Shell Sirius X 40 is a Super High Performance Diesel Engine Oil formulated for high-speed diesel engines operating on distillate fuels, delivering outstanding piston cleanliness, wear protection, and extended drain intervals even under severe operating conditions.
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Shell Sirius X 40

Shell Sirius X 40 is a Super High Performance Diesel Engine Oil formulated for high-speed diesel engines operating on distillate fuels, delivering outstanding piston cleanliness, wear protection, and extended drain intervals even under severe operating conditions.

Category:

Shell Sirius X 40

High-performance engine oil for marine and industrial high-speed diesel engines

  • Outstanding piston cleanliness keeps rings free-running under difficult conditions

  • Exceptional protection against bore polishing, reducing blow-by and oil consumption

  • Retains high soot levels in suspension for superior engine cleanliness

  • High oxidation resistance, extending oil life in high-temperature environments

  • High reserve alkalinity (TBN-E 17) to neutralize acids and protect against corrosion

  • Approved by major OEMs including MTU (Type II), CWEC, MWM Deutz; meets Caterpillar 3600 Series and API CF requirements

Global Product Code: 001A9054



Application:

Shell Sirius X 40 is a top-tier SHPDO (Super High Performance Diesel Oil) developed to meet the needs of the highest output, high-speed diesel engines burning distillate fuels. It is ideal for use in marine propulsion systems and generator sets operating under severe loads and thermal stress, offering extended drain intervals and enhanced reliability.

Performance Features & Benefits:

  • Superior Piston Cleanliness: Ensures reliable engine operation by preventing ring sticking and carbon deposits.
  • Anti-Bore Polishing Performance: Controls blow-by and consumption while preserving cylinder wall integrity.
  • Advanced Soot Handling: Holds combustion residues in suspension, keeping engines clean even with extended oil drains.
  • Oxidation Resistance: Delivers twice the thermal stability of conventional oils under high-stress service.
  • Corrosion Protection: High TBN-E (17) formulation neutralizes acid formation and supports long drain intervals.

Main Application Areas:

  • High-speed marine diesel engines running on distillate fuels
  • Compact, high-output generator sets and industrial diesel systems

Specifications & Approvals:

  • API CF
  • MTU Type II (High Performance Category)
  • CWEC (Cummins Wärtsilä Engine Company)
  • MWM Deutz (e.g. TBD 620)
  • Meets requirements of Caterpillar 3600 Series

Environmental & Safety Information:

  • Avoid skin contact. Use impervious gloves when handling used oil. Wash thoroughly with soap and water after contact.
  • Do not discharge into drains, soil, or water. Return used oil to an authorized collection point.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Method
SAE Viscosity Grade 40 SAE J300
Kinematic Viscosity @ 40 °C 139 mm²/s ASTM D445
Kinematic Viscosity @ 100 °C 14 mm²/s ASTM D445
Density @ 15 °C 0.890 kg/l ASTM D4052
Flash Point (CC) 230 °C ASTM D93
Pour Point –18 °C ASTM D97
Total Base Number (TBN-E) 17 mg KOH/g ASTM D2896
Sulphated Ash 1.85 % ASTM D874

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