Ive read many forums from this website but just recently signed up due to an ongoing problem with my 2005 6.0 that I cant seem to get any information on. For the past year or so my truck has been getting fuel in the oil to the point where it dilutes the oil so bad that it cannot build enough pressure to start. I pulled all the injectors recently and found no damaged o rings, proceeded to re seal all of them and make sure all of the injectors are at proper torque. Still had the problem. I assumed the only thing that could be left to check were the cylinder heads so I went ahead and bought a new set of o-ringed heads, studs and a few other parts. Pulled the cab, check the pistons, no cracks and no scoring in the cylinders so all seemed well internally. Drove the truck for about 700 miles the following week, ran great, had good power but then started having the same issues of dilution. Im at a loss any input would be appreciated.