While brake fluid function is relatively easy to understand, there is a wide variety of types to choose from, which may be confusing when it is time to replace the brake, or hydraulic fluid. The two chief types of brake fluid are glycol-based, which can be further divided by grade, and silicon-based fluids. Glycol-based brake fluids are typically used in vehicles with anti-lock brake systems (ABS) while silicone-based ones work only in cars and trucks without ABS technology. If a vehicle without anti-lock brakes has ever had a glycol-based brake fluid, you cannot switch to a silicone-based one because small amounts of glycol will remain behind and chemically compromise the integrity of the silicone. Glycol-based fluids are classified by a Department of Transportation (DOT) number up to 5.1, which indicates the boiling point of the fluid. Higher DOT numbers indicate better quality of hydraulic fluid that can withstand higher temperatures. To know what type of brake fluid is best for your vehicle, consult your owner’s manual or give one of our mechanics a call.
Jan., 28th, 2018