Shell Mysella S3 S 40

Anti-wear, r&o gas engine oil

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Key specs

SpecValueMethod
KV40139 cStASTM D445
KV10014 cStASTM D445
Viscosity index—ASTM D2270
Pour point-18 °CASTM D97
Flash point230 °CASTM D92
Density at 15 °C0.894 g/cm³typical

Grade checks

Viscosity and temperature

ASTM D341 (Walther) fitted to the published KV40 and KV100. It is an interpolation between those two points, and it is not meaningful below the pour point. Move the control to read a temperature.

0 °C120 °C


Classification

Equivalents

OilScoreWhy
Mobil Pegasus 50543KV40 within 10%, additive aw, conventional, pour -15 vs -18, flash within 15 °C
Mobil Pegasus 605 Ultra 4038KV40 within 10%, additive aw, conventional, pour -21 vs -18
Mobil Pegasus 61038KV40 within 10%, additive aw, conventional, pour -18 vs -18
Mobil Pegasus 70138KV40 within 10%, additive aw, conventional, pour -15 vs -18
Mobil Pegasus 80538KV40 within 10%, additive aw, conventional, pour -12 vs -18

Scores use published typical data. This is not an exact equivalent, and it is not an OEM approval. Confirm the substitute with the machine builder.

Documents

Related: Shell, Mysella S3 S, viscosity index calculator, ISO / SAE / AGMA chart.

Questions

What is a Shell Mysella S3 S 40 equivalent?

No other brand in this catalogue clears the equivalents bar for this oil yet (same application, same grade, compatible base oil, and a score of 60 or more). That is not proof that nothing else works. Check the machine manual.

Can Shell Mysella S3 S 40 be mixed with another oil?

Mixing two oils that share a base family is sometimes done and sometimes a mistake. Do not mix this oil with a PAG. For any other mix, follow the maker's change-over guidance and the machine manual.

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