When the entire cooling system is drained, the following procedure should be used to ensure a complete fill.
- Install the block drain plug, if removed, and close the draincock. With the engine off, add antifreeze to the radiator to a level of 50 percent of the total cooling system capacity. Then add water until it reaches the radiator filler neck seat.
On 2.5L engines, remove the vent plug on the water connection outlet. The vent plug must be removed before the radiator is filled or the engine may not fill completely. Do not turn the plastic cap under the vent plug or the gasket may be damaged. Do not try to add coolant through the vent plug hole. Install the vent plug after filling the radiator and before starting the engine.
- Install the radiator cap to the first notch to keep spillage to a minimum.
- Start the engine and let it idle until the upper radiator hose is warm. This indicates that the thermostat is open and coolant is flowing through the entire system.
- Carefully remove the radiator cap and top off the radiator with water. Install the cap on the radiator securely.
- Fill the coolant recovery reservoir to the FULL COLD mark with antifreeze, then add water to the FULL HOT mark. This will ensure that a proper mixture is in the coolant recovery bottle.
- Check for leaks at the draincock, block plug and at the vent plug on 2.5L engine.