HELP, Coolant loss, Getting Hot
I have a 2003 330xi - Having some issues here, the car is getting hot if I do a lot of town driving and sit, I've noticed the temp gauge goes up then back to 50% straight up and down. Well. Sometimes my low coolant light comes on.. I go somewhere today and my car is getting hot from sitting and idling, I pop the hood and see coolant leaking out of my cap - My cap is tight though? Ive already replaced the crap that the overflow screw is attached too, with the hoses. I seem to be putting coolant in it atleast once a week no more than 2 times. I have never had the temp gauge in the red but its been close... What could this be? I am dumb founded..... Car has 149k miles - NO check engine lights and passes every OBD scan.
Any ideas? Thanks