Just finished my experiment of how much oil would be consumed over 8000 miles of riding. I bought my oil and marked with a marker where the oil level was on each of the 4 bottles. I saved these bottles and now have 8127 miles on this oil. I drained the oil today and then poured the oil back into the same marked bottles. 3 bottles back to the marked line that I put on the bottle when bought new. The fourth bottle came up a little low of the marked line. It took 7 1/2 fl. oz. to get it up to the marked line. This being said I have always used Mobile 1 10W-40T racing oil from the first oil change at 1000 miles. The bike is an 2007 with 127684 miles on it now.