What's the reason for a significant decrease in brake fluid without any leakage?

[SanMaci]

The reason for a significant decrease in brake fluid without any leakage is due to high pressure in the new pump. Introduction to Brakes: Braking, also known as deceleration, refers to the action of stopping or reducing the speed of moving locomotives, vehicles, other means of transport, or machinery. The general principle of braking involves fixing a wheel or disc on the high-speed shaft of the machine and installing corresponding brake shoes, bands, or discs on the machine base to generate braking torque under external force. The braking device, also known as a decelerator, is a mechanical braking device that can slow down the speed. Classification of Brakes: Drum brakes, advantages of drum brakes, disadvantages of drum brakes, disc brakes, etc.

[VonCamila]

I've been driving for over thirty years and often encountered situations where the brake fluid inexplicably decreases. Actually, this is quite common, and the reason is mostly due to worn brake pads. When we press the brakes, the brake pads gradually wear thin, causing the pistons in the brake calipers to extend further, occupying more space, which naturally lowers the fluid level. Another possibility is air in the system, such as not fully bleeding the air after the last fluid change or small bubbles accumulating in the lines. I've also experienced slight evaporation of the fluid under a poorly sealed cap due to the car's jolting. If the decrease is significant, it's necessary to check the thickness of the brake pads; if they're too thin, replace them immediately—don't skimp on this expense. Safe driving is paramount; if braking effectiveness diminishes, it's easy to have an accident on the highway. Therefore, I recommend regular inspections at a repair shop, especially during seasonal changes.

[AmyLee]

Having worked in the automotive repair industry for many years, I've handled numerous similar cases. When brake fluid decreases without external leakage, the primary causes are usually excessive brake pad wear or residual air in the system. As brake pads wear thin, the calipers require more fluid to push the pistons, causing the fluid level to drop. Additionally, if there's an issue with the internal seals of the brake caliper, fluid might seep between internal components without spilling out. Another consideration is a loose brake fluid reservoir cap, allowing fluid to evaporate under high temperatures. I recommend using professional tools to inspect brake pads and fluid pressure, ensuring no air enters the system. Pay attention to changes in braking performance during daily driving, such as a softer pedal feel. Early repairs are far cheaper than fixing major accidents - never wait until something goes wrong before taking action.

[AidenLynn]

When I first bought my car, I also encountered the issue of brake fluid suddenly decreasing, which was quite puzzling. After checking some information, I learned that it's mainly caused by brake pad wear. As the pads thin out, the fluid level gets compressed and appears lower. It could also be due to insufficient fluid added during the last maintenance or residual air in the system. I need to remind myself to regularly check the fluid reservoir and brake pad thickness. If the fluid level drops too quickly, don't hesitate—go straight to a professional shop. After all, faulty brakes can easily lead to accidents on the road. Early maintenance saves money and ensures safety.