2025 Ford Transit: Coolant Capacity & Type

The 2025 Ford Transit typically holds around 14 quarts (13.25 liters) of coolant in its cooling system, though this can vary slightly by engine. Maintaining the correct coolant type and level is crucial for the longevity and efficient operation of your Transit.

Quick Answer

• Total Cooling System Capacity: Approximately 14 quarts (13.25 liters)
• OEM Coolant Spec: Ford Yellow Antifreeze/Coolant, meeting Ford Specification WSS-M97B57-A2. This is a Hybrid Organic Acid Technology (HOAT) coolant.
• Mix Ratio: 50/50 prediluted or mix 50% concentrate with 50% distilled water.

Capacity by Engine Option

While specific 2025 data may be pending, based on previous generations and typical Ford engine configurations for the Transit, capacities are expected to be in a similar range:

Always consult your owner's manual for the most accurate and up-to-date specifications for your specific 2025 Ford Transit configuration.

Flush Interval

Ford generally recommends the following coolant flush intervals for vehicles using WSS-M97B57-A2 coolant:

• Normal Duty: Every 10 years or 200,000 miles, whichever comes first.
• Severe Duty (e.g., heavy towing, extreme temperatures, dusty conditions): Consider an earlier flush, possibly around 5 years or 100,000 miles. Always refer to your owner's manual for severe duty recommendations specific to your vehicle.

Regular inspections of coolant levels and condition are always recommended, regardless of mileage or time.

How to Refill & Bleed

• Safety First: Ensure the engine is completely cool before attempting to open the cooling system. Wear appropriate personal protective equipment, including gloves and eye protection.
• Drain: Locate the radiator drain plug (petcock) at the bottom of the radiator and open it to drain the old coolant into a suitable container for recycling. Some models may also have engine block drain plugs.
• Flush (Optional but Recommended): After draining, you can flush the system with distilled water until the water runs clear. Avoid using tap water due to mineral content.
• Close Drains: Securely close all drain plugs.
• Refill: Slowly pour the new 50/50 prediluted Ford Yellow Antifreeze/Coolant into the coolant reservoir or radiator fill neck until it reaches the MAX fill line. Do not overfill.
• Bleeding Air: Air pockets in the cooling system can cause overheating. Start the engine with the heater on full blast (hot) and the fan on low. Allow the engine to reach operating temperature. As the thermostat opens, the coolant level may drop. Continuously monitor the coolant level in the reservoir and top up as needed until it stabilizes. Some Transit models may have a dedicated bleeder screw on a hose or thermostat housing, which should be opened carefully until a steady stream of coolant emerges (no air). Ensure the reservoir cap is on loosely or removed during this process. A vacuum fill tool can also be used for a more efficient and thorough air removal.
• Final Check: Once the engine is cool, recheck the coolant level and top off if necessary.

Common Cooling System Issues for This Generation

Based on past Ford Transit generations and common fleet vehicle issues, potential cooling system concerns may include:

• Water Pump Leaks: The water pump is a wear item. Leaks or bearing noise can indicate a failing pump, leading to overheating if not addressed.
• Thermostat Malfunctions: A stuck-open thermostat can cause the engine to run too cool, impacting fuel efficiency. A stuck-closed thermostat can lead to rapid overheating.
• Radiator Leaks/Clogs: Radiators can develop leaks from corrosion or damage. Internal clogging from neglected coolant changes can restrict flow and cause overheating.
• Hose Leaks: Coolant hoses can degrade over time, leading to cracks, bulges, and leaks. Regularly inspect hoses for signs of wear.
• Degassed Bottle/Reservoir Issues: The plastic coolant reservoir can become brittle with age, leading to cracks and leaks. The cap mechanism can also fail.
• EGR Cooler Leaks (Diesel Models): On diesel engines, the exhaust gas recirculation (EGR) cooler can sometimes develop internal leaks, allowing coolant to enter the exhaust system or vice-versa. This can lead to coolant loss and other engine issues.

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