2010 Jeep Wrangler Owner's Manual - Page 476

MAINTAINING YOUR VEHICLE 475 When additional engine coolant (antifreeze) is needed to maintain the proper level, it should be added to the coolant bottle. Do not overfill. Points to Remember engine coolant (antifreeze) needs to be added, the contents of the coolant recovery bottle must also be protected against freezing. • If frequent engine coolant (antifreeze) additions are required, or if the level in the recovery bottle does not NOTE: When the vehicle is stopped after a few miles/ drop when the engine cools, the cooling system should kilometers of operation, you may observe vapor coming be pressure-tested for leaks. from the front of the engine compartment. This is normally a result of moisture from rain, snow, or high • Maintain the 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. If an examination of your engine compartment shows no • Make sure that the radiator and coolant recovery bottle 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 equipped with air conditioning, keep the front of the • Do not overfill the coolant bottle. condenser clean. • Check the engine coolant (antifreeze) freeze point in the radiator and in the coolant recovery bottle. If 7