This sample is Mobil 1 10W40 HM, run for 6077 miles/about 9 weeks. I've been using this oil at 6k mile change intervals for the past 80k. For the longest time I had to add 1/2 quart every 2500 miles or so, but lately consumption has dropped to almost zero. I'm not really sure why, but maybe my increased highway driving these days has something to do with it? The fuel found in the sample might be due to conditions right before I drained the oil: ambient temps lower 50s, drove car 8 miles, parked for 5-10 mins, had to move car - started/ran engine for less than 1 minute, drained oil.