Open the drain plug till it runs dry and flush it out till the just plain water coming out of the drain hole-close it and fill it up with the correct coolant
Bleeding the Cooling System
Allow the engine to cool down to ambient temperature.
Open the radiator cap.
Turn the engine on and turn the heat to max. Turning the heat to max allows the radiator fluid to circulate through the cooling system to ensure that all air pockets are eliminated from the system.
Rev the engine to 2,000 RPMs and hold for approximately 10 to 15 seconds and repeat two to three times. This will allow the radiator fluid to circulate throughout the whole system and ensure that all air pockets exit the radiator.
Gently squeeze the upper radiator hose approximately 6 to 12 inches from the radiator cap. Squeeze about five times. This will bring more air pockets up and out of the radiator and will ensure that the engine does not overheat.
Saturday, February 4th, 2012 AT 7:00 PM