My only real-world experience with this was with my recently-owned BMW R1200R. When the oil was cold it would cover about 60% of the sight glass. When it was up to temp it would rise all the way to the top. Of course that bike held more oil volume. Haven't experimented with this on the V-Strom.I just did a quick Google check and it looks like the difference in Volume between 15°c and 100°c is about 6.5%, at least for Fuel oil which I suspect is similar...