07/06/2026
đź”§ Workshop Tip: Black Brake Fluid Explained
If your brake fluid is coming out grey or black during a bleed, it’s usually caused by worn internal seals. DOT fluid, heat, and constant use gradually break down rubber O-rings and piston seals, contaminating the fluid with microscopic debris.
DOT fluid also absorbs moisture over time, leading to oxidation and further fluid degradation.
⚠️ Black fluid is often a sign that a simple bleed may not be enough—inspect seals and pistons, especially on older or heavily used brakes.
Regular fluid changes help keep your brakes performing at their best.
đź”— Shop brake upgrades: https://uberbikecomponents.com/pages/braking