Mobil Pegasus 705

Specifications

Brand

Mobil (ExxonMobil)

Category

Engine oils

Viscosity

SAE 40

Manufacturer code

201525105010

Availability

On order

Approved for

• MAN
• Caterpillar
• MTU
• SAE
• Wärtsilä
• Rolls-Royce

Compatible vehicles

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, 220SG spark-ignited gas engine

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

Typical characteristics

Manufacturer's description

Mobil Pegasus 705 is a premium high-performance SAE 40 gas engine oil formulated to lubricate a wide range of natural gas fuelled engines, and is particularly recommended for newer stoichiometric and lean-burn high-speed four-cycle engines that are sensitive to valve face and seat wear. It is also suitable for lubricating gas compressors and other engines requiring a low-ash oil. The product is built from select high-quality mineral base oils with an advanced additive system that protects engine and compressor components while reducing combustion chamber deposits. Pegasus 705 delivers exceptional chemical stability and resistance to oxidation and nitration, giving longer oil life and lower filter replacement costs, along with outstanding detergency and dispersancy that minimise ash and carbon deposit formation. Its excellent anti-corrosion properties prevent corrosive wear in cylinders, valve areas and bearings, and its high anti-wear performance reduces wear of rings, liners and bearings, with dedicated protection for valve seats, faces and guides in highly loaded turbocharged four-cycle engines. Mobil Pegasus 705 carries a broad range of OEM approvals, including INNIO Jenbacher TI 1000-1108/1109, MAN M 3271-2, MTU Gas Engines S4000 series, MWM TR 0199-99-2105, Perkins Gas Engine Oil, several Wärtsilä gas engine series, and Rolls-Royce Solutions Augsburg (former MTU Onsite Energy) Series 400 engines, and it meets or exceeds Caterpillar requirements. Typical properties include SAE 40 grade, kinematic viscosity of 13.2 mm²/s at 100°C, viscosity index 98, sulfated ash of 0.5%, and a base number of 5.7 mg KOH/g.

Applications

• • High-speed lean-burn and stoichiometric gas engines sensitive to valve 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

Performance & benefits

• Excellent Anti-wear and Anti-scuff PropertiesReduced scuffing of liners of highly loaded gas engines Provides excellent break-in protection Cleaner engines Extended drain intervals
• Outstanding Detergency and Dispersancy PropertiesImproved upper cylinder performance Longer filter life

Standards & approvals

• INNIO Jenbacher TI 1000-1108

  INNIO Jenbacher TI 1000-1108 — gas-engine lubricating oil recommendation (Class A, Type 9)

  A related INNIO Jenbacher technical instruction, distinct from TI 1000-1109, cited specifically for Class A fuel gas, Type 9 engines.

• INNIO Jenbacher TI 1000-1109

  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.

• MAN M 3271-2

  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 Gas Engines Series 4000 (Natural Gas/Biogas)

  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 220SG

  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 28SG

  Wärtsilä 28SG — gas engine oil

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

• Wartsila 32DF

  Wartsila 32DF — medium-speed engine oil recommendation

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

• Wartsila 34SG

  Wärtsilä 34SG — gas engine oil

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

• Wartsila W12V150SG / W12V175SG / W16V175SG

  Wartsila W12V150SG / W12V175SG / W16V175SG — medium-speed gas engine oil recommendation

  Wärtsilä's lubricating-oil recommendation, shared across its W12V150SG, W12V175SG and W16V175SG gas engines.Source

• Wartsila 25SG

  Wartsila 25SG — medium-speed engine oil recommendation

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

• 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.

Fits

• Stationary gas engines