Jenbacher N Oil 40
Gas engine oil for Jenbacher natural gas engines, approved for Types 2, 3, 4, 6 and 9
SAE 40
Mobil Pegasus 1100 Series is the latest generation of Mobil Pegasus high-performance gas engine oils, designed to give today's high-output, low-emission four-cycle gas engines the highest levels of protection while maintaining superior performance in earlier model engines. Both Mobil Pegasus 1105 and 1107 exhibit extraordinary oxidation stability, nitration resistance, TBN retention and thermal stability that extend oil life, with formulations balanced for outstanding anti-wear performance and controlled carbon/varnish deposit formation. Mobil Pegasus 1105 (0.5% sulphated ash, SAE 40) helps keep all types of piston engines running longer and cleaner with improved reliability, while Mobil Pegasus 1107 (0.65% sulphated ash, SAE 40) is tailored for high Brake Mean Effective Pressure (BMEP ≥ 22 bar) steel-piston engines, offering excellent alkalinity reserve and retention. Both are recommended for GE Jenbacher, MAN, MTU and other turbocharged or naturally aspirated, medium-to-high-speed four-cycle gas engines, lean-burn and stoichiometric designs under high load/temperature/pressure, high-speed cogeneration engines, natural gas engines with catalytic converters, and field gathering operations using low-H2S sour gas. The series has demonstrated at least 1.5x longer oil drain intervals versus competitive products, and holds an extensive approval list including Caterpillar Energy Solutions TR 2105 (CG132, CG170, CG260), INNIO Jenbacher TI 1000-1108/1109 across multiple engine types and fuel classes, MAN M 3271-2/-5, MWM TR 0199-99-2105, CUMMINS HSK78G, and several Bergen Engines (former Rolls-Royce Bergen) B/C/K-Type gas engine series.
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.
MAN M 3271-5 — gas engine oil
The most recent level in the MAN 3271 series for stationary gas engine oils.
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.
| Property | Typical value | Method |
|---|---|---|
| Ash, Sulfated, mass% | 0.65 | ASTM D874 |
| Base number - Xylene/Acetic Acidmg KOH/g | 7.3 | ASTM D2896 |
| Density @ 15.6 Cg/cm3 | 0.88 | ASTM D4052 |
| Flash point, Cleveland Open Cup°C | 261 | ASTM D92 |
| Kinematic viscosity @ 100 Cmm2/s | 13.1 | ASTM D445 |
| Kinematic viscosity @ 40 Cmm2/s | 113 | ASTM D445 |
| Pour point°C | -18 | ASTM D97 |
| Viscosity index | 112 | ASTM D2270 |
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