I'm having a problem with my 1993 nissan pathfinder. I noticed a leak underneath either the radiator or the front part of the engine where I think the pump is. I noticed the leak when I park the pathfinder and this leak happens when the pathfinder is turned off. I also noticed that sometimes it leaks when it is parked and sometimes it doesn't leak so I have no idea what could be wrong.. If anyone has any ideas they would br greatly appreciated... Thanks much... Tyler