Meaning of the DOT code on Brake fluid

Code DOT 3, 4 and 5 on the brake fluid had the intent to explain the differences in boiling point or boiling point. While DOT stands for Department Of Transportation. For example, DOT 3, a minimum boiling point 205C and DOT 4, DOT 5 230 C. higher than the second, the raw material of silicon mixed with hard water.
Hence, the above brake fluid DOT 3 is more often used for high-speed vehicles and large capacity. However, the color in each package, it is not directly related to quality.

However, for two-wheeled vehicles standard DOT 3 will suffice. In addition to lower prices, while brake heat bearable. Except that often brought speeding, to ensure the security, please adopt DOT 4.
Deadline use brake fluid, all three are still the same. As a rule, replaced every 20,000 miles. But, do not just because he is old, if you have not already seen less time or color change, should be added or replace new.
Easy way to detect it. If the brake fluid is reduced, visible from the glass in the master brake.