Oil leak

that plate is hidden by the front diff housing, I believe on the passenger side, sort of below the access hole below the throttle body. So probably in the middle at the bottom of the diff. I would wipe down everything underneath and look at it after a drive, short/long idk depends on the leak. I think my 04 is leaking at the oil pump :/ but it's been that way for years. on my TDL

Good one, Walt. Note that front oil pump oil leak is usually a cracked o-ring; but if not, you could try a bottle of oil stop-leak to expand the original o-ring. Usually works....