Looking at a few 6.4's

[quicksilver11]

Local dealer has 3 king ranch 6.4s for sale. Fairly decent price. Between 70-107k miles on them. What should I be looking for when I go take a look at them? I know squat about the 6.4s other than delete them as soon as you get one.

 

[sootie]

check the degas bottle for dried coolant, take the oil fill cap off when the engine is idling and check the crankcase pressure, smell the oil on the dipstick to check for fuel dilution,

lay underneath and look for leaking trans cooler lines, check the build date on the drivers door sticker. anything built in Jan 08 and later is a job 3 which is best (less HG issues and trans issues)

check the exhaust flange where the downpipe meets the cat pipe to see if it has recently been off (that is indication of being previously tuned)