Mobil GEO 15W-40
Premium Natural Gas Engine Oil
Mobil GEO 15W-40 is a premium fleet engine oil specifically formulated to provide reliable protection for trucks and buses using Compressed Natural Gas (CNG) or Liquefied Natural Gas (LNG). Mobil GEO 15W-40 is formulated from high quality base stocks and a balanced additive system. This advanced medium ash formulation provides excellent oxidation, nitration, and thermal stability to minimize combustion chamber ash deposits. Mobil GEO 15W-40 lubricates with less varnish, sludge, and carbon build-up under the most severe operating conditions.
Datasheets
Features and Benefits
Modern high output, high speed, lean-burn diesel type engines using natural gas fuels place severe demands on engine lubricants. Mobil GEO 15W-40 is formulated to strict standards to deliver reliable engine performance in modern diesel type engines using natural gas as the primary fuel. The key benefits include:
• High thermal and oxidation stability helps control sludge build-up and deposits
• Reserve TBN neutralizes oxy acids and nitrates to reduce deposits
• Shear stability reduces oil consumption and provides bearing wear and cylinder liner scuff protection
• Effective detergency/dispersancy keeps engines cleaner
• Low levels of Zinc and Phosphorous help extend catalytic converter life
Applications
Recommended by ExxonMobil for use in:
• Spark ignited CNG and LNG-fueled lean-burn engines
• Dual fuel engines using diesel fuel for start-up and 15% diesel pilot fuel with CNG/LNG
• On-highway light and heavy-duty trucks and busses
Specifications and Approvals
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This product is recommended for use in applications requiring: |
|
CUMMINS CES 20074 |
Properties and Specifications
|
Property |
|
|
Grade |
SAE 15W-40 |
|
Ash, Sulfated, mass%, ASTM D874 |
0.5 |
|
Density @ 15.6 C, g/ml, ASTM D4052 |
0.88 |
|
Flash Point, Cleveland Open Cup, °C, ASTM D92 |
210 |
|
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 |
14.4 |
|
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 |
110 |
|
Pour Point, °C, ASTM D97 |
-27 |
|
Total Base Number, mgKOH/g, ASTM D2896 |
5 |
|
Viscosity Index, ASTM D2270 |
130 |