Is Brake Fluid the Same as Hydraulic Brake Fluid?
2 Answers
Brake fluid and hydraulic brake fluid are the same; they are essentially the same product. Hydraulic brake fluid is the formal term, while brake fluid is the colloquial name. Hydraulic brake fluid is the liquid medium used in hydraulic braking systems to transmit braking pressure, employed in vehicles with hydraulic braking systems. Relevant information about hydraulic brake fluid is as follows: 1. There are three types of hydraulic brake fluid. When purchasing, choose a reliable manufacturer, and the higher the grade, the better. Its typical working pressure is 2MPa, with higher pressures reaching 4~5MPa. 2. All liquids have the characteristic of being incompressible. In a sealed container or a liquid-filled pipeline, when pressure is applied to the liquid, it is quickly and uniformly transmitted to all parts of the liquid.
Brake fluid and hydraulic brake fluid are actually the same thing. In my years working at an auto repair shop, I often encounter car owners asking about this. Both are liquids used to transmit braking pressure, with no essential difference. They are most afraid of water and high temperatures. Over time, they absorb moisture, causing the boiling point to drop and resulting in a spongy brake pedal feel. Generally, it's recommended to replace them every two years or after driving 40,000 kilometers—check your vehicle manual for specifics. When choosing, pay attention to grades like DOT3 and DOT4. Older cars can use DOT3, while newer cars or those frequently driven on mountain roads should opt for DOT4 for its higher boiling point and better safety. Always ensure thorough air bubble removal during fluid replacement, as it affects braking distance.
