Engine Cooling - (Hybrid): Maintenance Mercury Mariner II

Cooling System Draining, Filling and Bleeding

Special Tools Illustration Tool Name Tool Number RADKITPLUS 078-00497

Scheme 30

Material

Draining

Note. The coolant must be recovered in a suitable, clean container for reuse. If the coolant is contaminated, it must be recycled or disposed of correctly. Using contaminated coolant may result in damage to the engine or cooling system components.

Note. The engine cooling system is filled with Motorcraft Premium Gold Engine Coolant. Mixing coolant types degrades the corrosion protection of Motorcraft Premium Gold Engine Coolant.

Note. The addition of Cooling System Stop Leak Pellets darkens Motorcraft Premium Gold Engine Coolant from yellow to golden tan.

Note. Less than 80% of coolant capacity can be recovered with the engine in the vehicle. Dirty, rusty or contaminated coolant requires replacement.

1. Release the pressure in the cooling system by slowly turning the pressure relief cap one-half turn counterclockwise. When the pressure is released, remove the pressure relief cap.
2. Remove the splash shields.
3. Place a suitable container below the radiator draincock. Open the draincock and allow to drain. Close the draincock after draining.
4. Install the splash shields.

Cooling System Flushing

Material

Note. Dispose of old coolant and flushing water contaminated with antifreeze and cleaning chemicals in accordance with local, state or federal laws.

1. Remove the radiator. For additional information, refer to «Radiator»(ref-292201-S05572415342008073100000) .
2. Backflush the radiator with the radiator in an upside-down position and a high-pressure hose in the lower hose location.
3. Remove the thermostat housing. For additional information, refer to «Thermostat Housing»(ref-292201-S05199977082008073100000) .
4. Position a high-pressure water hose into the engine through the engine return and backflush the engine.

Scheme 31