Oil in Fuel

[Dustink1984]

Hello All,

Need some assistant I have 2004 International 9400i with a CM870 Cummins ISX motor. Vehicle had an engine oil leak at rear of head gasket. Removed Cylinder head, had head sent out to machine shop and had head inspect etc. Machine shop replaced Cam Bearings and did all normal pressure checks, cleaning etc. Got everything reinstalled, overhead set has been adjusted per spec. We are having an issue with the vehicle runs for aprox 30-35 minutes its getting small amounts of oil contamination in system, noticeably in the DAVCO. Have read all about the algae etc building up tanks. We actually have the engine running off a bucket of fuel directly from davco and same issue runs for about 30-35 minutes and produces oil. All the injector seals minus the oil seals in top of the injectors have been replaced, anyone have any insite on this. Vehicle does not smoke or misfire at all. Appreciate any help give :)