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What coolant do you use for a ford 2003 6.0 diesel?

The 2003 Ford 6.0L Power Stroke diesel engine requires Ford Gold (or Motorcraft Gold) coolant, which is a low-silicate, extended-life coolant. Using the wrong type of coolant can severely damage this engine's crucial components, particularly the EGR cooler. Do not use anything other than Ford Gold or an equivalent that specifically meets Ford's specifications. Improper coolant can lead to corrosion and catastrophic failure.