Cooling System: Description and Operation

CAUTION: Some vehicles cooling systems are filled with Motorcraft Premium Engine Coolant VC-4-A meeting Ford specification ESE-M971144-A (green color). Others are filled with Motorcraft Premium Gold Engine Coolant VC-7-A meeting Ford specification WSS-M97B51-A1 (yellow color). Always fill the cooling system with the same type of coolant that is present in the system. Do not mix coolant types.

The cooling system components are the:
^ block heater
^ fan blade
^ fan clutch
^ fan shroud
^ radiator
^ degas bottle
^ pressure relief cap
^ radiator draincock
^ water pump
^ water thermostat
^ oil filter adapter
^ upper radiator hose
^ lower radiator hose
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 clean, drinkable water.
To maintain the integrity of the coolant and the cooling system:
^ Add Motorcraft Premium Engine Coolant VC-4-A (CXC-10 in Canada, VC-5 in Oregon) or equivalent meeting Ford specification ESE-M97B44R-A (green in color), or Motorcraft Premium Gold Engine Coolant VC-7-A or equivalent meeting Ford specification ESE-M971351-A1 (yellow in color). Do not mix coolant types.
^ Do not add/mix orange-colored Motorcraft Specialty Orange Engine Coolant VC-2, meeting Ford specification WSS-M97B44-D. Mixing coolants may degrade 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.
^ Do not mix with recycled coolant unless it meets with the requirements of Ford specification ESE-M97B44-A or WSS-M97B51-A1. Not all coolant recycling processes meet these Ford specifications. Use of such coolants may harm the engine and cooling system components. Do not mix coolant types.