2010 Chrysler PT Cruiser Owner Manual - Page 298

MAINTAINING YOUR VEHICLE 297 • If frequent engine coolant (antifreeze) additions are required, or if the level in the coolant recovery bottle NOTE: When the vehicle is stopped after a few miles (a does not drop when the engine cools, the cooling few kilometers) of operation, you may observe vapor system should be pressure tested for leaks. coming from the front of the engine compartment. This is normally a result of moisture from rain, snow, or high • Maintain engine coolant (antifreeze) concentration at 50% HOAT engine coolant (antifreeze) (minimum) humidity accumulating on the radiator and being vaporand distilled water for proper corrosion protection of ized when the thermostat opens, allowing hot engine your engine, which contains aluminum components. coolant (antifreeze) to enter the radiator. Points to Remember If an examination of your engine compartment shows no • Make sure that the radiator and coolant recovery bottle overflow hoses are not kinked or obstructed. evidence of radiator or hose leaks, the vehicle may be safely driven. The vapor will soon dissipate. • Keep the front of the radiator clean. If your vehicle is • Do not overfill the coolant recovery bottle. equipped with air conditioning, keep the front of the condenser clean, also. • Check engine coolant (antifreeze) freeze point in the radiator and in the coolant recovery bottle. If engine • Do not change the thermostat for Summer or Winter operation. If replacement is ever necessary, install coolant (antifreeze) needs to be added, contents of ONLY the correct type thermostat. Other designs may coolant recovery bottle must also be protected against freezing. 7