The 3.8 does have troublesome internal leak potentials : the lower air intake gasket and seal set, and the front engine cover gasket and coolant pump-port seals. Both of these seal sets, if leaky, will pass coolant into the crankcase.
The coolant pump shaft has a hot liquid seal ... ceramic against polished metal. There a weep hole, though the housing ... usually on the bottom of the shaft, that lets coolant that leaks/passes the seal ....flow to the outside world. This is to protect the bearing cartridge from coolant.