Halo P1 by Orthene Specialist Racing Brake Fluid - Technical Specs & Applications

Halo P1 by Orthene Specialist Racing Brake Fluid is engineered for maximum thermal resistance and braking consistency under the extreme demands of motorsport. With one of the highest dry boiling points in the industry, P1 offers exceptional performance for sprint formats, track days, and competitive events where peak braking power matters most.

Technical Specifications

• Dry Boiling Point: 341°C (646°F)
• Wet Boiling Point: 206°C (403°F)
• Viscosity @ –40°C: ~1400 mm²/s
• DOT Classification: DOT 4 Racing
• Chemical Base: Glycol-ether/borate ester with advanced corrosion inhibitors

Advantages of Halo P1

• Exceptional Dry Boiling Performance: Ideal for short, high-intensity racing formats where brakes are pushed to maximum temperatures.
• Consistent Pedal Feel: Low compressibility ensures predictable braking lap after lap.
• Corrosion Resistance: Protects internal brake system components from degradation.
• Compatibility: Mixes with DOT 3, DOT 4, and DOT 5.1 (not silicone-based DOT 5).

Best Applications

• Track days and time attack events
• Sprint racing formats
• High-performance street cars with frequent brake servicing

Compare with Castrol SRF

If you’re considering Castrol SRF Racing Brake Fluid but want higher dry boiling performance at a more accessible price, read our SRF vs P1 comparison to see which fits your needs best.

Related Resources

• Racing Brake Fluid Buyer’s Guide
• Track Day Brake Fluid Guide
• Endurance Racing Brake Fluid Guide