Castrol React SRF is the ultimate racing brake fluid. Its unique silicon ester technology absorbs less water than conventional fluids and prevents the high temperature performance from deteriorating. Its wet boiling point of 518 degrees F is vastly superior to the minimum DOT 4 requirement of 311 degrees F. Its ability to withstand temperatures up to 590 degrees F and resistance to the effects of absorbed water have established Castrol SRF as the world's premier brake fluid for all forms of motorsport and racing.
- Dry Boiling point minimum: 590 degrees F
- Wet boiling point minimum: 518 degrees F
- Silicon ester absorbs less water, extends change interval
- Compatible with all fluids meeting DOT 3, DOT 4, and DOT 5.1 standards
To maintain the functional reliability of brake systems, brake fluid must be changed according to the specifications of the vehicle manufacturer (quality and change interval). In race/track applications, it is critical that brake fluid be routinely changed, to maintain optimum performance.
Manufacturer # Castrol SRF  Product # ZECSRF