Mobil Pegasus 705
Low-ash mineral oil for natural gas engines and gas compressors
SAE 40
Jenbacher NX Oil 40 (SAE 40) is a high-performance gas engine oil formulated for the next generation of Jenbacher natural gas engines, developed as a major engine component in close cooperation between INNIO Jenbacher and ExxonMobil engineers. It represents a major advancement in gas engine lubrication, meticulously aligned with the Jenbacher engine platform to meet the evolving requirements of next-generation Type 2, 3, 4 and 6 engines running on 100% pipeline gas or blends with up to 60% hydrogen content. By integrating ExxonMobil's proprietary in-house technology with a high-viscosity-index base oil, Jenbacher NX Oil 40 delivers a significant performance step-up over standard gas engine oils, even in challenging environments. It is developed for fuel class A and can substitute all existing approved lubricants for pipeline gas engines per technical instructions TA 1000-1109, and is recommended for base-load, data-centre, peaking, fast-start and cold-start applications — it is the only officially tested product for the J701, J702, J711, J712, J715, J781, J782 and J783 versions. Key benefits include reliable cold-start capability, stable viscosity throughout the oil's life, improved dispersancy for cleaner oil at longer drain intervals, reduced fine-particle formation for longer filter life, and reduced combustion-chamber deposits for excellent valve protection.
| Property | Typical value | Method |
|---|---|---|
| Kinematic viscosity @ 40 Cmm2/s | 84 | ASTM D445 |
| Viscosity index | 148 | ASTM D2270 |
| Total base numbermgKOH/g | 7.4 | ASTM D2896 |
| Density @ 15 Cg/cm3 | 0.84 | ASTM D4052 |
| Kinematic viscosity @ 100 Cmm2/s | 13.1 | ASTM D445 |
| Ash, Sulfatedwt% | 0.6 | ASTM D874 |
| Pour point°C | <-35 | ASTM D97 |
| Flash point°C | 267 | ASTM D92 |
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