Mobil Pegasus 1100 Series Gas Engine Oil

Description

Mobil Pegasus 1100 Series is the latest generation of high-performance gas engine oils from Mobil, specifically developed for modern high-output, low-emission four-cycle gas engines. It delivers exceptional engine protection while also maintaining excellent performance in older engine models.

Mobil Pegasus 1105 and Mobil Pegasus 1107 offer outstanding oxidation stability, nitration resistance, thermal stability, and Total Base Number (TBN) retention, helping to extend oil life and ensure reliable engine operation. Their advanced formulations are designed to provide longer service intervals, excellent wear protection, and effective control of carbon and varnish deposit formation.

Mobil Pegasus 1105 (0.5% sulphated ash) helps engines operate cleaner and longer, improving reliability and enhancing overall productivity.

Mobil Pegasus 1107 (0.65% sulphated ash) is specially formulated for high Brake Mean Effective Pressure (BMEP ≥ 22 bar) steel piston engines. It supports longer engine life, cleaner operation, superior alkalinity retention, and improved reliability, resulting in increased productivity.

Features & Benefits

Mobil Pegasus 1105 and Mobil Pegasus 1107 are long-drain gas engine oils that have demonstrated oil drain intervals up to 1.5 times longer than many competing products in high-performance natural gas engines. As part of the trusted Mobil industrial lubricant portfolio, they are recognized for technological innovation and outstanding performance.

  • Advanced detergent-dispersant technology helps control carbon and varnish deposits, reducing oil consumption and maintaining engine cleanliness during extended drain intervals.
  • Excellent oxidation stability, nitration resistance, and thermal stability contribute to longer oil life, lower filter replacement costs, and reduced deposit formation.
  • Superior anti-wear protection minimizes engine component wear, reduces liner scuffing in heavily loaded gas engines, and provides effective protection during engine break-in periods.
  • Strong alkalinity reserve supports engine durability, maintains performance, and helps extend oil drain intervals.
Applications
  • GE Jenbacher, MAN, MTU, and other turbocharged or naturally aspirated medium- to high-speed four-cycle gas engines requiring premium-performance lubricants.
  • Lean-burn and stoichiometric four-cycle gas engines operating under high-load, high-temperature, and high-pressure conditions.
  • High-speed four-cycle gas engines used in cogeneration and power generation applications.
  • Natural gas-powered engines equipped with catalytic converters.
  • Field gas gathering operations where sour gas containing low levels of H₂S is used as fuel.
Specifications and Approvals
This product has the following approvals: 1105 1107
Bergen Engines AS (former Rolls-Royce Bergen) B 35:40 Gas Engines X
Bergen Engines AS (former Rolls-Royce Bergen) B 36:45 Gas Engines X

 

This product has the following approvals: 1105 1107
Bergen Engines AS (former Rolls-Royce Bergen) C-Type Gas Engines X
Bergen Engines AS (former Rolls-Royce Bergen) K-Type Gas Engines X
CUMMINS HSK78G (Natural Gas) X
Caterpillar Energy Solutions TR 2105, Lube Oils for Gas Engines (CG132, CG170, CG260) X
INNIO Jenbacher TI 1000-1108 (Class A fuel gas, Type 9) X
INNIO Jenbacher TI 1000-1109 (CAT (catalyst) approved) X X
INNIO Jenbacher TI 1000-1109 (Class A fuel gas, Series 4B & 4C, extended drain) X
INNIO Jenbacher TI 1000-1109 (Class A fuel gas, Type 2 & 3, extended drain) X X
INNIO Jenbacher TI 1000-1109 (Class A fuel gas, Type 4 all versions, extended drain) X
INNIO Jenbacher TI 1000-1109 (Class A fuel gas, Type 6 all versions, extended drain) X
INNIO Jenbacher TI 1000-1109 (Class A fuel gas, Type 6 up to version E, extended drain) X
INNIO Jenbacher TI 1000-1109 (Class S special gas applications) X
MAN M 3271-2 X
MAN M 3271-5 X
MWM TR 0199-99-2105, Lube Oils for Gas Engines X
Rolls-Royce Solutions Augsburg (former MTU Onsite Energy) Gas Engines Series 400 – all engines with natural gas and propane gas X

Properties and Specifications

Property 1105 1107
Grade SAE 40 SAE 40
Ash, Sulfated, mass%, ASTM D874 0.5 0.65
Base Number – Xylene/Acetic Acid, mg KOH/g, ASTM D2896 6.2 7.3
Density @ 15.6 C, g/cm3, ASTM D4052 0.88 0.88
Flash Point, Cleveland Open Cup, °C, ASTM D92 261 261
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 13.1 13.1
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 113 113
Pour Point, °C, ASTM D97 -18 -18
Viscosity Index, ASTM D2270 112 112

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