Brake fluid is a necessity for the proper operation of your vehicle. This fluid keeps the hydraulic system in your vehicle functioning as it should by transferring force into pressure. There is more than one type of brake fluid, including DOT 3, 4, and 5.

DOT 3 and 4 are similar because they are both glycol-based fluids and absorb moisture from the atmosphere. DOT 5 is a silicon-based fluid that has high thermal stability and excellent lubricating properties. While DOT 3 and 4 liquids absorb water and moisture, DOT 5 liquids do not.

If you decide to change your brake fluid, make sure you don't spill the liquid because it can damage your vehicle's paint job. You should never mix brake fluids, even if they are the same type, such as silicon-based or glycol-based. Make sure you replace the lid on the bottle and buy new brake fluid when it needs to be replaced, even if you're only topping off existing fluid.

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