Champion DOT 4 Brake Fluid is recommended for most disk brake vehicles and is also a poly-glycol base. This DOT 4 brake fluid differs from DOT 3 due to the ability it has to chemically scavenge water, reducing the rate at which performance deteriorates when the fluid is exposed to humidity in service. Exceeds the specifications of Federal Motor Vehicle Safety Standard #116 and SAE J1704 for DOT 4 brake fluids.