Brake Fluid is Highly Hygroscopic

Important note: handle brake fluid with care. Fill brake fluid only into container from which the fluid cannot be consumed by mistake (fatal dose 100 cc). Even slight traces of mineral oil will lead to failure of brake system. When brake fluid is from colorless up to yellow, particular attention is required since in such a case the risk of making a mistake is the highest. If mineral oil is found in brake system or if the presence of mineral oil is suspected, thoroughly flush entire brake system with brake fluid. Also renew main cylinder. Do not permit brake fluid to come into contact with paint work of vehicle, since the fluid contains constituents, which act as solvents for the paint work. Brake fluid is highly hygroscopic, that is, fluid will take up moisture from the air, so that the boiling point will be reduced. For this reason, store brake fluid in well sealed storage containers only. Note. During its service life the boiling point of the brake fluid will go down as a result of constant absorption of moisture from the atmosphere. When the brakes are sharply applied, there is a possibility of vapor lock in brake system. For this reason, change the brake fluid once a year, if possible in spring. To facilitate inspections, attach a new sticker to brake unit following each change of brake fluid, indicating year and month of next change.