Replacement Criteria for Sharan Brake Fluid?

[OliveRose]

Brake fluid does not have a fixed replacement standard; typically, the moisture content of the brake fluid serves as the basis for replacement. This is because moisture lowers the boiling point of the brake fluid, causing vapor to form in the lines during braking, ultimately leading to ineffective travel and making the brake pedal feel soft, thereby affecting braking performance. Most manufacturers recommend replacing the brake fluid every two years or 40,000 kilometers, although this standard is somewhat conservative. Below is additional information: Reasons for replacement every two years or 40,000 kilometers: Manufacturers recommend replacing brake fluid at intervals of two years or 40,000 kilometers as a general consideration, as they cannot precisely monitor the actual condition of the brake fluid in every vehicle sold. For instance, some vehicles are used frequently, subjected to heavy braking loads, or operate in humid environments, while others are used sparingly, experience light braking loads, or are in dry environments. Therefore, to strike a balanced approach, the recommendation of two years or 40,000 kilometers was established. If the vehicle is primarily used for commuting with little aggressive driving, there is no need to adhere strictly to the manufacturer's recommendation; simply refer to the moisture content. Brake fluid replacement criteria: When the moisture content of the brake fluid reaches 3.5%, it can be replaced. Of course, if the driving environment is merely congested urban traffic, delaying replacement slightly is acceptable. In congested urban conditions with low average speeds, frequent braking does not generate excessive heat, so replacement within a 4% moisture content is sufficient.

[VonGriffin]

I think the brake fluid replacement for the Sharan is quite particular. As a car owner with over a decade of driving experience, I always follow the manual's recommendation to change it every two years or 30,000 kilometers. Brake fluid absorbs moisture, and over time, its boiling point decreases. If you need to brake hard on the highway, bubbles can form, increasing the braking distance, which is very dangerous. Once, I delayed the replacement by half a year and felt the pedal was spongy, almost causing a rear-end collision. Now, I use a small test pen to check the moisture content myself—if it exceeds 3%, it's time for a change. Also, be cautious if the fluid color darkens or there's sediment. Regular maintenance saves money and hassle, and safety comes first. Don’t be lazy like I was when I was younger and risk an accident.

[DiEmily]

After years of repairing cars, the brake fluid standard for the Sharan is straightforward: replace it every two years as recommended by the manufacturer. We first check if the fluid level is normal, and if the fluid is cloudy or has excessive moisture, we replace it immediately. Brake fluid absorbs moisture, which lowers its boiling point and affects braking efficiency. Long-term neglect can lead to pump damage. The process isn't difficult—drain the old fluid, add new DOT4 fluid, and then bleed the system to ensure it's clean. From the many cars I've handled, I've noticed that delayed replacements often result in soft brakes or strange noises. A quick glance at the reservoir before daily driving can prevent issues.

[MaliaAnn]

Safe driving is my daily priority, and brake fluid replacement is not to be taken lightly. The Sharan manual recommends changing it every two years or 30,000 kilometers. The reason is that brake fluid absorbs moisture, which lowers its boiling point and may cause failure during emergency braking. I insist on checking the fluid clarity and moisture content myself every six months, and take action if it exceeds 3%. Delaying replacement not only makes the brake pedal feel softer but may also damage the pump. Timely maintenance ensures worry-free family trips. Don’t skimp on this small expense—safety is a top priority.