Supercharger Cooling

NOTICE: The SC cooling system is filled with Motorcraft® Orange Antifreeze/Coolant. Do not mix coolant types. Mixing coolant types degrades the corrosion protection of Motorcraft® Orange Antifreeze/Coolant.

NOTE: During normal vehicle operation, Motorcraft® Orange Antifreeze/Coolant may change color from orange to pink or light red. As long as the coolant is clear and uncontaminated, this color change does not indicate the coolant has degraded nor does it require the coolant to be drained, the system to be flushed, or the coolant to be replaced.

NOTE: Stop-leak style pellets/products must not be used as an additive in this engine cooling system. The addition of stop-leak style pellets/products can clog or damage the cooling system, resulting in degraded cooling system performance and/or failure.

NOTE: The air charge that exits the SC is cooled by the SC cooling system.

The SC cooling system components include the:

• CAC .
• radiator.
• pressure relief cap.
• degas bottle.
• electric coolant pump.

The coolant flows:

• from the CAC to the degas bottle.
• from the degas bottle to the coolant pump.
• from the coolant pump to the radiator.
• from the radiator to the CAC .

For the coolant flow diagram, refer to Section 303-03A .

Coolant provides freeze protection, boil protection, corrosion protection and cooling efficiency to the SC cooling system components. In order to obtain these protections, maintain the coolant at the correct concentration and fluid level in the degas bottle.

When adding or topping off the engine coolant:

1. measure the coolant concentration in the vehicle using Coolant/Battery Refractometer 300-ROB75240 or equivalent.
2. determine the concentration desired based on the vehicle duty cycle of extreme hot or cold operating conditions.
3. add/top off or adjust the coolant as follows:
   1. for concentrations measured 48/52 to 50/50 (equates to a freeze point between -34°C (-30°F) and -37°C (-34°F)), use Motorcraft® Orange Antifreeze/Coolant Prediluted to maintain a coolant concentration in this same range.
   2. for all other concentrations, use Motorcraft® Orange Antifreeze/Coolant Concentrated and/or distilled water to get to the desired concentration. Refer to Supercharger Cooling System Draining, Filling and Bleeding .

When refilling the engine coolant after a flush procedure, use a mixture of Motorcraft® Orange Antifreeze/Coolant Concentrated and distilled water to get to the desired concentration.

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

• add Motorcraft® Orange Antifreeze/Coolant or equivalent. Do not mix coolant types.
• do not add or mix with any other type of engine coolant Mixing coolants may degrade the coolant's corrosion protection.
• do not add alcohol, methanol or 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 originally equipped with Motorcraft® Orange Antifreeze/Coolant since a Ford-approved recycling process is not yet available.