Well I'm not sure if that's gonna fix my big problem but I'm pretty sure it's leakin cause i can smell coolant with the heater on. The big problem I'm havin is I think i'm gettin too much pressure built up in the cooling system and it's pushin coolant into the overflow jug and it's never done that before, I'm just not sure why.
Replacing the heater core is not tooo bad, but it is a pain.. I recommend buying a good oem core from dodge.. I had to replace mine twice.. The first time I replaced it with a core I bought from rock auto, then it started leaking 5 months later.. I replaced it with a unit fom dodge.. Good luck..