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THE ORIGINAL BRITISH MOTOR OIL SINCE 1899
AncillariesAncillary Fluids Range

Brake & Clutch Fluid DOT 4

A premium quality brake and clutch fluid suitable for use in all hydraulic brake and clutch systems requiring a non-petroleum-based fluid meeting DOT 4 specifications. Why choose this fluid

Specifications
  • FMVSS 116 DOT 4
  • ISO 4925 Class 4
  • SAE J1704
Available in

Why choose Brake & Clutch Fluid DOT 4

Duckhams Brake & Clutch Fluid DOT 4 is a premium quality brake and clutch fluid suitable for use in all hydraulic brake and clutch systems requiring a non-petroleum-based fluid meeting DOT 4 specifications. It is designed to withstand high temperature conditions and to provide maximum safety. Duckhams Brake & Clutch Fluid DOT 4 contains high boiling point synthetic base fluids blended with oxidation and corrosion inhibitors to resist oxidation at the high temperatures encountered in disc braking systems and to provide superior protection against corrosion of metallic components of the brake system. Brake fluids can be corrosive to paintwork; avoid spills. If a spillage occurs, rinse the product from bodywork with water as soon as possible; do not wipe or rub the spill. Not suitable for use in systems designed for mineral-based products (LHM). Should not be used where silicone-based DOT 5 or higher-specification DOT 5.1 fluids are required. Always refer to your handbook and follow the vehicle manufacturer's recommendations.

  • High boiling point reduces the impact of moisture absorption while in service, prevents vapour locking of brakes and maintains reliable braking performance.
  • Superior oxidative stability and pH retention ensure that the fluid will operate effectively at the high temperatures encountered in disc braking systems throughout the manufacturer's recommended brake fluid service life.
  • Superior high-temperature stability and low-temperature fluidity provide lubricity and ensure trouble-free operation.
  • Effective corrosion inhibitors provide long-term corrosion protection to the metallic components of the brake system.
  • Compatible with all seals and metals used in conventional braking systems requiring polyglycol brake fluids.

Typical physical characteristics

PropertyUnitTypical Value
AppearanceClear & Bright
Viscosity @ 100 °CcSt2.2
pH @ 25 °C8.16
Equilibrium Reflux Boiling Point°C263
Density @ 20 °Ckg/L1.043

Typical physical characteristics are provided as an indication of properties based on current production data only, and should not be interpreted as a specification.