I got an 05 F250 4x4 6.0. well the turbo just went out and my warranty wont cover becuase it went over 77 miles. but 2 weeks prior to that at 99,863 miles, my truck was at the the dealership for EGR so it was replaced, but due to the EGR failing, my oil, water and radiator had mix together, and it looked like sludge sourdough like mud and colored grey. My question is, is there a connection to the turbo going out due to the mixture of the water and radiator mixing into oil therefore running thru the turbo and would of been just matter of driving and time that turbo would go out? several mechanics stated to me that one of the leading causes of turbo going out on 6.0 is oil getting to dirty becuase oil change is not done at the proper time. so would there be a connection?