A coolant leak from the radiator can be caused by a defective thermostat bypass. This can cause pressure spikes in the cooling system, which leads to radiator failure. The thermostat assembly and radiator should be replaced.
Average mileage: 77,091 (6,275–300,550)
Engines affected: 5.4L V8, 6.0L V8 Diesel Turbo, 6.2L V8, 6.4L V8 Diesel Turbo, 6.7L V8 Diesel Turbo, 6.8L V10, 7.3L V8 Diesel Turbo
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