What is Brake Fluid Composed Of?

[OscarLee]

Brake fluid is composed of the following components: 1. Component One: Polyethylene glycol is highly viscous, so polyethylene glycol ether is used to dilute it. Polyethylene glycol ether ensures that the solvent functions properly in the fluid. 2. Component Two: The base fluid typically refers to polyethylene glycol, which acts as a lubricant and accounts for about one-third of the brake fluid. These base fluids are produced through complex chemical reactions involving alkylene oxides (ethylene and propylene) with glycol or water. 3. Component Three: A small amount of additives is required. For example, corrosion inhibitors and antioxidants can effectively protect the braking system from corrosion, slow down the oxidative decomposition of materials, and prevent the formation of acidic decomposition products and resins. Although these additives are added in small quantities, they are crucial as they significantly extend the lifespan of the brake fluid.