RAVENOL ESF Extra Servo Fluid

RAVENOL ESF Extra Servo Fluid is a synthetic special hydraulic fluid. Due to its special formulation the properties of RAVENOL ESF Extra Servo Fluid are crucial. We assure an excellent cold stability.

Application Note

RAVENOL ESF Extra Servo Fluid is designed for use from -50°C to +110°C and is therefore recommended for the latest developments in the vehicle market.

RAVENOL ESF Extra Servo Fluid has an optimal performance behaviour as central hydraulic oil in power steering, rear axle steering, level control, hydro pneumatic suspension, shock absorbers, for active damping and engine protection, for hydrostatic drive of fan, alternator and air conditioning, for stability and traction systems (ABS/ASR/ASC), central locking, electro-hydraulic convertible top control, hydraulic brake booster and hydro pneumatic suspension for VW, Audi, Seat, Skoda. Especially to be used in cold countries.


  • Extremely low pour point
  • Improved viscosity and coefficient of friction behaviour
  • Very good wear protection
  • Excellent thermal stability
  • A good foaming behaviour
  • Neutral behaviour towards sealing materials
  • Reliable protection against corrosion

Technical Product Data

Density at 20 °C kg/m³ 825,0 EN ISO 12185
Colour grün VISUELL
Viscosity at 100 °C mm²/s 6,40 DIN 51562-1
Viscosity at 40 °C mm²/s 19,56 DIN 51562-1
Viscosity at -40 °C mm²/s 1100 ASTM D445
Viscosity Index VI 323 DIN ISO 2909
Brookfield Viscosity at -40 °C mPa*s 1080 ASTM D2983
Pourpoint °C -51 DIN ISO 3016
Flashpoint °C 172 DIN EN ISO 2592

All indicated data are approximate values and are subject to the commercial fluctuations.

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