Cooling System: Description and Operation

Engine Cooling

NOTICE: The cooling system is filled with Motorcraft(R) Premium Gold Engine Coolant or equivalent meeting Ford specification WSS-M97B51-A1 (yellow color). Always fill the cooling system with the manufacturer's specified coolant. If a non-specified coolant has been used the cooling system must be chemically flushed. Refer to Cooling System Flushing. Failure to follow these instructions may damage the engine or cooling system. Cooling System Flushing

NOTE: If cooling system stop leak pellets are used, Motorcraft Premium Gold Engine Coolant may darken from yellow to golden tan.

The cooling system consists of the following components:

- Block heater (if equipped)
- Engine Coolant Temperature (ECT) sensor
- Fan blade, fan motor and fan shroud assembly
- Radiator
- Pressure relief cap
- Radiator draincock
- Coolant pump
- Coolant temperature indicator sender unit
- Coolant thermostat
- Oil filter adapter
- Radiator overflow hose

The radiator allows excess engine heat to be transferred to the air.

Radiator tanks cannot be repaired.

Engine coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the engine and cooling components. In order to obtain these protections, the engine coolant must be maintained at the correct concentration and fluid level in the degas bottle.

When adding engine coolant, use a 50/50 mixture of engine coolant and distilled water. A coolant concentration of 50% will provide freeze point protection down to -37°C (-34°F).

To maintain the integrity of the coolant and the cooling system:

- Add Motorcraft(R) Premium Gold Engine Coolant or equivalent meeting Ford specification WSS-M97B51-A1 (yellow color).
- Do not add or mix different coolant types. Mixing coolants degrades the coolant's corrosion protection.
- Do not add alcohol, methanol, brine or any engine coolants mixed with alcohol or methanol antifreeze. These can cause engine damage from overheating or freezing.
- Ford Motor Company does NOT recommend the use of recycled engine coolant in vehicles equipped with Motorcraft(R) Premium Gold Engine Coolant since a Ford-approved recycling process is not yet available.


Coolant Flow Diagram - Without Oil Cooler

NOTE: Black arrows indicate hot, white arrows indicate cold.











Coolant Flow Diagram - With Oil Cooler

NOTE: Black arrows indicate hot, white arrows indicate cold.