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Sirius 15W-40

Oil for high speed marine diesel engines

Shell Sirius oils are high performance, multifunctional diesel engine lubricants designed for use in modern high speed (> 1200rpm) diesel engines, burning distillate fuels with a sulphur content of up to 1% wt.


  • high speed propulsion engines, e.g. coastal vessels, fishing trawlers, rescue boats and lifeboats
  • high speed engined generators

Performance Features and Benefits

Unique New Formulation

Shell technologists have developed exclusive formulations for the new generation of Sirius designed to deliver a step change in performance levels to improve the efficiency and life of your machinery.

Greater Protection and Higher Temperatures

With increasing power, modern engines have to work harder for longer, resulting in increased heat and stress on the engine oil. Sirius has been demonstrated to provide increased resistance to thermal breakdown ensuring continued protection throughout the drain interval, even under the most severe conditions.

Longer Oil Life

With their exclusive additive formulations, the new Sirius oils can fight the combined effects of combustion acids and increased heat for longer than their predecessors. This performance reserve ensures the oil continues to protect against wear and corrosion right up until the oil drain.

Approved by Leading Engine Makers

The new formulation Sirius engine oils meet a wide range of engine maker requirements.

Specification and Approvals

Sirius 15W-40 multigrade meets:

  • API CH-4
  • ACEA E3, E5
  • Caterpillar ECF-1
  • Cummins CES 200-71,-72, 76
  • Cummins (B&C Series) CES 200-75
  • GM Allison G4

and is approved against

  • Detroit Diesel/MTU Type I (Series 2000& 4000)
  • MAN 3275

Sirius 30 and 40 meet:

  • API CF
  • ACEA E2
  • Caterpillar TO-2
  • GM Allison G4

And are approved against

  • MTU Type I
  • MAN 270

Health and Safety

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

Protect the environment

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

Typical Physical Characteristics

SAE Viscosity grade   30 40 15W-40
Kinematic Viscosity
at 40°C            mm2/s
at 100°C          mm2/s
IP 71, ASTM D445  
Dynamic Viscosity
at -15°C           mPa*s
at -20°C           mPa*s
at -25°C           mPa*s
ASTM D 5293      
Viscosity Index ISO 2909, ASTM D2270 103 102 139
Density at 15°C kg/m3 IP 365, ISO12185 890 895 886
Flash Point PMCC  °C IP 94, ASTM D93 242 250 205
Pour Point  °C ISO 3016, ASTM D97 -18 -15 -39
TBNm mg KOH/g ISO 3771, ASTM D2896 7,5 7,5 10,8
Sulphated Ash  %  ASTM D874 1,0 1,0 1,44

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