System Overview

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Always fill the cooling system with the manufacturer's specified coolant. Chemically flush the cooling system if a non-specified coolant has been used. Refer to COOLING SYSTEM FLUSHING - WITHOUT FUEL OR TRANSMISSION FLUID CONTAMINATION . Failure to follow these instructions may damage the engine or cooling system.

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

The secondary cooling system uses coolant flowing in a circuit separate from the primary engine cooling system. This system cools the exhaust gasses for the EGR system, the transmission fluid, the fuel, and the air charge entering the engine. A secondary engine-driven coolant pump provides for coolant flow. A secondary, 2-stage radiator is mounted in front of the primary engine cooling system radiator. Two thermostats, one mounted on each side of the secondary radiator, operate independently to regulate the temperature of the coolant flowing to the various components.

System coolant provides freeze protection, boil protection, cooling efficiency and corrosion protection to the cooling components. In order to obtain these protections, maintain the coolant 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% provides freeze point protection down to -37°C (-34°F).

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

NOTE: With the engine cold, fill vehicles to within the cold fill range shown on the degas bottle. This fill level will allow for coolant expansion. Overfilling the degas bottle may result in damage to the pressure cap, which can cause the system to overheat.

Add Motorcraft® Orange Antifreeze/Coolant. Do not mix coolant types. Mixing coolants may degrade the coolant's corrosion protection.
Do not add alcohol, methanol, brine or any coolants mixed with alcohol or methanol antifreeze. These can cause damage from overheating or freezing.
Do not mix with recycled coolant. Use of such coolants may harm the cooling system components. Do not mix coolant types.