Castrol React SRF Racing 12X1L
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Castrol React SRF Racing
Applications Castrol React SRF Racing
Castrol React SRF Racing has an exceptionally high dry boiling point (320 °C) making it ideal for use in harsh conditions during racing or rally sports.
Product description of Castrol React SRF Racing
Castrol React SRF Racing is a high-performance brake fluid of special quality for use in competitive motorsports where extreme braking conditions occur. The product exceeds the US Federal Standards FMVSS 116 DOT 3 and DOT 4, ISO 4925, JIS K2233 and the current SAE J 1703 specifications.
Specifications, Approvals & Recommendations for Castrol React SRF Racing
| Castrol React SRF Racing Approvals / Performance Claims | Castrol React SRF Racing Specifications / Standards |
|---|---|
| FMVSS 116 DOT 3 | US Federal Standards FMVSS 116 DOT 3 |
| FMVSS 116 DOT 4 | US Federal Standards FMVSS 116 DOT 4 |
| ISO 4925 Class 4 | ISO 4925 |
| SAE J1703 | SAE J 1703 |
| JASO JIS K2233 Class 4 | JIS K2233 |
Operating Conditions
Due to the very specific properties of Castrol React SRF Racing, the service interval is limited to a maximum of 18 months. After this period, completely drain and replace the brake fluid.
Benefits, Features & Performance
Very high dry boiling point for extreme braking conditions
With an ERBP (Equilibrium Reflux Boiling Point) of 320 °C, the brake fluid is suitable for severe racing and rally conditions where high temperatures occur.
High temperature performance maintained during use
Castrol React SRF Racing has a very high "vapour lock" point (important for high temperature performance under real braking conditions), which is also maintained during service.
Synthetic brake fluid with very high performance capability
The brake fluid is synthetic and significantly exceeds the requirements of SAE J 1703, FMVSS 116 DOT 3 and DOT 4, ISO 4925 and JIS K2233.
Analytical Data & Typical Properties of Castrol React SRF Racing
| Property | Unit | Method | Value |
| Density at 20 °C, relative | g/ml | IP 160 | 1.066 |
| Appearance | - | Visual | Yellow, clear transparent |
| ERBP (Equilibrium Reflux Boiling Point) | °C | ASTM D1120 | 320 |
| Wet Equilibrium Reflux Boiling Point | °C | SAE J1703 | 270 |
| Water | % wt | ASTM D1123 | 0.15 |
| Viscosity at -40 °C | mm²/s | ASTM D445 | 1300 |
| Viscosity at 100 °C | mm²/s | ASTM D445 | 3.5 |
User Advice for Castrol React SRF Racing
Mixing Castrol React SRF Racing with conventional brake fluids is not recommended as it will reduce the advantages of Castrol React SRF Racing. Therefore, we recommend completely draining and flushing the existing brake system before refilling with Castrol React SRF Racing.
Storage
Preferably store under cover. If drums must be stored outdoors, they should be laid horizontally with the bungs below the liquid level to prevent water ingress and the loss of label markings. Products should not be stored above 60 °C, exposed to strong sunlight, or to freezing temperatures.
Shelf Life
Castrol React SRF Racing has a shelf life of 2 years.
Frequently Asked Questions (FAQ) about Castrol React SRF Racing
- 1. Can I mix Castrol React SRF Racing with a conventional DOT 3 or DOT 4 brake fluid?
No. Mixing with conventional brake fluids is not recommended because it will reduce the benefits of Castrol React SRF Racing. The advice is to completely drain and flush the brake system before refilling. - 2. How long can Castrol React SRF Racing remain in service in the brake system?
Due to its specific properties, the service interval is limited to a maximum of 18 months. After this period, the brake fluid must be completely drained and replaced. - 3. What is the (dry) boiling point of Castrol React SRF Racing and why is it important?
The dry boiling point (ERBP) is 320 °C. This high boiling point makes the brake fluid highly suitable for severe racing and rally conditions where brake temperatures can become extremely high.
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