My new moped is leaking oil all of the sudden. I never saw any leaks before I bought it, and I even test drove it quite a bit. I have ridden it about 5 miles since I got it, and yesterday after I started it up and left it run for a few minutes, I shut it off. I noticed a small amount of oil on the ground below it, and when I looked underneath, it was dripping out. It's dripping out where the exhaust meets up, but the exhaust was sealed with permatex before I bought it. The leak is on the bottom, where the bottom end meets up with the (transmission I'm guessing.) It only leaks while it's running, and it's not a whole lot, but I'm concerned. Could it be a failed gasket or something along those lines?? It still runs really great, but requires a bit of choking before it will start up, and once it is warm, it has no problems. Can anyone help?? FYI...it's a 1987 Trac Olympic. Thanks all.