I know that AFM engines uses a little bit of oil. On my 2008, it was always between 0.5 to 1qt after 5K to 6K miles. From what I have read, these people are using 2-3 quarts every 1K miles. I accept the fact that ALL vehicle engines will consume a little bit of oil between changes. There is no way that someone pours 6qts in and 6K miles later 6qts comes back out. When I checked the oil level before changing it was one one hole below the full mark. My question is, where does the oil go, either oil leaks out or it gets burned in the engine. If these AFM engines are using 2-3 quarts every 1K miles and not leaking, they must be smoking like crazy.