ADDINOL Brakefluid DOT-4

Brake fluids consist mainly of polyglycol compounds and additives such as corrosion inhibitors. In rare cases, silicone fluids or mineral oils are also used in the manufacture of brake fluids.

The brake fluids are classified according to the American Department of Transportation (DOT). For classification purposes, the minimum requirements of a brake fluid for certain parameters are determined. The parameters include:

• the boiling temperature in °C (boiling point of a fresh, unused brake fluid),
• the wet boiling point in °C (boiling point of the mixture of a brake fluid and 3.5% water),
• the viscosity at 100 °C in mm²/s and
• the cold viscosity at -40 °C in mm²/s.