You can't run a hot engine on old oil. High-performance 250s shear oil molecules much faster than standard commuters. To keep your machine "hot" but healthy, you should:
The color of your plug tip tells the story of your engine's internal temperature. www xxx 250 hot
For air-cooled models, adding an external oil cooler is the single best way to ensure your oil doesn't break down under high-stress "hot" conditions. 3. Tuning for Speed: The Electronic Edge You can't run a hot engine on old oil