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What type of coolant do you use on a ford 7.3 diesel?

Ford recommends using a high-quality, heavy-duty diesel engine coolant that meets Ford's specifications (or equivalent). This is usually a 50/50 mix of coolant and distilled water. Don't just use any antifreeze; using the wrong type can cause serious damage to your engine.

While the exact specification number might vary slightly depending on the year of your 7.3L Power Stroke, looking for a coolant that meets Ford specification ESE-M97B44-A or an equivalent such as Gold Propylene Glycol-based coolant will usually be appropriate. Always check your owner's manual for the most accurate and up-to-date recommendation for your specific vehicle. The manual will usually specify the correct type and mixture ratio.