My wife just bought a new 200 and her 04 Sebring convertible is now for sale. The 2.7 has been great, she has 153K on it but was very cognizant of the sludge problem and never missed the 3K oil changes. About 5K miles ago the oil pan started leaking, and I have not had the time to look at it, so it will be the next owners problem. We never changed the water pump or any other engine part except the oil sending unit and the timing belt only because it had cracks as they all do. The thermostat housing cracked and started leaking, then sealed itself up after 10K miles of leaking and gumming up...