Brake fluid is what’s known in the auto industry as hydraulic fluid. You may have heard the term ‘hydraulic’ but not know exactly what it means. Hydraulic is simply moved or powered by fluids. That’s exactly what brake fluid does; it moves components in your vehicle’s braking system. Brake fluid has to work under high pressures and temperatures. That’s why it’s so important to maintain your brake fluid, because as it ages it doesn’t work as effectively resulting in inefficient braking. It’s necessary to flush and replace your brake fluid according to manufactures guidelines, when your vehicle is serviced here at AE Services in Sutton the brake fluid will be checked and if needed changed. Brake fluid readily absorbs moisture and over time becomes too saturated with excess moisture, which causes it to degrade. Once moisture content reaches a certain level the brake fluid is no longer able to function properly in the brake hydraulic systems. For reliable, consistent brake system operation, brake fluid must maintain a constant viscosity under a wide range of temperatures, including extreme cold. This is especially important in systems with an anti locking braking system (ABS), traction control, and stability control (ESP), as these systems may use a valve with a time-based approach, rather than measuring pressure or volume to control the amount of fluid transferred. Brake fluid is subjected to very high temperatures, especially in the wheel cylinder of drum brakes and disk brake callipers. It must have a high boiling point to avoid vaporizing in the lines. A small drop in brake fluid level in the master cylinder reservoir can be ‘topped up’ but if the level is dropping too often, the cause should be investigated and repaired. Brake fluid level in the master cylinder will drop as the brake pads or shoes wear and the callipers or wheel cylinders extend further to compensate. If you are in any doubt as to the effectiveness of the brakes on your vehicle then call us now to book an appointment. For further information, go to www.autoexpressservices.com.