I have had the upper coolant housing leak. The belts and spark plugs have been changed once. The alternator had to be rebuilt a 245000.
Other than that this has been the best vehicle I have ever owned.
The spark plugs have only be changed once as the belts.
This vehicle I drive every day. I change the oil every 4000 to 5000 miles and use only Valvoline 10w40. I know there has been a lot of people having problem with the 2.7 engine which I think is using poor quality oils if sludging is the problem.
You're a lucky duckling with the 2.7liter not failing.