Our Mobil SHC Pegasus™ Series gas engine oils provide maximum protection for high-output, low-emission four-cycle gas engines while also helping to increase fuel efficiency and reduce CO2 emissions. They are formulated for heavily loaded valve train components, pistons, liners, bearings and gear trains.
Proven to increase efficiency up to 1.5 percent*, these lubricants can also:
- Reduce the formation of carbon and varnish deposits
- Minimize oil consumption
- Maintain engine cleanliness during extended drain intervals
- Lower operating and maintenance costs
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Formulated to potentially help limit fuel consumption
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Promotes engine efficiency and reliability by helping control deposits in combustion chamber and piston ring zone
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Up to 1.5% increase in fuel efficiency compared to standard natural gas engine oils*
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Helps maximize engine availability through long drain intervals — more than 50,000 hours documented
Add up your savings
Use our calculator tools to estimate your operation’s potential savings for upgrading your conventional lubricant to Mobil SHC™ oil or grease. Then contact an ExxonMobil engineer or authorized dealer to further refine your estimate.
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Product information
Features and Benefits
Mobil SHC Pegasus is a leading member of the Mobil SHC brand of advanced performance industrial lubricants that enjoy a reputation for innovation, technology leadership and high performance capability.
Mobil SHC Pegasus offers the following features and potential benefits:
| Features | Advantages and Potential Benefits |
| Reduced Fuel Consumption | Patented technology proven to provide up to 1.5% reduction in fuel consumption compared to standard natural gas engine oils* |
| Extended Oil Life | Improves oil drain interval; reduces number of oil changes, fewer oil purchases, creates less waste oil and labor to help lower operating costs and increase engine availability Increased engine availability enables higher productivity |
| Keep Clean Performance | Helps control deposits in combustion chamber and piston ring zone to maximize engine efficiency and reliability Helps control deposits in heat exchangers to maximize heat production |
| Low Oil Consumption | Low oil volatility helps minimize engine and exhaust system deposits to help extend catalytic converter life and extend intervals between heat exchanger cleanings Helps reduce make up oil additions and lubricant purchases |
| High Level of Wear Protection | Helps control wear on critical engine components Maintains engine reliability and performance |
Applications
Mobil SHC Pegasus is designed for use in:
- Turbocharged, naturally aspirated, medium to high speed four-cycle engines requiring a low ash oil
- Lean-burn and stoichiometric four-cycle engines operating under high load, high temperature conditions
- High-speed four-cycle gas engines used in cogeneration applications
- Natural gas fueled engines equipped with catalytic converters
- Gas engines operating on fuel that contains low levels of H2S. Consult OEM for specific fuel gas and oil drain interval recommendations
Specifications and Approvals
| Mobil SHC Pegasus is recommended by ExxonMobil for use in the following applications | Mobil SHC Pegasus |
| Caterpillar (Acceptance) | X |
| Mobil SHC Pegasus has the following builder approvals: | Mobil SHC Pegasus |
| Waukesha Commercial Quality Natural Gas APG 1000 Approval | X |
Typical Properties
| Mobil SHC Pegasus | |
| SAE Grade | 30 |
| Viscosity, ASTM D 445 | |
| mm²/s @ 40ºC | 65 |
| mm²/s @ 100ºC | 10.5 |
| Viscosity Index, ASTM D 2270 | 162 |
| TBN, mg KOH/g | 5 |
| Pour Point, ºC, ASTM D 97 | -42 |
| Flash Point, ºC, ASTM D 92 | 255 |
| Density @ 15.6 ºC, ASTM D 4052, kg/l | 0.842 |
| Sulfated Ash, wt% ASTM D 874 | 0.5 |
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.
- Energy efficient
- Enhanced wear protection
- Extended life
- Keep clean
- Severe operating conditions
Technical resources
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An Oklahoma-based natural gas pipeline service provider switched to Mobil SHC Pegasus™ 30 synthetic oil for its natural gas engines and reported a 1.5 percent increase in fuel efficiency. Learn more. Success stories, PDF |
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Mobil Delvac 1™ ESP 5W-40 helps Grupo Construcciones Planificadas achieve annual operating cost savings by extending oil drain intervals and enhancing diesel engine life. Success stories, PDF |