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Priolube™ 3970

Priolube 3970 demonstrates excellent oxidation stability and high flash point properties. It is suitable for use in a wide range of applications, both as a base fluid and an additive.
Priolube™ 3970
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Product details


  • Priolube


  • Driveline & transmission
  • Engine oils - Passenger car
  • Engine oils - Heavy duty
  • Engine oils - Motorcycle
  • Engine oils - Marine
  • Greases
  • Hydraulic fluids - Fire resistant
  • Metalworking and forming - Rolling oils
  • Fuel additives - Marine fuel additives
  • Industrial gear oils


  • Esters - Polyol ester, saturated

Feature and benefits

  • Biodegradable
  • Clean burn
  • Good lubricity
  • High flash point
  • High thermal and oxidative stability
  • High viscosity index
  • Low volatility
  • NSF HX-1 registered product
  • OSPAR Compliance

Physical form

  • Liquid


  • Passenger cars
  • Heavy duty vehicles - Off road
  • Heavy duty vehicles - On road
  • Marine
  • Small engines
  • Industrial processes
  • Oilfield


  • Base oils
  • Lubricity additives

Global Inventory Compliance

  • European Ecolabel (LuSC list)
  • OSPAR compliant
  • USDA Biopreferred®
  • VGP compliant


Property Units Value
Acid value mg KOH g⁻¹ Login
Biodegradability OECD 301B % Login
Cloud point °C Login
Colour Login
Density at 20°C g cm⁻³ 0.94
Dynamic viscosity at 25°C mPa s Login
Fire point °C Login
Flash point °C Login
Hydroxyl value mg KOH g⁻¹ Login
Iodine value gl 100 g⁻¹ Login
Kinematic viscosity at 100°C mm² s⁻¹ 4.4
Kinematic viscosity at 40°C mm² s⁻¹ 20
Kinematic viscosity at -40°C mm² s⁻¹ 4000
Pour point °C Login
Saponification value mg KOH g⁻¹ Login
Viscosity index Login
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