jarrunesteissä

Jarruneste, also known as brake fluid, is a hydraulic fluid used in most hydraulic brake systems. Its primary function is to transmit pressure from the brake pedal to the braking mechanisms, allowing the vehicle to slow down or stop. Jarruneste is designed to be incompressible, meaning it does not significantly change its volume under pressure, which is crucial for effective braking.

There are several types of jarruneste, commonly categorized by their DOT (Department of Transportation) rating, such as DOT 3, DOT 4, and DOT 5. These classifications indicate specific performance characteristics, including boiling points. Higher boiling points are desirable because braking generates heat, and if the jarruneste boils, it can lead to brake fade, a dangerous loss of braking power.

Jarruneste also contains additives to prevent corrosion of brake system components and to lubricate moving parts. It is hygroscopic, meaning it absorbs moisture from the atmosphere. This absorbed water can lower the boiling point of the fluid and lead to corrosion over time. Therefore, it is important to regularly check and replace jarruneste according to the vehicle manufacturer's recommendations. Using the correct type of jarruneste is essential for the safety and proper functioning of the braking system.