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Hi, I noticed at the end of my last track day that the brake reservoir fluid level was very low, but then the next day the level appeared normal with in the max//min markings after the car sat overnight. Is this normal?

  • 2016
  • Cayman GT4

The brake system was flushed 4 months ago and I have done 4 track days on it.  I have not noticed any degradation in braking performance or gotten any warning light.  Car/pads/fluid are stock.  No apparent leaks.  Fluid appearance looks ok (not dirty). Pads still look good.  The dealer said to monitor it, but I plan to take it in for a check/fluid flush before the next track day.  Since the system is sealed, I did not think fluid reservoir level would vary that much with temperature. When the brakes are hot from tracking, does fluid collect in the lines or master cylinder?  Thanks!

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