How to Check Brake Fluid?
3 Answers
Brake fluid can be seen on the exterior of the reservoir, which has markings. If the brake fluid is low, the brake warning light on the dashboard will illuminate. Methods for selecting brake fluid: 1. High-temperature performance, which refers to the fluid's ability to resist vapor lock at high temperatures, is evaluated using the equilibrium reflux boiling point; 2. Low-temperature performance, which refers to the fluid's flow characteristics in cold conditions, is assessed by its kinematic viscosity at -40°C; 3. Since the seals in the braking system are made of rubber, prolonged exposure to brake fluid can cause chemical reactions, leading to swelling or shrinkage of the rubber seals and affecting braking performance. Therefore, it is important to choose brake fluid that is compatible with rubber.
My friends and I often work on cars together, and checking brake fluid is a basic task. Open the front hood and locate the plastic reservoir labeled 'Brake Fluid,' which is positioned on the side or center of the engine bay. The transparent reservoir has MIN and MAX level marks—the normal fluid level should be in the middle or slightly above. If it's low, it indicates a leak or worn brake pads, and you'll need to top it up with the same type of fluid, such as DOT4. Also, check the color: clear and transparent is best. If it turns dark brown or becomes cloudy, it means the fluid has absorbed too much moisture and degraded, which can lead to soft brakes or failure. Remember, replacing the fluid every two years is the safest practice—after all, safety is no small matter.
As a seasoned driver with years of experience, I've checked brake fluid hundreds of times. Just pop the hood, locate the reservoir, and ensure the level stays between MIN and MAX – that's the safe zone. But don't overlook small details: a leak in the brake system piping can cause fluid levels to drop. Color is even more critical – it should be pale yellow and clear when fresh. If it turns dark or murky, that indicates contamination, and you must replace it immediately. I also recommend checking if the reservoir cap seals properly to prevent dust ingress. A quick monthly visual inspection can save you from costly major repairs down the road, giving you greater peace of mind during daily driving.
