Shell Omala S4 WE 680 is a high-viscosity synthetic industrial gear oil based on polyalkylene glycol (PAG), engineered for enclosed worm gear systems requiring maximum wear protection, extended service life, and measurable energy efficiency.
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Shell Omala S4 WE 680

Old product name: Shell Tivela S

Shell Omala S4 WE 680 is a high-viscosity synthetic industrial gear oil based on polyalkylene glycol (PAG), engineered for enclosed worm gear systems requiring maximum wear protection, extended service life, and measurable energy efficiency.

Category:

Shell Omala S4 WE 680

( Previously named: Shell Tivela S )

PAG-based synthetic gear oil for high-load industrial worm gear applications

  • Designed for enclosed worm gears operating under severe load and temperature conditions

  • Exceptional thermal and oxidative stability for significantly extended oil drain intervals

  • Strong resistance to micro-pitting and shock loading to protect gear components

  • Demonstrated energy efficiency gains: up to 15% over mineral oils and 11% over synthetic hydrocarbons

  • Previously known as Shell Tivela S

  • Incompatible with mineral oils and most other synthetics; requires strict change-over procedure

  • Not recommended for aluminium components; suitable only for compatible seal materials like Viton

Global Product Code: 001D7860



Application:

Shell Omala S4 WE 680 is a fully synthetic industrial gear oil formulated with high-performance polyalkylene glycol (PAG) base fluids and advanced additives. It is engineered for worm drive systems requiring robust wear protection, long oil life, and improved efficiency. This product was formerly marketed as Shell Tivela S.

Performance Features & Benefits:

  • Long Oil Life: Excellent thermal and oxidative stability supports significantly extended maintenance intervals while maintaining system cleanliness.
  • High Wear Protection: Superior load-carrying and micro-pitting resistance ensures longevity of gear and bearing components, even under shock loads.
  • Energy Saving: Proven efficiency improvements of up to 15% compared to mineral oils and 11% over other synthetic hydrocarbons in worm gear rigs.

Main Application Areas:

  • Enclosed industrial worm gear systems under high load or temperature extremes
  • Extended-life systems in low-maintenance or inaccessible installations (e.g., wind turbine yaw gears)
  • Splash-lubricated and circulating bearing systems
  • Important: Not suitable for aluminium or aluminium alloy components

Specifications & Approvals:

  • DIN 51517-3 (CLP)
  • Validated by OEM and field testing

Environmental & Safety Information:

  • Minimize skin contact with used oil; use suitable protective equipment.
  • Do not discharge oil into drains or watercourses. Dispose at authorized collection sites.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Method
ISO Viscosity Grade 680 ISO 3448
Kinematic Viscosity @ 40 °C 664 mm²/s ISO 3104
Kinematic Viscosity @ 100 °C 107 mm²/s ISO 3104
Viscosity Index 259 ISO 2909
Flash Point (COC) 262 °C ISO 2592
Pour Point -39 °C ISO 3016
Density @ 15 °C 1070 kg/m³ ISO 12185
FZG Load Test (A/16.6/90) >12 DIN 51354-2

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