New job coming up lease purchase.

[dhirocz]

-Excessive oil leaks which could be a sign of blowby and crankcase pressure or a bad compressor...
-if the IMAP, delta-P and other emissions sensors are red, they haven't been replaced.
-see if the doser appears to have ever been replaced.
-other unpainted or repainted parts that stand out as a hint of recent work done...head, turbo, etc...
-is it noisy at idle?
-dpf/doc been off recently or been replaced?
-flywheel housing or rear main leaks.
-is the CEL on?
-low coolant level without an external leak or evidence of oil in the coolant, etc
...don't plan on good things if emissions parts are missing or if there are aftermarket parts installed!

I'm sure I'm missing tons considering I just shut down and I'm tired...other than that, pre trip it like your life depends on it.

I wouldn't even drive it home unless I pulled the IMAP to clean it. You can bet it's probably caked in soot if it's still mandated.