Brand
Mobil (ExxonMobil)
Type
Engine oils
Viscosity
SAE 40
Manufacturer code
201525106025

Mobil Pegasus 1005

Low-ash oil for four-stroke gas engines, compatible with catalytic converters

Specifications

Category
Engine oils
Viscosity
SAE 40
Manufacturer code
201525106025
Availability
On order

Approved for

Compatible vehicles

Caterpillar
MaK M20/M25/M32/M43 medium-speed gas engines
MAN
TGA, TGS, TGX
MTU
Series 4000 gas genset
Wärtsilä
25SG spark-ignited gas engine, 28SG gas engine, 32DF dual-fuel engine, 34SG gas engine, 50DF dual-fuel engine, 50SG large-bore gas engine, 175SG small-bore spark-ignited gas engine, 220SG spark-ignited gas engine

Derived from the vehicle makers' approvals this product meets. Check the specification your vehicle's manual requires.

Typical characteristics

PropertyTypical valueMethod
Base number - Xylene/Acetic Acidmg KOH/g5.4ASTM D2896
Pour point°C-25ASTM D97
Kinematic viscosity @ 100 Cmm2/s13.4ASTM D445
Viscosity index106ASTM D2270
Flash point, Cleveland Open Cup°C265ASTM D92
Kinematic viscosity @ 40 Cmm2/s121ASTM D445
Ash, Sulfated, mass%0.5ASTM D874
Density @ 15.6 Cg/cm30.855ASTM D4052

Complete documentation

We email you this product's sheets in a single archive.

Manufacturer's description

Mobil Pegasus 1005 is a high-performance gas engine oil designed to provide today's high-output, low-emission four-cycle gas engines with the highest levels of protection while maintaining superior performance in earlier model engines. Using high-quality base stocks and advanced additive technology, it delivers exceptional oxidation stability, nitration resistance and thermal stability, with a formulation balanced for outstanding anti-wear protection of heavily loaded valve train components, pistons, liners, bearings and gear trains, while maintaining compatibility with catalytic converter materials. Its detergent-dispersant system controls carbon and varnish deposit formation to minimize oil consumption and keep engines clean during extended drain intervals. Mobil Pegasus 1005 (SAE 40) is designed for use in Caterpillar, MWM GmbH (formerly Deutz Power Systems), Jenbacher, Rolls-Royce-Bergen, Wartsila, Waukesha and other turbocharged or naturally aspirated, medium-to-high-speed four-cycle engines requiring a low-ash oil, in lean-burn and stoichiometric designs under high load and temperature. It suits high-speed cogeneration engines, natural gas engines fitted with catalytic converters, alternate fuels with low sulfur or chlorine, and field gathering operations using sour gas with H2S content below 0.1% (1000 ppm). The product holds an extensive list of OEM approvals, including Caterpillar Energy Solutions TR 2105 (CG132, CG170, CG260), Caterpillar/MaK 4-Stroke Medium Speed Engines, INNIO Jenbacher TI 1000-1109 (Type 2, 3, 4B and 6E), INNIO Waukesha Engine 220GL and cogeneration applications, MAN M 3271-2, MTU Gas Engines S4000 and Series 4000, MWM TR 0199-99-2105, Perkins Gas Engine Oil, and multiple Wartsila and Bergen Engines (former Rolls-Royce Bergen) gas engine series, and meets API CF requirements.

Applications

  • Mobil Pegasus 1005 is designed for use in: • Caterpillar, MWM GmBh (Formerly Deutz Power Systems), Jenbacher, Rolls Royce-Bergen, Wartsila, Waukesha and other 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 • Applications using alternate fuels containing low levels of sulfur or chlorine • Field gathering operations where sour gas, with H2S content ‹ 0.1% (1000 ppm), may be used as fuel

