Champion DOT 5.1 Brake Fluid is a recent to the market, performance-oriented brake fluid now recommended by some OEMs in high horsepower applications This fluid is identical to DOT 5 silicone in both boiling point and viscosity; however, it is poly-glycol based like DOT 3 and DOT 4. DOT 5.1 has a dry boiling point of 530 degrees F, and has a higher wet boiling point than DOT 3 and DOT 4 fluids, with a viscosity of 900cSt at -40 F. Meets or exceeds FMVSS no. 571.116.