Have you run it really hard up hills? In traffic? Until you can be completely sure its not going to overheat I wouldn't push it too hard.

__________________
TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth