Sorry i cought your post so late.
But i to, have the 2.4L with about 45,000 on it.
I believe my oils been changed twice since i've had my jeep, and its way over due, and i got mine with 18.000 miles on it.
I've only had to put 1qt in it since last yr, and plan to do a hole oil change some time this yr, i guess when i get around to it.