United Glycol Brake Fluid DOT 4 is engineered for all disc and drum type brake systems, which call for DOT 4 or DOT 3 performance. It is formulated as high quality glycol and glycol ether fluid. United Glycol Brake Fluid DOT 4 is formulated to give extreme temperature performance, which grreatly reduces the tendency to vaporize at elevated temperatures, which are common in modern braking systems. This increased boiling resistance and provides an extra margin of safety over conventional brake fluids.United Glycol Brake DOT 4 is a highly stable product and maintains its superior protective qualities over long service and extreme conditions. This fluid functions consistently, whether the vehicle is operating in bitter, artic cold or extreme desert heat. In addition, this product exhibits excellent lubricity and corrosion control and is safe to all materials used in vehicle braking systems.- Safe to mis with conventional brake fluids- All season protection- High and low viscosity control- Compatible with rubber components