I burn about a 1/2 qt. every 4,000 between changes. I've been running Mobil 1 with a K&N filter from the 'get go' (installed at 500 mi.). Broke my car in like any race engine I've ever built.....not hard, but FAR from gentle. I do a Blackstone Oil Analysis w/TBN every other change. Perfect or BELOW normal wear factors.