So i got to spend my day replacing my thermostat housing. The o-ring that was in the housing was blown apart and the housing was mising a chunk of the interior that surrounds the o-ring. At least i knew i was right when I replaced it b/c of leaking coolant (a small stream while running). All in all, i got put back about 50 bucks for housing, another o-ring (just to be safe), and coolant.
Anyone else had to replace their housing?