On higher-mileage vehicles, engine oil leaks from the valve covers and front crankshaft seal are common.Google+
Car Problem Reports
Chrysler Concorde Oil Leaks at Valve Covers/Front Crankshaft Seals are Common on High Mileage Vehicles
Chrysler Concorde Problem
Engines Affected: 2.7L V6, 3.3L V6, 3.5L V6
Average Mileage: 100,357 mi (7,500 mi - 216,000 mi)
Front crankshaft leak.
Haven't got it fixed, but engine is leaking oil.
Visitor, 2004 Chrysler Concorde, 3.5L V6, 110,000 mi
valve oil leak.
Visitor, 2002 Chrysler Concorde, 2.7L V6, 75,000 mi
Visitor, 1996 Chrysler Concorde, 3.3L V6, 50,000 mi
the car developed a valve cover leak at about 50,000 miles. I replaced the gaskets and at 82,000 miles that's the only leak the engine has ever had