Motul RBF 600 Factory Line – DOT 4 Synthetic Racing Brake Fluid for Track and Motorsport

Motul RBF 600 Factory Line is a 100% synthetic, high-performance DOT 4 brake fluid developed for motorsport and extreme street use. With a very high dry boiling point of 312 °C / 594 °F and a wet boiling point of 205 °C / 401 °F, it ensures stable braking and consistent pedal feel even under repeated heavy braking. Its exceptional thermal stability and consistent viscosity make it ideal for multi-piston calipers, carbon-steel rotors and modern ABS/ESP systems.

Key Advantages

• Extreme thermal resistance: 312 °C (dry) and 205 °C (wet) boiling points eliminate vapor-lock and fade during extended braking sessions. [confirmed by Motul technical data]
• Stable in humid conditions: the high wet boiling point maintains braking efficiency after moisture absorption (approx. 3 % water after one year of use).
• DOT 4 certified / exceeds standards: outperforms DOT 3 and DOT 5.1 (non-silicone) requirements in all aspects except viscosity at −40 °C.
• Versatile use: suitable for all hydraulic brake and clutch systems – from performance road cars to full race builds.

Applications – Street, Track & JDM Performance

Designed for high-demand braking systems used in Honda (Civic Type R, Integra, S2000), Subaru (WRX STI, BRZ), Mitsubishi (Lancer Evolution) and Nissan (370Z, GT-R clutch hydraulics). Perfect for track days, time-attack, touge runs and performance-tuned street cars where fade resistance and consistent pedal feedback are critical.

Technical Specifications – Motul RBF 600 Factory Line

• Specification: FMVSS 116 DOT 4 / SAE J1703 / ISO 4925
• Dry boiling point: 312 °C / 594 °F
• Wet boiling point: 205 °C / 401 °F
• Kinematic viscosity @ 100 °C: 2.5 mm²/s
• Kinematic viscosity @ −40 °C: 1 750 mm²/s
• Color: amber
• Type: 100 % synthetic, non-silicone

Data source: Motul Technical Data Sheet & Safety Data Sheet (RBF 600 / RBF 660).

Comparison: Motul RBF 600 vs RBF 660

Usage & Compatibility Guidelines

• Service interval: Follow manufacturer recommendations; under track conditions change every 6–12 months (or more often if exposed to high humidity or temperatures).
• Do not mix with: silicone (DOT 5) or mineral (LHM) fluids. Mix only with similar polyglycol DOT 4 racing fluids of equal performance – for best results, flush system completely.
• Storage: Keep sealed in original container. DOT 3/4/5.1 fluids are hygroscopic – exposure to air reduces boiling point and can lead to fade.

FAQ – Common Questions about Motul RBF 600

Is Motul RBF 600 compatible with ABS and ESP systems?

Yes. RBF 600 is fully compatible with modern ABS and ESP systems. Its stable viscosity and low compressibility provide precise pedal feel and consistent response even during rapid modulation.

RBF 600 vs RBF 660 – which is better for track use?

For long stints and full race conditions, RBF 660 offers a higher dry boiling point (325 °C) and slightly better aerodynamic resistance. For track days and aggressive street driving, RBF 600 (312 °C) is more than enough if you flush it regularly.

How often should RBF 600 be changed?

Change every 6–12 months for track or performance driving. Moisture absorption over time lowers the wet boiling point and can cause fade under heavy braking.

Can RBF 600 be mixed with other fluids?

Avoid mixing with lower-grade DOT 4 fluids. Do not mix with DOT 5 (silicone) or LHM (mineral). Flush the entire system for maximum performance and longevity.