Hello, I just picked up a 2015 f250 with 88,000 miles on it. Got home from 300 miles away and found a big oil leak. Dripping on the road where I parked for about 30 minutes. Found the whole underside covered in oil. The valley seems dry, but passenger side block and seems head covered in oil. Front of engine has lots of oil suspension underneath and oil pan cross member all oil covered. I also got a p04db something about the crank case vent I believe.