SAE Viscosity Grade

VG 46


20L, 25L, 208L

Available Grades

VG 46

VG 22


Optimus Therm M2 Oils are mineral oil-type heat transfer oils for use in thermic systems with forced circulation.



  • Formulated with premium base oil technology
  • Noncorrosive, low odor level, excellent seal compatibility
  • Excellent thermal and oxidation stability


Optimus Therm M2 are recommended for use in thermic systems where fuel oil, gas, or electricity is used to heat a fluid, which then transfers the heat to the point of application. In closed, forced circulation systems equipped with expansion tanks,  Optimus Therm M2 Grade 22 can be used with bulk oil temperatures up to 316°C (600°F) and skin temperatures up to  343°C(650°F) where good thermal stability and pumpability are required. Optimus Therm M2 Grade 22 is also ideal where  high thermic rates combine with high flow rates, and for systems where repeated heating and cooling cycles are required. In  closed or open systems with forced circulation, Optimus Therm M2 Grade 46 can be used where bulk oil temperatures do not  exceed 288°C (550°F) and skin temperatures may be as high as 316°C (600°F). The oil surface in contact with air in open  systems should not exceed 107°C(225°F).Copper and copper alloys should not be used in heat transfer systems with a  hydrocarbon fluid unless air (oxygen) is excluded from contact with the fluid by hermetic sealing and/or an inerT gas blanket.