Mobil Pegasus 1 Gas Engine Oil Product Description Mobil Pegasus™ 1 is a high performance synthetic gas engine oil designed to meet the highest performance requirements of the most demanding naturally aspirated and turbocharged stoichiometric and lean-burn gas engines. It is formulated from wax-free synthetic base oils and a balanced additive system to provide performance that is unattainable with conventional mineral oil-based gas engine oils. The potential benefit is an improved bottom line through improved engine and oil life, reduced maintenance costs and lower fuel costs. The unique formulation of Mobil Pegasus 1 minimises ash deposits, piston land and ring belt deposits, liner scuffing, and valve seat and valve face wear. It has outstanding resistance to oxidation and the inherently high viscosity index of the synthetic base oil components ensure a protective lubricant film at high temperatures well above the limit for mineral oil-based products. Mobil Pegasus 1 exhibits low volatility, a performance characteristic that helps reduce oil consumption and improve valve lubrication performance measurably. Its unique viscometrics and low traction coefficient reduce power losses and provide potential fuel economy benefits, particularly under variable load, speed and temperature conditions. Features and Benefits The state-of-the art technology used in Mobil Pegasus 1 is designed to provide a high level of engine performance in a wide range of high-output gas engines. Its outstanding oxidation resistance and thermal stability provide extended service life for both the engines and the oil. In addition, the unique properties of Pegasus 1 will result in lower internal friction under cold start-up and hot running conditions resulting in reduced wear and potentially lower fuel consumption. The use of this product will result in lower maintenance costs through its extended service life capability, reduced filter costs and improved engine life. Features Advantages and Potential Benefits Balanced Synthetic Formulation Extended drain intervals and improved engine life Longer filter life potential Cleaner engines Outstanding Oxidation and Thermal Stability Reduced levels of ring land and ring groove carbon Improved valve guide performance Lower levels of carbon/coking deposits Excellent High and Low Temperature Performance Effective lubrication under cold startup conditions
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Mobil Pegasus 1
Gas Engine Oil
Product Description
Mobil Pegasus™ 1 is a high performance synthetic gas engine oil designed to meet the
highest performance requirements of the most demanding naturally aspirated and
turbocharged stoichiometric and lean-burn gas engines. It is formulated from wax-free
synthetic base oils and a balanced additive system to provide performance that is unattainable
with conventional mineral oil-based gas engine oils. The potential benefit is an improved
bottom line through improved engine and oil life, reduced maintenance costs and lower fuel
costs.
The unique formulation of Mobil Pegasus 1 minimises ash deposits, piston land and ring belt
deposits, liner scuffing, and valve seat and valve face wear. It has outstanding resistance to
oxidation and the inherently high viscosity index of the synthetic base oil components ensure
a protective lubricant film at high temperatures well above the limit for mineral oil-based
products. Mobil Pegasus 1 exhibits low volatility, a performance characteristic that helps
reduce oil consumption and improve valve lubrication performance measurably. Its unique
viscometrics and low traction coefficient reduce power losses and provide potential fuel
economy benefits, particularly under variable load, speed and temperature conditions.
Features and Benefits
The state-of-the art technology used in Mobil Pegasus 1 is designed to provide a high level of
engine performance in a wide range of high-output gas engines. Its outstanding oxidation
resistance and thermal stability provide extended service life for both the engines and the oil.
In addition, the unique properties of Pegasus 1 will result in lower internal friction under cold
start-up and hot running conditions resulting in reduced wear and potentially lower fuel
consumption. The use of this product will result in lower maintenance costs through its
extended service life capability, reduced filter costs and improved engine life.
Features Advantages and Potential Benefits
Balanced Synthetic Formulation
Extended drain intervals and improved engine
life
Longer filter life potential
Cleaner engines
Outstanding Oxidation and Thermal Stability
Reduced levels of ring land and ring groove
carbon
Improved valve guide performance
Lower levels of carbon/coking deposits
Excellent High and Low Temperature
Performance
Effective lubrication under cold startup
conditions
Features Advantages and Potential Benefits
Easier engine cranking at low temperatures
Improved engine protection under high
temperature conditions
Naturally High Viscosity Index Wide temperature performance
Low Volatility
Reduced oil consumption
Reduced deposit formation in critical engine
areas
Exceptional Anti-wear and Anti-scuff
Protection
Resists wear and scuffing of liners and pistons
particularly in high BMEP engines
Low Traction Coefficient
Potential for lower fuel costs
Improved engine power
Easier starting
Applications
Mobil Pegasus 1 is recommended for a wide range of gas engine models.
The product is particularly suited for high speed, four-cycle turbocharged and
naturally aspirated gas engines requiring a nominal 0.5% ash gas engine oil.
