STP Brake Fluid Heavy Duty is a glycol-based DOT 3 heavy-duty brake fluid that has been scientifically formulated to deliver dependable performance in disc, drum, and ABS brake systems used in modern cars and trucks. It’s engineered to ensure reliable brake function by resisting vapor lock and helping maintain system protection under a variety of driving conditions.

Key Features (from manufacturer)

• Designed for optimum performance in hydraulic brake systems requiring DOT 3 fluid (disc, drum, ABS).

• Helps protect against brake failure caused by vapor lock at high temperatures.

• Prevents corrosion within the brake system.

• Works with all brake systems that specify DOT 3 fluid.

• Meets or exceeds FMVSS No. 116 DOT 3 standards and SAE J1703 performance specifications.