Is there any visible sign of oil in your intake? Like where the passenger side valve cover vents into the air cleaner? If you don't see any there, how about on the driver's side tube to the AAV - is there any sign of heavy oil flow? Sounds like one, or both of your "Spark Arresters" in the valve covers are plugged up, allowing positive crankcase pressure to blow oil through your rings. Either that, or you just developed a major issue all of a sudden, like a stuck ring, broken valve guide, or worse. 1 quart in 250 miles is a LOT unless you're talking old Ford or Detroit Diesel!
