I recently bought a used TMEC 200 Enduro year 2009 This is my first bike and so I don't know much about motorcycles that's why I decided to go here. For a picture of someone who bought a bike similar to mine go here: http://www.mychinamoto.com/forums/sh...duro-TMEC200-1 So when I got the bike my friend rode it back to my house, because I didn't know how to ride. Later that day he taught me to ride it in first gear so I rode it in my back yard for a couple of hours. During this time the exhaust put out a lot of white smoke which I didn't think to much of at the time. When I checked the oil for the first time using the dipper to my surprise there was no oil in it so I put in 15w-40 engine oil (not knowing at that time that there was specific motorcycle oil). After I took the MSF course and learned how to ride I started riding it around my neighborhood to get more practice before I ride on the actual streets. I started to take notice to the amount of excessive white smoke coming out of the exhaust that I don't see on other motorcycles. So I thought that maybe it needed an oil change so I did an oil change and added new oil which this time was 10W-40 motorcycle oil. And now it still has the white smoke and I also noticed oil coming out the end of the exhaust. The amount of oil I found at the end of the exhaust was about 1-2 drops, there was also oil on the side of my bike which appeared to be sprayed. So because of my lack of knowledge about motorcycles I decide to come here and see what you guys thought. Is the white smoke and oil coming from the exhaust bad? How can I fix it?

Here are the bike details:
I found this website which i think sells similar motorcycles to the one I have. http://www.atv4usa.com/proddetail.asp?prod=TMEC200-1 I think mine is 200cc it could be 125cc i'm not sure because when i ride it the fastest i've gone in 5th gear was 45mph and it felt like the engine was over reving because it was vibrating more than usual. Maybe the engine being so slow relates to the white smoke and oil problem? Also to find the owners manual which i think goes with my bike go to this link : http://www.atv4usa.com/partscatalog.html then click on the link on the very bottom just under the orange title "Owners Manual". Any help you can give me is greatly appreciated thanks.