Doubt the end is near. You need to find out what the CEL is about. I drive a MY'01 with 214,000 miles on the clock. And it's still running. The highest I have taken oil changes to is about 5000 miles. Never any issues with sludge, etc....The 2.5L is not a sludge prone engine. But then it really depends on the type of driving one does. If you average at least 10 miles per trip, sludge would not be an issue. However you drive between 2-5 miles per trip or even 1-3 miles per trip, then a higher chance for sludge, as the engine oil just does not get hot enough to boil out water.