Tech Talk: Fluid for your Brakes

Today, we look at the brake fluid in your bike. What types there are and which one is best for you.
The four most common grades of brake fluid are DOT 3, DOT 4, DOT 5, and DOT 5.1. Each grade is manufactured to a specific performance standard. DOT 3, 4, and 5.1 are glycol-ether based, and DOT 5 is silicone based. In general, the higher the number, the boiling point of the fluid (more on this later). Fresh and clean brake fluid will have a higher boiling point than old and dirty fluid.