Oil in fuel system due to injector seal leaks on Ford F-250

Fuel injector seals can start to leak and allow oil into the fuel system. Symptoms of this might be rough engine idle or hard starting. Fuel that appears gray or black in the filter bowl when changing the fuel filter is another sign.
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Average mileage: (–)
Engine affected: 7.3L V8 Diesel Turbo
5 model years affected: 1993, 1994, 1995, 1996, more1997
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