The brake fluid is based on polyethylene glycol ether technology for high performance. It is made by mixing alcohol and glycerin. What is DOT 3 Fluid?ĭOT 3 brake fluids are petroleum/non-mineral based, non-silicone, and fully synthetic brake fluids designed for use in a wide range of clutch and brake applications. It is mainly caused by heavy and prolonged brake use, which has an adverse effect on the performance of the whole brake system. Boiling points refer to where the brake fluid will begin to boil or vaporize in the brake system. The main thing that separates the various classes of DOT brake fluids is their boiling points or temperatures. The DOT brake fluid types include DOT 5.1, DOT 5, DOT 4, DOT 3, and DOT 2 brake fluid. There are different types of DOT brake fluids. They also give specifications on the minimum boiling temperatures to which the manufacturers of the fluid should adhere. The standards focus on maintaining the performance of brake fluids in both low and high temperatures. DOT gets its name from the Department of Transportation. A Lubricant: Lubricants such as polypropylene or polythene keeps the parts moving freely from 20% to 40%.ĭOT brake fluid meets stringent specifications and standards set by the Department of Transportation and the Society of Automotive Engineers. The commonly used solvent diluent is a glycol ether. It accounts for 50% to 80% of the brake fluid. A Solvent Diluent: It determines the viscosity and boiling point of the brake fluid.A Modifier Coupler: This changes the number or intensity of swelling on the exposed rubber parts.Inhibitors: They prevent oxidation and corrosion.
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