Im a newer driver at a mega carrier and I'm switching to OO. They got me set up to buy (not lease) a 2016 DD15 Cascadia with 12 speed auto. The truck has 475k miles and a powertrain warranty for a year from purchase. The configuration is correct for the loads I haul and I'm currently in an identical company truck and like it. The price is reasonable to market so I'm pulling the trigger.
What should I check on the truck before I sign?