Hey there- Major newbie here. 1999 Grand Cherokee inline 6 w/ 4.0.
195,000 Have a radiator fluid leak when parked downhill. Not actual radiator as I never hear steam.. slow drain from reservoir due to downhill parking. Radiator always full as I top off res.
Seems to be possibly the valve where you drain the radiator? Could downhill parking put more "pressure" on that to cause leak.? It does do it on occasion on flat ground but not near as bad & not all the time.
Also- to make matters worse- I have water (not radiator fluid) in front right floorboard. Top of carpet where AC drain goes into firewall is dry. Just wet at floor & heavier it seems, toward door. I don't think it's a rain leak but who knows.
I have to drive from KC to OK City this Mon & back Tue. I can live w.o AC if that is THAT problem.. but the radiator has me puzzled. I have not used any stop leak, etc. I have a bottle & also the tablets that dissolve just in case. Just replaced serpentine belt as well. Thanks for looking at my post.