- Mobil Pegasus 705 is a premium high performance SAE 40 gas engine oil formulated to lubricate a wide range of natural gas fuelled engines.
- It is recommended for the newer stoichiometric and lean burn high-speed four-cycle engines that are sensitive to valve face and seat wear.
- This oil is also recommended for the lubrication of the gas compressors and wide range of engines requiring low ash oil.
- Pegasus 705 is formulated from select high quality, mineral base oils and an advanced technology additive system engineered to provide excellent protection of engine and compressor components and reduced levels of combustion chamber deposits.
- It exhibits exceptional chemical stability and resistance to oxidation and nitration resulting in longer oil life and lower filter replacement costs.
- These performance advantages combined with outstanding detergency and dispersancy properties minimise the formation of ash and carbon deposits that could result in poor engine performance and detonation.
Specification and Approvals
Property
|
|
Grade
|
SAE 40
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Pour Point, °C, ASTM D97
|
-18
|
Ash, Sulfated, mass%, ASTM D874
|
0.5
|
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445
|
13.2
|
Flash Point, Cleveland Open Cup, °C, ASTM D92
|
252
|
Density 15 C, kg/L, CALCULATED
|
0.887
|
Base Number - Xylene/Acetic Acid, mg KOH/g, ASTM D2896 (*)
|
5.7
|
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445
|
126
|
Viscosity Index, ASTM D2270
|
98
|
(*) use of other ASTM approved solvents may yield different results.
Applications
High-speed lean-burn and stoichiometric gas engines sensitive to vlve seat recession
Crankcases and power cylinders of spark-ignited two and four-stroke cycle gas engines
Recommended for applications requiring low ash formulations
Reciprocating natural gas compressor cylinders
High output or ambient rated engines operating at or in excess of rated capacity under high temperatures
Engines operating on fuel containing low levels of hydrogen sulphide