Shell Gadinia S3 30

Marine engine oils · Technical sheet

Shell Gadinia S3 30

SAE 30Mineral (highly refined mineral oils and additives)

Trunk-piston engine oil for medium-speed marine engines burning distillate fuel.

KV 40 °C
104 mm²/s
KV 100 °C
11.9 mm²/s
BN
12 mg KOH/g
Flash point
210 °C

In the store from $1,135.95.

Use it for

  • Highly rated medium-speed main propulsion and auxiliary trunk-piston engines on distillate, hybrid and bio-fuels up to 1 % sulphur
  • Smaller high-speed engines with small sumps
  • Turbochargers, oil-filled stern tubes, variable-pitch propellers and deck machinery that call for SAE 30

Specifications and approvals

Non-engine approvals

Simplex B&VOrtlinghausStromagREINTJESRENK RheineRENK AugsburgSiemens/FlenderEverllence (formerly MAN ES) Alpha (meets)

Shell states Gadinia S3 is approved by leading trunk-piston engine manufacturers. Check the engine maker's list for your engine.

Typical properties

Source: Shell Marine Pocketbook 2025. Typical values, not specifications.
Kinematic viscosity at 40 °C104 mm²/s
Kinematic viscosity at 100 °C11.9 mm²/s
Base number (BN)12 mg KOH/gASTM D2896
Flash point210 °C
Pour point−21 °C
Density at 15 °C890 kg/m³
FZG failure load stage12ISO 14635-1
20304050Gadinia S3 3011.9 mm²/s6.99.312.516.321.9KV at 100 °C, mm²/s

What Shell says it does

  • Controls liner lacquering, which helps keep oil consumption in check in modern high-output distillate engines.
  • Detergent and dispersant chemistry keeps pistons, undercrowns, ring belts and crankcases clean.
  • Tolerates overload and poor combustion, and separates water well in the purifier.
  • Its gearbox, clutch and stern-tube approvals let a smaller vessel carry one oil for several systems.

Shell advises care when switching from Argina (residual fuel) to Gadinia S3 on distillate, to avoid sludge.

Shell and the Shell product names are trademarks of the Shell group of companies. Approvals and specifications vary by region and data-sheet version; always check the pack and follow the equipment maker's manual. Online payment is currently unavailable; call or email the office to order.