It is an excellent lubricant for both stoichiometric and lean-burn designs
It is ideally suited for cogeneration and ebullient cooled applications because of its
wide temperature range capability and extended engine protection and long oil life.
Mobil Pegasus 1 is fully compatible with all seals commonly used in gas engines and
with mineral oils but admixture with mineral oils will lower the performance benefits
that can be obtained from this outstanding lubricant
May be used with gas engines using alternative energy sources for fuel gas containing
up to 0.3% sulphur as hydrogen sulphide
Specifications and Approvals
Mobil Pegasus 1 has the following builder approvals:
MB 226.9
MAN: M 3271-1
MAN: M 3271-2
MWM GmbH TR 0199-99-2105, Lube Oils for Gas Engines
WAUKESHA: COGENERATION
WAUKESA: 12V / 18V 220 GL Applications
VOLVO: CNG FUELED BUS ENGINES
WARTSILA NSD: W25SG
Typical Properties
Mobil Pegasus 1
SAE Grade SAE 15W-40
Viscosity, ASTM D 445
cSt @ 40º C 93.8
cSt @ 100º C 13.0
Viscosity Index, ASTM D 2270 137
Sulfated Ash, wt%, ASTM D 874 0.5
Total Base #, mg KOH/g, ASTM D 2896 6.5
Pour Point, ºC, ASTM D 97 -48
Flash Point, ºC, ASTM D 92 238
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.
The Mobil logotype, the Pegasus design are trademarks of Exxon Mobil Corporation, or one
Mobil Pegasus 610 is a high performance 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.). These engines are generally of the lean-burn turbo charged design where
increased manifold pressures prevent sufficient lubricant from reaching the valve guide areas
resulting in low oil consumption which can lead to accelerated valve guide and valve
recession. This effect also increases the potential for wear and acid attack of upper cylinder
components from the acidic materials generated during combustion. The Mobil Pegasus 610
is a 1.0% ash, high TBN gas engine oil with exceptional reserve alkalinity designed to offset
the negative effects of these corrosive materials on engine components. The excellent
corrosion protection properties prevent corrosive wear in cylinders, valve areas and bearings
which can result in longer engine life and lower maintenance costs. Mobil Pegasus 610
provides excellent anti-wear and anti-scuff performance assuring minimal piston scuffing,
scoring and cylinder and ring wear. This oil can also be used for the lubrication of the
reciprocating compressors in landfill and biomas gas applications.
Mobil Pegasus 610 is formulated from high quality mineral base oils combined with an
advanced technology 1.0% ash additive system designed to provide excellent protection of
engine and compressor components. This product exhibits a high level of chemical stability
and resistance to oxidation and nitration. Mobil Pegasus 610 offers outstanding resistance to
valve train wear and protection against deposit and sludge formation. These performance
advantages combined with the very effective detergency and dispersancy characteristics
control the formation of ash and carbon deposits that could result in poor engine performance
and detonation.
Features and Benefits
Mobil Pegasus 610 Gas Engine Oil provides an additional margin of protection in those
applications using contaminated fuel. Its excellent detergent / dispersant technology also
results in cleaner engines, lower wear rates and improved engine performance. The use of this
product can result in reduced maintenance costs and improved production capacity. Its
excellent chemical and oxidation stability can result in longer drain periods and reduced filter
costs. The high reserve alkalinity of this product allows its use in engines operating on fuels
with moderate amounts of corrosive materials in the fuel gas.
Features Advantages and Potential Benefits
High TBN and Reserve Alkalinity
Controls wear and corrosion when using
contaminated gas
Protects valve seats and faces on four-cycle
engines
Controls combustion chamber ash formation
and improves spark plug performance
Outstanding Anti-wear and Anti-scuff
Properties
Lower wear of engine components
Reduced scuffing of liners in highly loaded
gas engines
Provides excellent break-in protection
Excellent Oxidation and Chemical Stability
Cleaner engines
Extended oil drain intervals
Reduced oil filter costs
Excellent resistance to oxidation and nitration
Effective Corrosion Resistance
Reduces valve guide wear in four-cycle gas
engines
Protects bearings and internal components
Exceptional Detergent / Dispersant Properties
Neutralises formation of acids in the oil
Protection of upper cylinder and valve train
components
Cleaner engines
Longer oil filter life
Non-zinc and Non-Phosphorus Formulation Extend catalytic converter life and
performance
Applications
Gas engines operating on fuel that contains moderate levels of hydrogen sulphide
(H2S)
Engines operating on fuel containing other corrosive components such as TOHCl
(Total Organic Halides as Chloride), landfill or biomass gases
Spark ignited four-stroke cycle gas engines with very low oil consumption
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
Specifications and Approvals
Mobil Pegasus 610 has the following builder approvals: Waukesha for landfill gas applications Wartsila for Crepelle 26 dual-fuel applications GE Jenbacher for TI 1000-1109 (Class C fuel gas, Series 2 & 3) GE Jenbacher for TI 1000-0125 (Landfill, Series 2 &3) GE Jenbacher for TI 1000-1105 (Biogas, Series 2 &3)
Typical Properties
Mobil Pegasus 610
SAE Grade 40
Viscosity, ASTM D 445
cSt @ 40°C 131
cSt @ 100°C 13.3
Viscosity Index, ASTM D 2270 98
Sulfated Ash, wt%, ASTM D 874 1.0
TBN #, mg KOH/g, ASTM D 2896 10.8
Pour Point, °C, ASTM D 97 -18
Flash Point, °C, ASTM D 92 257
Density @ 15.6ºC, kg/l, ASTM D 4052 0.889
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.
