Thanks for your response. I do a lot of highway driving in that confirms it and my sanity!AFAIK oil consumption has plagued the 3.6 since day 1. However I found that oil consumption depends heavily on driving style (at least for my car). If I drive around town or other short trips it uses very little oil. In contrast, if I drive freeways (sustained higher RPM) it uses considerably more. This oil is getting sucked through the PCV system, as confirmed with a catch can (tank has lots more oil after freeway than it does after non freeway). I have not found a way to solve the issue, so I just check the oil after every two fuel stops and top off as necessary.
And yes, the oil issue has been the subject of many threads!