Probably a 5.2 or 5.9L V8, right? They have problems with the intake manifold plenum gasket going bad, and the engine then burns a lot of oil.
My yard is full of Chrysler products, but only the Durango has that engine. 99,000 miles on it now, and that problem hasn't shown up. It's a fairly big job to pull the intake. There is a sheet metal cover on the bottom of the manifold, and that's where the problem is. But like was pointed out, it still needs new manifold-to-head gaskets, new valve cover gaskets, a new gasket for the T-stat, new coolant, and an oil change afterward.
And repairs for anything else that was damaged during the job.
Good on you for making him stand on his own.
Dan
Flying an airplane is just like riding a bicycle; it's just a lot harder to put cards in the spokes. - AIRPLANE! - 1980
Blinkin! Fix your boobs! You look like a bleedin' Picasso! - Robin Hood: Men in Tights, 1993
Never underestimate the power of stupid people in large groups. - November, 2008