Refrigeration oils
GS Series

Product Use

3GS, 4GS, 5GS
Recommended by most major equipment manufacturers and refined from especially selected naphtenic base oils. Highly stable, essentially wax free, thus providing excellent low temperature properties and assuring long trouble-free life. Suniso GS oils can be used in virtually any installation, regardless of compressor or evaporation temperature and are miscible with (H)CFC refrigerants and natural refrigerants.
Suniso GS oils can be applied in commercial as well as in residential refrigeration and air conditioning systems.


  • Suniso meets the performance requirements of leading OEMs for use in refrigeration system compressors where the manufacturer specifies a naphthenic mineral oil.
  • Chemical stability to extend service life, reducing maintenance costs.
  • Cleaner operation of the compressor with fewer deposits and failures due to valve sticking.
  • Excellent low temperature performance with no wax deposits to plug the system.
  • Approval by most major equipment manufacturers.

Suniso characteristics

Our factory in Hemiksem is equipped with its own laboratory to conduct in-house tests during the complete production process.

Typical analysis Suniso 3GS Typical analysis Suniso 4GS Typical analysis Suniso 5G
Density at 15°C 0.914 Density at 15°C 0.916 Density at 15°C 0.920
Viscosity at 40°C 30 cSt Viscosity at 40°C 55 cSt Viscosity at 40°C 100 cSt
Viscosity at 100°C 4.4 cSt Viscosity at 100°C 5.9 cSt Viscosity at 100°C 8.4 cSt
Flash point 168°C Flash point 179°C Flash point 182°C
Pour point -40 °C Pour point -36 °C Pour point -24 °C
Flock point -54°C Flock point -48°C Flock point -33°C
Aniline point 74°C Aniline point 77°C Aniline point 82°C
Colour 1.0 Colour 1.0 Colour L2.0

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