Castrol SRF is the ultimate racing brake fluid. Its unique silicon ester technology absorbs less water than conventional glycol ether fluids and prevents the fluid's high-temperature performance from deteriorating. It's high boiling point, ability to withstand extreme temperatures and superior resistance to the effects of absorbed water have established Castrol SRF Brake Fluid as the world's premier fluid for the hydraulic brakes used in all forms of motorsport and racing.
Application
Castrol React SRF Racing has an exceptionally high dry boiling point, typically 325°C, making it ideal for
use under arduous braking conditions such as racing or rallying.
Castrol React SRF Racing has a very high vapour lock point (the more important measure of high temperature
performance under actual braking conditions), and has the additional advantage of sustaining high vapour lock point
characteristics during its service life.
In order to achieve the optimum benefits in such applications, advanced materials have been employed in a unique and
patented Castrol formulation. The properties of this formulation are such that in order to derive maximum benefit the use
of Castrol React SRF Racing should be restricted to not more than eighteen months before draining and refilling.
Advantages
Castrol React SRF Racing is suitable for all disc and drum brake systems with the exception of those for which mineral
oil is prescribed. It is miscible with all conventional fluids meeting US Federal Standards FMVSS 116 DOT 3 and DOT 4,
ISO 4925 and current SAE J1703. However, mixing with conventional brake fluids will merely reduce the higher quality of
Castrol React SRF Racing and therefore recommended that conventional brake fluids be drained from the system
before flushing and re refilling.
It is recommended that this fluid is changed every 18 months to maintain it's exceptionally high vapour lock performance.