I just purchased a 18 grizzly 700 2 weeks ago and I'm 85 miles into the break in. The oil level was mid crosshatch last time I checked it (45 miles), as it was when I purchased it. Checked it today before riding behind the house and it's barely below crosshatch. I've basically been trail riding and not really abusing it at all, is this normal? Should I add oil or just go ahead and do the 100 mile change now and keep a eye on the level?