Cooling System: Service and Repair

CAUTION: Less than 30 percent, coolant concentrate may cause engine corrosion and overheating.


NOTE: Remove vent plug on water bypass elbow (located on intake manifold behind water outlet connection).


CAUTION: The vent plug must be removed before radiator fill or the engine may not fill completely. Do not turn plastic cap under vent plug or the gasket may be damaged. Do not try to add coolant through vent plug hole. Install vent plug after filling radiator and before starting engine.


1. Install block drain plug, if removed, and close draincock located at bottom of radiator. With engine off, add 50 percent of total coolant system capacity with specified coolant concentrate to radiator. Then, add water until it reaches the radiator filler neck seat.

2. Install radiator pressure cap to first notch to keep spillage to a minimum.

3. Start and idle engine until upper radiator hose is warm. (This indicates thermostat is open and coolant is flowing through entire system.)

4. Remove cap carefully and top off radiator with water.

5. Install cap on radiator securely.

6. Fill coolant recovery reservoir to FULL COLD mark with specified coolant concentrate, then add water to FULL HOT mark. This will ensure a proper mixture in coolant recovery reservoir.

7. Check for leaks at radiator draincock, block plug, and vent plug.