Originally posted by goldenbear
The symptoms you describe seem to be more indicative of a head gasket leak, which is not uncommon for this vehicle.
Correct me if I'm wrong but I have to disagree. The head gasket keeps engine oil and coolant separate for these fluids to pass between the engine block and the cylinder head. No diesel fuel should be passing through the engine oil or coolant galleries. The diesel fuel in the oil problem described in the original post would mostly likely be coming from the injection pump area.....most likely where MREID indicated at the supply pump next to the injection pump.