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Inspection and Verification




Supercharger Cooling

Inspection and Verification

WARNING: Always allow the engine to cool before opening the cooling system. Do not unscrew the coolant pressure relief cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may result in serious personal injury.

NOTICE: Check the coolant and engine oil levels. Top off the coolant level if needed. If there is engine coolant in the engine oil, the cause must be corrected and the oil changed or major component damage can occur.

NOTICE: 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 Supercharger Cooling System Flushing . Failure to follow these instructions may damage the Supercharger (SC) cooling system.

NOTICE: The SC (Supercharger) cooling system is filled with Motorcraft(R) Specialty Orange Engine Coolant. Do not mix coolant types. Mixing coolant types degrades the corrosion protection of Motorcraft(R) Specialty Orange Engine Coolant.

NOTE: During normal vehicle operation, Motorcraft Specialty Orange Engine 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.

1. Verify the customer's concern by operating the engine to duplicate the condition.

2. Inspect to determine if any of the following mechanical or electrical concerns apply.

Visual Inspection Chart






3. If the inspection reveals an obvious concern that can be readily identified, repair it as necessary.

4. Inspect the coolant condition.
1. WARNING: Always allow the engine to cool before opening the cooling system. Do not unscrew the coolant pressure relief cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may result in serious personal injury.

Allow the engine to cool. Once pressure is released, remove the pressure relief cap.

2. NOTICE: The Supercharger (SC) cooling system is filled with Motorcraft(R) Specialty Orange Engine Coolant. Do not mix coolant types. Mixing coolant types degrades the corrosion protection of Motorcraft(R) Specialty Orange Engine Coolant.

Inspect the coolant color:
- Discoloration may indicate that incorrect coolant may have been added to the system. Use of incorrect (green or yellow in color) coolant degrades the corrosion protection of Motorcraft(R) Specialty Orange Engine Coolant. Addition of Motorcraft(R) Specialty Green Engine Coolant may cause the color to appear to be a murky green-brown color. The addition of Motorcraft(R) Premium Gold Coolant, however, may not change the color or appearance of the orange colored coolant. Detection of contamination with Premium Gold Engine Coolant is determined by the presence of nitrite. If contamination with Motorcraft(R) Premium Gold Engine Coolant is suspected, test the coolant with the 3-Way HD Antifreeze Coolant Test Kit. Follow the directions in/on the packaging with regard to nitrite testing. If the incorrect coolant has been added to the cooling system, flush the system and refill with the correct mixture of distilled water and Motorcraft(R) Specialty Orange Engine Coolant. Refer to Supercharger Cooling System Flushing .

- A darker orange with the presence of debris could indicate a commercially available stop leak may have been used and could result in loss of coolant flow to critical parts of the engine. If sediment is present in the coolant sample, flush the system and refill with the correct mixture of distilled water and Motorcraft(R) Specialty Orange Engine Coolant. Refer to Supercharger Cooling System Flushing .

- A light or reddish brown color indicates that rust may be present in the cooling system. Flush the system and refill with the correct mixture of distilled water and Motorcraft(R) Specialty Orange Engine Coolant. Refer to Supercharger Cooling System Flushing .

3. If the coolant appearance is acceptable, test the coolant freezing point range with the Coolant/Battery Refractometer. The freezing point should be in the range -50°C (-58°F) to -26°C (-15°F). If the vehicle is driven in cold climates less than -37°C (-34°F), it may be necessary to increase the coolant concentration to get adequate freeze protection.
- Maximum coolant concentration is 60/40 for cold weather areas.

- Minimum coolant concentration is 40/60 for warm weather areas.

4. Check the coolant system conditions:
- If the coolant level is low, add the specified coolant mixture only.

- If the coolant tests weak, remove some of the coolant and add undiluted coolant until the readings are within acceptable levels.

- If the coolant tests strong, remove some of the coolant and add distilled water until readings are within acceptable levels.

5. If the concern remains after the inspection, determine the symptom(s). GO to Symptom Chart Symptom Related Diagnostic Procedures.

6. Verify the cooling system is correctly filled and bled. Refer to Supercharger Cooling System Draining, Filling and Bleeding Supercharger Cooling System Draining, Filling and Bleeding.
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