ok here it is when i bought myine back in may i put around 3000 miles on it and had turbo replaced now im leaking oil on the back side(motor side) of it also my mpg has dropped 2mpg and just doesnt seem to be running right. I changed the oil the other day and checked it the next and it was already as black as coal. didnt even have 150 mile on it. not getting water in oil but was over full when i changed it i have done nothing to this truck besides a lift everything is stock. What could this be????