The Mobil logotype, the Pegasus design are trademarks of ExxonMobil Corporation, or one of
Mobil Pegasus 805 is premium performance gas engine oil engineered to meet the rigorous
demands of today's high output four-cycle engines designed to reduce emissions and improve
fuel-efficiency. These gas engines generally operate under high load and high temperature
conditions. Mobil Pegasus 805 is made from the highest quality base stocks and an advanced
technology additive system that provides exceptional oxidation stability, nitration resistance
and thermal stability. Its detergent and dispersant system controls the formation of carbon
deposits, lacquer and sludge resulting in cleaner engines, longer oil life and reduced filter
costs.
Mobil Pegasus 805 is also designed to provide exceptional protection against piston scuffing,
scoring and ring and liner wear. It exhibits excellent resistance to foaming, good demulsibility
and protection against corrosion. It is formulated with very low levels of zinc and phosphorus
making it compatible with engines equipped with catalytic converters.
Features and Benefits
Mobil Pegasus 805 is designed to provide optimum engine life and low maintenance costs. It
meets a wide range of OEM requirements making it an excellent choice where high-speed
four-cycle engines from various OEMs are used. Its unique innovative technology allows for
control of valve train component wear and reduces the potential for scuffing, scoring and
accelerated piston and ring wear. The end result is lower costs of operating and maintaining
your gas engines.
Features Advantages and Potential Benefits
Exceptional Oxidation and Nitration
Resistance
Cleaner engines
Longer oil and filter service
Improved engine performance
Outstanding Anti-wear and Anti-scuff
protection
Reduced scoring, scuffing and wear of pistons
and liners
High level of protection in fully loaded
engines
Reduced maintenance costs
Advanced Technology Additive System
Excellent protection of valve train components
Reduced levels of combustion chamber ash
Improved spark plug life
Very Effective Corrosion Protection
Protects internal engine components from
water, coolant and acidic materials
Neutralizes acids formed from combustion or
oil degradation
Features Advantages and Potential Benefits
Excellent Detergent / Dispersancy
Performance
Protects valve train components
Reduces ash and carbon deposits in
combustion chambers
Improves spark plug life and performance
Reduces filter replacement costs
Applications
Caterpillar, Superior, Waukesha and other turbocharged, naturally aspirated, medium
to high speed four-cycle engines requiring a low ash oil
Engines experiencing valve face and seat wear
Lean-burn and stoichiometric four-cycle engines
Engines equipped with catalytic converters
Applications using alternate fuels containing low levels of sulfur or chlorine
In field gathering operations where sour gas (low levels of H2S) is used as fuel
Specifications and Approvals
Mobil Pegasus 805 meets or exceeds the requirements of: CATERPILLAR X
Mobil Pegasus 805 has the following builder approvals: MWM GmbH TR 0199-99-2105/7, Lube Oils for Gas Engines X GE Jenbacher TI 1000-1105 (Biogas, Series 2 & 3) X GE Jenbacher TI 1000-1106 X GE Jenbacher TI 1000-0125 (Landfill, Series 2 & 3) X Wartsila 34SG X Wartsila 32DF X Wartsila 28SG X Wartsila 220 SG X Waukesha (Cogeneration) X
Typical Properties
Mobil Pegasus 805
SAE Grade 40
Viscosity, ASTM D 445
cSt @ 40º C 130
cSt @ 100º C 13.5
Viscosity Index, ASTM D 2270 99
Sulfated Ash, wt%, ASTM D 874 0.5
Foam Resistance, ASTM D 892 Seq I, Tendency/Stability, ml/ml 0/0
Total Base #, mg KOH/g, ASTM D 2896 6.2
Pour Point, ºC, ASTM D 97 -12
Flash Point, ºC, ASTM D 92 262
Specific Gravity 15.6º C/15.6º C, ASTM D 4052 0.89
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.
The Mobil logotype, the Pegasus design and Pegasus are trademarks of ExxonMobil