Mobil Pegasus 705

Approved by

• MAN
• MTU
• Wärtsilä
• Jenbacher
• Perkins
• MWM

Standards & approvals

• INNIO Jenbacher TI 1000-1108

  Official approval

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

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

• INNIO Jenbacher TI 1000-1109

  Official approval

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

  INNIO Jenbacher's technical instruction 1000-1109, recommending oils for its gas engines by fuel-gas class and engine type.

• MAN M 3271-2

  Official approval

  MAN M 3271-2 — biogas engine oil

  MAN 3271 variant for biogas or landfill-gas engines, where the oil neutralises acids from gas impurities.

• MTU Gas Engines Series 4000 (Natural Gas/Biogas)

  Official approval

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

  MTU's oil recommendation for its Series 4000 gas engines running on natural gas or biogas.

Specifications

Brand

Mobil (ExxonMobil)

Range

Mobil Pegasus

Category

Engine oils

Viscosity

SAE 40

Manufacturer code

201525105010

Availability

On request

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 above rated capacity under high temperatures.
• Engines operating on fuel containing low levels of hydrogen sulphide.

Performance & benefits

• Excellent anti-wear and anti-scuff properties reduce scuffing of liners in highly loaded gas engines, provide excellent break-in protection, keep engines cleaner and extend drain intervals.
• Outstanding detergency and dispersancy properties improve upper-cylinder performance and give longer filter life.

Fits

• Stationary gas engines