kropus

I have a 2003 legacy outback wagon with the 5 speed manual. I had my first oil change at 3000 miles. At 4200 miles I checked the oil and was down half a quart. At 5400 miles I'm down over a quart. My ex wife also has a 2003 legacy outback and her car isn't using a drop of oil. Has anyone else experienced this type of useage Thanks!