"Which would make perfect sense considering the truck sat without being started for 7 years according to the previous owner. What I do find odd is that before the last 5k miles or so I never saw it smoke at all. Now it's smoking to the point it's kind of embarrasing to drive. "
My situation as well, pretty much, including a sooted up tailpipe and spark plugs that smell oily, and really low oil pressure. But it was running great. So it's torn down and in the machine shop right now. We found bad bearings, rings and worn cylinders. Yeah, pretty embarrassing blowing a cloud of smoke into the window of the Prius next to me.
