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Q: What is the water mixes with the oil? does it have an oil cooler. on 2007 Ford F-250 Super Duty

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Diesel pick up was running fine. Al of a sudden it stop running. I noticed the oil has water in it. What could be the cause.

(1) Answer
Are you sure this is oil that is in mixed with the water? It might be fuel; in which case it could be a cracked, head or block or a cracked injector cup, or both.