Travis, let me know what you find out if you decide to try some of the less expensive methods. My little girl goes through 3/4 of a quart of oil between fill-ups (about 330-350 miles). YES that's excessive, but that's what she's always done. It would be nice to cure her thirst (at least a little).
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong, it usually turns out to be impossible to get at or repair."
-Douglas Adams, Mostly Harmless