Synthetic brake fluid for extreme operating conditions. It contains inhibitors to prevent the corrosion of metallic brake components and to reduce oxidation at increased temperatures. The brake fluid has an outstanding wet and dry boiling point, thus ensuring safe braking even after the absorption of some moisture over an extended period of use. Special additives prevent the premature build-up of vapor bubbles. Exceptionally well-suited for use with all disk and drum brake systems, as well as vehicle clutch systems for which a synthetic brake fluid of this quality is prescribed. The brake fluid is also suited for use in ABS brake systems.