Most sports bikes are limited to 300km/h by the manufacturers in an effort to be responsible.
Actually the ? was about the 1000 not "most sport bikes". The Suzuki gsxr1000 for 2007 is rev limited to 184 mph. U do the math to figure out kph but in the U.S. who cares about the metric numbers.
The "bottle" is probably the overflow tank for the radiator/coolant. Any oil in that is, unfortunately, terminal.
Or , lack of service of a cooling system produces "gunk" and looks odd. Cooling systems need periodic servicing, yearly or more is a good yard stick, depending on mileage.
Does the bike overheat or misfire?