What is the composition of brake fluid?
2 Answers
Most brake fluids are made from castor oil and low-carbon alcohols. Brake fluid is an important fluid in a car's braking system, serving the function of transmitting resistance. Below is relevant information about brake fluid: Function of brake fluid: Brake fluid, also known as brake hydraulic fluid or mineral oil brake fluid, possesses properties such as oxidation stability, anti-foaming, resistance to rubber swelling, and rust prevention. Its replacement cycle is related to the braking process during driving and the vehicle's braking system. Brake fluid has water-absorbing characteristics, and if not replaced for a long time, the safety factor of driving will decrease. Brake fluid replacement cycle: For vehicles used more frequently, brake fluid can be replaced at around 30,000 kilometers. If used less frequently, the replacement cycle can be extended accordingly, generally to around 50,000 to 60,000 kilometers.
As a seasoned driver with over 20 years of experience, I've witnessed numerous brake fluid issues. Brake fluid primarily consists of chemical compounds like glycol ether or silicone, with significant differences between types. Common DOT3 and DOT4, for instance, are glycol-ether based and can absorb moisture from the air. Over time, their boiling points decrease, potentially causing failure during emergency braking - a serious safety concern. I once had a close call on the highway due to overdue fluid change in my previous car, and since then I've made it a rule to change it every two years at authorized shops. Always choose fluid matching your vehicle's manual - don't cut corners here. Also maintain system seals to prevent leaks or water ingress. Understanding these components helps prevent accidents, which is far more cost-effective than post-failure repairs.
