Castrol React SRF Racing brake fluid is a high performance brake fluid of special value in competitive motor sport where extreme braking conditions are encountered. It is an exclusive Castrol product registered under patents in many countries. Castrol React SRF Racing exceeds US Federal Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925, JIS K2233 and current SAE J 1703 specifications.

Castrol React SRF has been especially formulated to maximise braking performance under arduous competitive conditions. In order to achieve the optimum benefits in such applications, advanced materials have been employed in a unique and patented Castrol formulation. The use of Castrol React SRF should be restricted to not more than eighteen months before draining and refilling for maximum efficiency. Prolonged use in excess of the recommended period may give rise to a deterioration in performance at very low temperatures. Castrol SRF is suitable for all disc and drum brake systems with the exception of those for which mineral oil is prescribed.

Specifications:

• Castrol SRF
  • Exceeds US Federal Standards FMVSS 116 DOT 3
  • DOT 4, ISO 4925, JIS K2233
  • SAE J 1703 & SAE J 1704
  • SAE J1703
  • FMVSS 116 DOT 3 & 4

Benefits:

The exceptionally high dry boiling point, (higher than 300oC) makes Castrol React SRF ideal for use under arduous braking conditions such as racing or rallying.

Castrol React SRF 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. The compressibility of Castrol React SRF is very similar to that of current DOT 3 and DOT 4 fluids. It can, therefore, be filled into any non-mineral oil braking system. Castrol React SRF is miscible with all conventional fluids meeting US Federal Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925 and current J 1703. However, mixing Castrol SRF and conventional brake fluids will merely reduce the higher quality of Castrol SRF. It is, therefore, recommended that conventional brake fluids be drained from the system before flushing and refilling with Castrol React SRF.