Hiya, Mine is also leaking, a slow leak. Oil.. If you´ve put too much oil in it, it can do that (which is also bad for the valve seals (?) in the engine; can put too much pressure on them which will cause them to wear alot quicker). The other reason mine is now leaking is because I´ve taken the engine cover off at one point and haven´t put it back on perfectly, so it´s leaking a little through the gasket. This isn´t a huge deal as it´s only a slow leak, a little more if I´ve been riding all day. I just keep the oil levels up.