Quote:
Originally Posted by KE_1508
The Torque RT700 actually was still clear/gold in color a year ago. Had 3 track days on them and when I flushed the system, it was as black as night.
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The black color in your brake fluid is primarily rubber from normal seal wear or an indication of aluminum oxide from master cylinder or caliper wear or corrosion. The better brake fluids will hold these impurities in suspension, rather than be allowed to cause additional abrasive wear, which means they are dark when removed. There is nothing in brake fluid itself that will turn black with time or heat, although it can get darker "yellow" with extreme temperature use.
Chris