Bought it used and did my first oil change about month and a half ago. I ride it daily pretty much, though not far. Put a whole quart of oil in when I did it last time, checked the oil this morning and see it's way past the full on the dipstick, pretty much halfway up the whole stick. I can see the oil when I peek in the dipstick hole. Is there any danger to this? I haven't noticed anything bad, occasionally I'll smell the exhaust for the first 2 seconds after starting it up but I don't think it's an oil burning smell and it seems to run fine anyway. Should I try to drain a little or just replace it?