DOT 3 is a type of brake fluid commonly used in vehicles. It is a glycol-based fluid that absorbs moisture over time, which can lower its boiling point and affect braking performance. DOT 3 is suitable for most cars and light trucks, providing reliable braking under normal driving conditions. The fluid is rated for a minimum dry boiling point of 205°C (401°F) and a wet boiling point of 140°C (284°F). Regularly checking and replacing DOT 3 brake fluid is essential for maintaining safe braking performance and preventing brake system corrosion.