Mobil Pegasus 610 Ultra
High-TBN oil with 1.0% ash for landfill and biomass gas engines, extended drain intervals
- Stationary gas engines
SAE 40
Premium oil for biogas, landfill gas or digester gas engines
ViscositySAE
Recommended for
Same grade SAE 40 · Heavy-duty diesel
Same grade SAE 40 · Stationary gas engines
Same grade SAE 40 · Locomotives
Same grade SAE 40 · Medium-speed marine
Business customers only. We sell wholesale, invoiced to registered companies.
MWM TR 0199-99-2105 — gas engine oil
MWM technical requirement for oils in its own stationary gas engines, with controlled ash to protect the valves.
| Property | Typical value | Method |
|---|---|---|
| Kinematic viscosity @40°Cmm2/s | 135 | Astm D445 |
| Kinematic viscosity @100°Cmm2/s | 13.5 | Astm D445 |
| Density @15°Ckg/m3 | 890 | Astm D4052 |
| Flash point, closed cup°C | 230 | Astm D93A |
| Pour point°C | -18 | ISO 3016 |
| BNmg KOH/g | 5.3 | Astm D2896 |
| Sulphated ash%wt | 0.57 | ISO 3987 |
| Phosphorusppm | 300 | Astm D4047 |

Long-life, low-ash gas engine oil. Shell Mysella S5 S is a premium gas engine oil formulated for use in engines burning non-natural gases, such as corrosive petroleum gases, sewage gas and landfill gas. Shell Mysella S5 S has been specially developed to deliver an extended drain interval in biogas, sewage gas and landfill gas engines. Shell Mysella S5 S uses a formulation that has been optimised to resist the oxidative effects of the sulphuric and halogenic acids that are often present in these gases. Thanks to its low ash content, Shell Mysella S5 S minimises the lubricating oil's contribution to deposit formation in the combustion chamber.
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