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Omala S 2 G

Industrial Gear Oils

Shell Omala S2 G oils are high quality extreme-pressure oils designed primarily for the lubrication of heavy duty industrial gears. Their high load carrying capacity and anti-friction characteristics combine to offer superior performance in gears.

Performance Benefits

Long oil life – Maintenance saving

Shell Omala S2 G oils are formulated to resist thermal and chemical breakdown throughout the maintenance interval. They withstand high thermal loading and resist the formation of sludge to provide extended oil life capability, even with bulk oil temperatures of up to 100°C in certain applications.

Excellent wear & corrosion protection

Excellent load carrying capacity reduces gear tooth and bearing wear on both steel and bronze components.

Shell Omala S2 G has excellent corrosion protection, protecting both steel and bronze components, even in the presence of contamination by water and solids.

Maintaining system efficiency

Shell Omala S2 G oils have excellent water separation properties, such that excess water can be drained easily from lubrication systems to help extend the life of the gears and ensure efficient lubrication of the contact areas.

Water can greatly accelerate surface fatigue of gears and bearings as well as promoting ferrous corrosion on internal surfaces. Water contamination should therefore be avoided or removed as quickly as possible after the occurrence.


Enclosed industrial gear systems

Shell Omala S2 G oils are formulated using an effective sulphur-phosphorus additive system to provide an extreme pressure performance which allow trouble-free application in most enclosed industrial gearboxes using steel spur and helical gears.

Highly loaded gears

Shell Omala S2 G oils have an effective full extreme pressure (EP) additive system allowing them to be used in highly-loaded gear systems.

Other applications

Shell Omala S2 G oils are suitable for lubrication of bearings and other components in circulating and splash-lubricated systems.

For highly-loaded worm drives the Shell Omala “W” series oils are recommended.

For automotive hypoid gears, the appropriate Shell Spirax Oil should be used.

Specifications and Approvals

  • Meets ISO 12925-1 Type CKD, except ISO 680-1000
  • Meets DIN 51517- Part 3 (CLP), except ISO 680-1000
  • Meets AGMA 9005- EO2 (EP)
  • Meets US Steel 224
  • Meets David Brown S1.53.101, 102, 103, 104
  • Meets Cincinatti Machine P34, 35, 59, 63, 74, 76-78

Health and Safety

Guidance on Health and Safety is available on the appropriate Material Safety Data Sheet, which can be obtained from your Shell representative.

Protect the Environment

Take used oil to an authorized collection point. Do not discharge into drains, soil or water.


Advice applications not covered in this leaflet may be obtained from your Shell representative.

Typical Physical Characteristics

Shell Omala S2 G 68 100 150 220 320 460 680 1000
ISO Viscosity Grade ISO 3448 68 100 150 220 320 460 680 1000
Kinematic Viscosity
at 40°C    mm2/s
at 100°C  mm2/s
ISO 3104  
Viscosity Index ISO 2909 99 100 100 100 100 97 92 85
Flash Point COC  °C ISO 2592 236 240 240 240 255 260 272 290
Pour Point °C ISO 3016 -24 -24 -24 -18 -15 -12 -9 -6
Density at 15°C kg/m3 ISO 12185 887 891 897 899 903 904 912 931

These characteristics are typical of current production. Whilst future production will conform to Shell's specification, variations in these characteristics may occur.