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In contrast, the unique chemistry behind AMSOIL synthetic brake fluids increases boiling points well beyond DOT standards, even when contaminated with 3.7 percent water. This leads to a spongy or unresponsive feeling in the brake pedal (vapor lock). The extreme pressure and high heat common to brake systems can push brake fluid beyond its boiling point, causing it to vaporize or „boil-off.“ Water contamination can accelerate the process. A nitrogen blanket is added to each bottle during manufacturing to purge moisture and ensure the maximum level of performance. It lubricates and protects intricate brake components despite the inevitable water contamination. AMSOIL DOT 3 & 4 Synthetic Brake Fluid’s superior wet boiling points counteract these problems. It corrodes brake parts, lines and seals, leading to eventual failure. Once introduced to the system, water reduces boiling points and compromises performance. Brake fluid itself is hygroscopic (attracts moisture).
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Water contaminates the brake system by seeping through microscopic pores in flexible brake lines and seals and through the reservoir fill cap.
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