Mobil Delvac™ CNG/LNG

High-performance, heavy-duty engine oil for spark-ignited, CNG- and LNG-fueled trucks and buses

Mobil Delvac™ CNG/LNG engine oil provides excellent performance in the challenging operating environments presented by Compressed Natural Gas (CNG) and Liquefied Natural Gas (LNG), and offers extended drain interval capability.

It is a high-performance, heavy-duty engine oil formulated specifically for spark-ignited, CNG- and LNG-fueled truck and bus engines.

  • Spark-ignited, CNG/LNG-fueled stoichiometric and lean-burn engines
  • Extended drain interval capability
  • Compatible with Exhaust Gas Recirculation (EGR) Systems, Three-Way Catalysts, and other emissions reduction systems

Features and benefits

Thermal stability and oxidation/nitration control

  • Extended drain interval capability

Advanced wear protection

  • Helps toward long engine life

Effective detergency/dispersancy

  • Engine cleanliness

Optimized ash level

  • Helps protect against excessive valve recession and spark plug fouling

Shear stability

  • Engine durability

Specification, Approvals and Technical details

Technical details  

Mobil Delvac CNG/LNG 15W-40 meets or exceeds the requirements of:

  • Cummins CES 20085
  • Isuzu CNG Engine Oil

Mobil Delvac CNG/LNG 15W-40 has the following builder approvals:

  • Detroit Fluids Specification 93K216

Specification and Approvals  

SAE Grade


Viscosity, ASTM D 445


cSt @ 40ºC


cSt @ 100ºC


Viscosity Index, ASTM D 2270


Sulfated Ash, wt%, ASTM D 874


Total Base #, mg KOH/g, ASTM D 2896


Pour Point, ºC, ASTM D 97


Flash Point, ºC, ASTM D 92


Density @ 15ºC kg/l, ASTM D 4052


View product data sheet for Mobil Delvac™ CNG/LNG 15W-40.
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