Note

• Always use fresh brake fluid.
• In case of brake fluid spillage, rinse with a copious amount of water.

The brake fluid is hygroscopic, that is, it has a tendency to absorb humidity and water from the air.

The boiling point decreases as the water content increases, which means a considerable rise in brake fluid temperature can lead to formation of vapour bubbles and brake failure.

The colour of the brake fluid becomes darker over the course of time. At the same time, a dark-coloured liquid must not mean that the quality is bad. The change in colour is caused by chemical reactions and may occur within a short period (several weeks), particularly in vehicles equipped with ABS.

Even minute quantities coming into contact with a seal or sleeve will affect the component and could impair brake operation. The consequences of a contaminated brake system only become apparent months later, and then give rise to greater expenses, particularly in vehicles equipped with ABS.

1. - Sleeve (original size)
2. - Sleeve (swollen due to contact with mineral oil)

Summary of the above mentioned points:

• Always keep brake fluid containers properly sealed. This is the only way to ensure that oil, dirt, cleaning products and humidity do not enter.
• Brake fluid containers should be kept completely separate from oils (including hydraulic fluid) and cleaning agents to prevent any mixture of fluids or even filling of the brake system with an incorrect fluid.