Apparently the TT250 ships with Shell Oil from the Zongshen factory:
http://californiascooterco.com/blog/?p=24091
I would also like to point out that its VERY easy to find neutral if you attempt while the bike has forward motion. It has something to do with the type of transmission that it uses. Ideally shift to N while your rolling up to a stop, but if your already stationary simply roll her forward an inch or two and it will be much easier.