Buster got Oiled today, a truck tractor passed us while traveling into Amarillo and a thick trail of blue smoke was coming out the exhaust stack. Bonnie commented to me about the smoke and I responded that the color indicated that oil was probably coming from a leaking seal in the turbo bearing. Not long after passing Buster the truck slowed and exited the interstate, during the deceleration the blue smoke stopped, more indication of the seal leak. That is about the time I noticed these spots appearing on the windshield. I did not try to wash the windshield in motion but waited until the campground and that is when I realized Buster got Oiled. The oil black sooty type was all over the windshield and Buster creating a big wash job when we get Buster Setup at The Ranch in Lakewood, New Mexico.