Product Description
Mobil Pegasus 710 is a premium performance gas engine oil primarily intended
for the lubrication of modern high-speed four-cycle engines where oil
consumption is very low. These engines are generally of the lean-burn design
where increased manifold pressures prevent sufficient lubricant from getting
into the valve guide areas. This oil is also recommended for the lubrication
of gas compressors. It is formulated from high quality mineral base oils and
an advanced medium ash additive system designed to provide excellent
protection of engine and compressor components. It exhibits a high level of
chemical stability and resistance to oxidation and nitration. Pegasus 710
offers outstanding resistance to valve train wear and protection against
deposit formation. These performance advantages combined with its very
effective detergency and dispersancy system control the formation of ash and
carbon deposits that could result in poor engine performance and detonation.
Its high reserve alkalinity and TBN retention also makes it suitable for
engines operating on fuels that contain low amounts of corrosive materials
such as hydrogen sulphide. The excellent anti-corrosion properties prevent
corrosive wear in cylinders, valve areas and bearings resulting in longer
engine life. Mobil Pegasus 710 anti-wear and anti-scuff performance assures
minimal piston scuffing, scoring and cylinder and ring wear.
Features and Benefits
Mobil Pegasus 710 Gas Engine Oil provides cleaner engines, lower wear rates
and improved engine performance. The use of this product will result in
reduced maintenance costs and improved production capacity. Their excellent
chemical and oxidation stability results in longer drain periods and reduced
filter costs. The high reserve alkalinity of this product allows its use in
engines operating on fuels with low amounts of corrosive materials in the fuel
gas.
Features
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Advantages and Potential Benefits
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Outstanding Anti-wear and Anti-scuff Properties
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Lower wear of engine components Reduced scuffing of liners of highly
loaded gas engines Provides excellent break-in protection
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High Oxidation and Chemical Stability
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Cleaner engines Extended drain intervals Reduced filter costs
Excellent resistance to oxidation and nitration
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Innovative Medium Ash Formulation
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Protects valve seats and faces on four stroke-cycle engines Controls
combustion chamber ash formation and improves spark plug performance
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Excellent Corrosion Resistance
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Reduces valve guide wear in four stroke-cycle gas engines Protects
bearings and internal components
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Exceptional Reserve Alkalinity
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Controls formation of acids in the oil Protects engine components from
acidic attack
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Applications
- Spark ignited four-cycle gas engines with very low oil consumption
- Engines experiencing valve train wear and corrosion
- Engines operating on fuel containing low levels of sulphur and chlorine compounds
- Reciprocating compressor cylinders compressing natural gas
- High output or ambient rated engines operating at or in excess of rated capacity under high temperatures
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Specifications and Approvals

Mobil Pegasus 710 has the following builder approvals:
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| Waukesha (Cogeneration service engines) | X |
Typical Properties

Mobil Pegasus 710
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| SAE Grade | 40 |
| Viscosity, ASTM D 445 | |
| cSt @ 40º C | 121 |
| cSt @ 100º C | 13.2 |
| Viscosity Index, ASTM D 2270 | 98 |
| Sulfated Ash, wt%, ASTM D 874 | 0.94 |
| Total Base #, mg KOH/g, ASTM D 2896 | 6.5 |
| Pour Point, ºC, ASTM D 97 | -15 |
| Flash Point, ºC, ASTM D 92 | 249 |
| Specific Gravity 15.6º C/15.6º C, ASTM D 1298 | 0.896 |
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Health and Safety
Based on available information, this product is not expected to produce
adverse effects on health when used for the intended application and the
recommendations provided in the Material Safety Data Sheet (MSDS) are
followed. MSDS's are available upon request through your sales contract
office, or via the Internet. This product should not be used for purposes
other than its intended use. If disposing of used product, take care to
protect the environment.
Toxicity Class: free Bag T No.:611500
The Mobil logotype, the Pegasus design and Pegasus are trademarks of ExxonMobil Corporation, or one of its subsidiaries.
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