I have a 2003 with about 5k miles complete with leaky base gasket. Recall Suzuki switched from a paper to a metal gasket in approximately '03. The leak acts like a pinhole spitting tiny droplets of oil as the motor revs. A nice bead of high temp silicone has effectively taken care of the problem. I'm planning to take this bike through South America next year and have no plans to replace the leaking gasket.