2002 Chrysler 300 Coolant Leak

What I recommend you do is pressurize the cooling system when the engine is cold and you can check closely for the leak. You will need a pressure tester. Most parts stores will lend or rent them to you. If you still can't find the leak when it is under pressure, a dye is made to add to the coolant. Once added, you will drive the vehicle or run the engine to circulate the dye and then check for leaks using a black light.

Let me know if you have other questions. NOTE: I am assuming that your leak is external and you see coolant on the ground. If that is not the case and coolant is being consumed, let me know.