ill try the pressure check bc jared/sam i do see yalls point if it was from the hose it would explain all the spots on the inner fender well and all the coverage from it.
i believe the cracked case but hey spend a little bit for the pressure check do it, then if it doesnt help, im only out a little bit and then get a radiator and idk what it is about me but ill probably end up replacing the upper, lower and other heater hose bc id be replacing the radiator so might as well put some new hoses on as well.
can i put little caps on the openings im not using?