What kind of oil should be used for brake fluid?
4 Answers
Brake fluid can be of castor oil alcohol type, synthetic type, or mineral oil type. The steps for replacing brake fluid are: 1. Park the vehicle on a flat surface, turn off the engine, open the hood, and drain the oil from the oil tank; 2. Use a funnel to fill the oil reservoir with new brake fluid; 3. Use a jack to lift the vehicle and start removing the tires from the rear wheels; 4. Remove the rubber dust cap on the brake caliper; 5. Use a wrench to loosen the drain screw and attach a rubber tube to it, connecting it to the drain bottle; 6. Press the brake pedal inside the vehicle while observing the draining process until the oil level in the engine compartment's oil reservoir reaches the lower limit; 7. Start the vehicle and perform a brake test in a relatively safe area.
I've driven many cars and know that brake fluid can't be added randomly. You need to use a specific type, like DOT 3 or DOT 4, depending on what your vehicle's manual recommends. Since brake fluid absorbs moisture, over time it can cause corrosion or softening of the brake system. If you add the wrong fluid, like mixing it with engine oil, the seals can get damaged, leading to complete brake failure, which is dangerous. I recommend changing the fluid every two years or so. First, check the fluid level and color in the reservoir—if it's clear, it's okay; if it's cloudy, it needs to be replaced. When doing this, work in a clean environment and pour slowly to avoid bubbles. This is a safety issue, so don't mess around with it yourself. It's best to have it handled by a professional shop to prevent accidents.
As an average car owner, I prioritize driving safety. Brake fluid must meet specified standards, such as DOT-classified fluids. Using incompatible liquids can cause complete brake failure, leading to critical accidents. Check your vehicle manual to determine the correct type—most cars use DOT 4. During every maintenance, I remind the mechanic to check the fluid level. If the fluid appears dirty or has an unusual odor, it's time for a replacement. Improper handling that introduces air bubbles can make the brakes feel spongy. Safety comes first—if you're unsure, seek professional help rather than taking risks to save money.
I enjoy DIY car maintenance, and choosing the right brake fluid is crucial. First, check the manual—it usually recommends DOT 3 or 4, and avoid mixing different brands to prevent incompatibility. When adding it yourself, pour slowly from a new bottle to keep the reservoir clean and free of contaminants. Regularly changing the fluid helps prevent system aging—I do it every two years to extend its lifespan.
