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SERVICING AND MAINTENANCE 427 Checking Coolant Level — 3.6L Engine The level of the coolant in the pressurized coolant bottle should be between the “MIN” and “MAX” range on the bottle when the engine is cold. there is no need to remove the cap unless checking for coolant freeze point or replacing engine coolant (antifreeze). Advise your service attendant of this. As long as the engine operating temperature is satisfactory, the coolant bottle need only be checked once a month. When additional engine coolant is needed to maintain the proper level, it should be added to the coolant bottle. Do not overfill. Checking Coolant Level — 5.7L Engines With the engine off and cold, the level of the engine coolant should be between the ADD and SAFE range on the dipstick. reservoir neck. Coolant Reservoir Dipstick 3. Check the coolant level on the dipstick. The radiator normally remains completely full, so there is no need to remove the radiator cap unless checking for engine coolant (antifreeze) freeze point or replacing engine coolant. Advise your service attendant of this. As long as the engine operating temperature is satisfactory, the coolant bottle need only be checked once a month. maintain the proper level, it should be added to the coolant bottle. Do not overfill. Cooling System Notes NOTE: When the vehicle is stopped after a few miles/kilo - meters of operation, you may observe vapor coming from the front of the engine compartment. This is normally a result of moisture from rain, snow, or high humidity accumulating on the radiator and being vaporized when the thermostat opens, allowing hot engine coolant (antifreeze) to enter the radiator. shows no evidence of radiator or hose leaks, the vehicle may be safely driven. The vapor will soon dissipate. Do not overfill the coolant expansion bottle. Check the coolant freeze point in the radiator and in the coolant expansion bottle. If engine coolant needs to be added, the contents of the coolant expansion bottle must also be protected against freezing. If frequent engine coolant additions are required, the cooling system should be pressure tested for leaks. Maintain engine coolant concentration at a minimum of 50% OAT coolant (conforming to MS.90032) and distilled water for proper corro - sion protection of your engine which contains aluminum components. 8 |