Performance & benefits

  • Improves oil drain intervalreduces number of oil changes and oil purchases, creates less waste oil and labor to help lower operating
  • Extended Oil Life costs and increase engineavailability
  • Increased engine availabilityenables higher productivity
  • Keep Clean Helps control deposits incombustion chamber and on pistons to maximize engine efficiency and reliability
  • Performance Helps control deposits inheat exchangers to maximize heat production
  • Low oil volatility helpsminimize engine and exhaust system deposits to help extend catalytic converter life and extend intervals
  • Low Oil Consumption between heat exchangercleanings
  • Helps reduce make up oiladditions and lubricant purchases
  • Exceptional Wear Helps control wear on criticalengine components
  • Protection Maximizes engine reliabilityand performance

Standards & approvals

  • MWM TR 0199-99-2105

    MWM TR 0199-99-2105 — gas engine oil

    The MWM — today Caterpillar Energy Solutions — technical requirement for the oils in its own stationary gas engines, with controlled ash to protect the valves.

  • Caterpillar/MaK 4-Stroke Medium Speed Engines (Gas Operation)

    Caterpillar/MaK 4-stroke medium-speed engines — gas operation oil recommendation (incl. GCM-34)

    Caterpillar's (MaK) lubricating-oil recommendation for its 4-stroke medium-speed engines in gas operation, including the GCM-34.

  • INNIO Jenbacher TI 1000-1109 — gas-engine lubricating oil recommendation

    INNIO Jenbacher's technical instruction 1000-1109, recommending lubricating oils for its gas engines by fuel-gas class and engine type; the many class/type combinations cited in datasheets (Class A/B/C/S, Type 2-9, extended-drain, catalyst-approved, etc.) are all sub-conditions of this one document, not separate norms.

  • INNIO Waukesha 220GL — natural gas engine oil

    The INNIO Waukesha requirement for oil in the 220GL series running pipeline-quality gas, where ash must stay in the window that protects the valve seats without forming deposits.

  • INNIO Waukesha — cogeneration/gas-compression lube-oil recommendation (pipeline-quality gas)

    INNIO Waukesha's lubricating-oil recommendation for engines in cogeneration and gas-compression service running on pipeline-quality gas.

  • MAN M 3271-2 — biogas engine oil

    The MAN specification variant for engines running biogas or landfill gas, where the oil must neutralise the acids formed from gas impurities.

  • MTU Series 4000 gas engines — natural gas/biogas oil recommendation

    MTU's lubricating-oil recommendation for its Series 4000 gas engines (L32/L33/L61/L62/L63/L64 and related variants) running on natural gas or biogas, including MTU Onsite Energy gensets.

  • Perkins Gas Engine Oil - Natural Gas

    Perkins Gas Engine Oil - Natural Gas — natural-gas engine oil recommendation

    Perkins' lubricating-oil recommendation for its natural-gas engines.

  • Wartsila 175SG — medium-speed engine oil recommendation

    Wärtsilä's lubricating-oil recommendation for its 175SG medium-speed engine.

  • Wärtsilä 220SG — gas engine oil

    The Wärtsilä requirement for oil in its 220SG series stationary gas engines, with the ash level and alkaline reserve matched to the gas burned.Source

  • Wartsila 25SG — medium-speed engine oil recommendation

    Wärtsilä's lubricating-oil recommendation for its 25SG medium-speed engine.Source

  • Wärtsilä 28SG — gas engine oil

    The Wärtsilä requirement for oil in its 28SG series gas engines.Source

  • Wartsila 32DF — medium-speed engine oil recommendation

    Wärtsilä's lubricating-oil recommendation for its 32DF medium-speed engine.Source

  • Wärtsilä 34SG — gas engine oil

    The Wärtsilä requirement for oil in its 34SG series gas engines.Source

  • Wartsila 50DF — medium-speed engine oil recommendation

    Wärtsilä's lubricating-oil recommendation for its 50DF medium-speed engine.Source

  • Wartsila 50SG — medium-speed engine oil recommendation

    Wärtsilä's lubricating-oil recommendation for its 50SG medium-speed engine.Source

  • Diesel engine oil, API CF performance level

    API's service category for indirect-injection diesel engines, tolerant of higher-sulphur fuel. An earlier category in the API service classification, written for the engines of its era; it still appears on datasheets alongside the current categories.Source

Fits

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