Valvoline Dot 3 & 4 Brake & Clutch Fluid - 5 LtrValvoline Brake Clutch Fluid DOT 3 4 is a high performance non-mineral brake fluid on basis of Glycol Ethers especially developed for hydraulic brake systems. The product is safe for all materials used in the brake system. Valvoline Brake Clutch Fluid DOT 3 4 has a high 260C. dry boiling point.Brake fluids are hygroscopic by absorbing condensation water the boiling point will slowly go down therefore it is recommended that the product is refreshed every 2 years. This brake fluid can be mixed with other brake fluids which are on basis of Glycol Ether or borate ester and have similar specifications. The product should not be mixed with silicone type or silicate type brake fluids.