- Mobil Pegasus 610 Ultra is a high performance natural gas engine oil primarily intended for the lubrication of modern medium and high speed four-cycle engines operating on fuel that contains corrosive materials such as hydrogen sulphide or halogens (compounds containing chlorine, fluorine, etc.).
- This product is specially developed to cope with agressive gases with high levels of hydrogen sulphide which significantly limits the oil drain intervals and with high levels of siloxanes whose abrasive effects once burnt can significantly increase wear and reduce engine life.
Specification and Approvals
Property
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Grade
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SAE 40
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Kinematic Viscosity @ 100 C, mm2/s, ASTM D445
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12.9
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Viscosity Index, ASTM D2270
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107
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Density @ 15.6 C, g/ml, ASTM D1298
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0.875
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Pour Point, °C, ASTM D97
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-30
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Flash Point, Cleveland Open Cup, °C, ASTM D92
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259
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Ash, Sulfated, mass%, ASTM D874
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1.0
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Base Number - Xylene/Acetic Acid, mg KOH/g, ASTM D2896 (*)
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10.3
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(*) use of other ASTM approved solvents may yield different results
Applications
Gas engines operating on fuel that contains moderate to high levels of hydrogen sulphide (H2S) and high levels of siloxanes which turn to silicon dioxide in the combustion process causing significant deposits and liner wear.
Engines operating on fuel containing other corrosive components such as TOHCl (Total Organic Halides as Chloride)
Reciprocating compressors operating on natural gas that contains sulphur or halogens
High output or naturally aspirated engines operating at or in excess of rated capacity under high temperatures