common place for them to leak. Rear transfer case output shaft seal. May need a speedy sleeve on the the output flange. The flange nut also might be loose. Eventually you will get oil on the parking brake shoes. All of mine have leaked or still leak there. If it stops leaking it means the transfer case has run out of oil!

Very hard to find a Land Rover that does not drip some oil. As the tappet brothers proclaimed: “The British were not successful in the computer industry because they could not figure out how to make one that leaked oil.”