hi guys, ive recently started getting good size puddles under my car after it sits for a while. Its coolant, but its coming from the center of the car up against the firewall. The only thing I see back there that coolant flows through is the heater hoses which appear dry. I thought possibly a bad head gasket? Any thoughts on what it could be? Temp doesnt get hot, i run about ~180 degrees constantly, the temp gauge will jump up and down from about 160-190 while im driving but never gets over 190. Thanks for any thoughts guys