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.
Castrol React SRF Racing 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 meets US Federal Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925 Class 4, JASO JIS K2233 Class 4 and current SAE J1703 specifications.
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 vapor lock point (the more important measure of high temperature performance under actual braking conditions), and has the additional advantage of sustaining high vapor 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 vapor lock performance.
Typical Product Characteristics
| Density @ 20C, Relative |
IP 160
|
g/ml |
1.066 |
| Appearance |
Visual |
- |
Yellow, Clear & Bright |
| ERBP (Equilibrium Reflux Boiling Point) |
ASTM D1120 |
°C |
320 |
| Wet Equilibrium Reflux Boiling Point |
SAE J1703 |
°C |
270 |
| Water |
ASTM D1123 |
% wt |
0.15 |
| Viscosity at -40 °C |
ASTM D445 |
mm²/s |
1300 |
| Viscosity at 100°C |
ASTM D445 |
mm²/s |
3.5 |
Product Performance Claims
- FMVSS 116 DOT 3
- FMVSS 116 DOT 4
- ISO 4925 Class 4
- SAE J1703
- JASO JIS K2233 Class 4
Storage
All packages should be stored under cover. Where outside storage is unavoidable drums should be laid horizontally to avoid the possible ingress of water and damage to drum markings. Products should not be stored above 60°C, exposed to hot sun or freezing conditions.
