how to fix a leaking radiator on my Ford Mustang S550 (2015-2023)

Solution

1. Preparation

• Tools Required: Socket set, screwdrivers, radiator pressure tester, coolant catch pan, safety goggles, gloves.
• Park the vehicle on a level surface and allow the engine to cool completely.
• Disconnect the negative battery terminal to prevent electrical issues.

2. Drain the Coolant

• Place a coolant catch pan under the radiator.
• Locate the drain valve at the bottom of the radiator and open it to drain the coolant.
• If there is no drain valve, remove the lower radiator hose to drain the coolant.
• Dispose of the old coolant according to local regulations.

3. Remove the Radiator

• Disconnect the upper and lower radiator hoses using a hose clamp tool or screwdriver.
• Remove any mounting bolts securing the radiator to the support brackets.
• If equipped, disconnect any electrical connectors for the cooling fans.
• Carefully lift the radiator out of the engine bay.

4. Inspect and Repair

• Visually inspect the radiator for cracks, pinholes, or corrosion.
• If minor leaks are found, use a radiator sealant as a temporary fix following the product's instructions.
• For significant damage, proceed to replace the radiator.

5. Install New or Repaired Radiator

• If replacing, install the new radiator in the reverse order of removal.
• Ensure all mounting bolts are torqued to the manufacturer's specifications.
• Reconnect the upper and lower radiator hoses securely.

6. Refill the Cooling System

• Fill the radiator with the appropriate coolant type recommended for the Ford Mustang S550.
• Start the engine and let it idle, allowing the thermostat to open and circulate coolant.
• Check for leaks around the hoses and radiator.

7. Final Checks

• Monitor the temperature gauge and ensure it stays within normal limits.
• Recheck coolant levels after the engine cools down and top off if necessary.