The steel tubing for the antifreeze that goes from the engine and about half way back towards the rear heater rusted through and leaking antifreeze. The tubing cost approximately $170.00 and with labor would cost around $500.00. We bought the vehicle new. Past the rusted section, the tubing is aluminum and cannot rust. The dealer said it is a common problem, I say Chrysler Corp. should replace it free. Four and a half years old, this is outrageous.