Skip to main content
Mobil Delvac CNG LNG 15W-40 natural gas engine oil

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 CNG (Compressed Natural Gas) and LNG (Liquefied Natural Gas), 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

  • 15W-40

    Specifications and approvals

    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

    Technical details

    SAE Grade 15W-40
    Viscosity, ASTM D 445
    cSt @ 40ºC 114
    cSt @ 100ºC 15.3
    Viscosity Index, ASTM D 2270 140
    Sulfated Ash, wt%, ASTM D 874 0.9
    Total Base #, mg KOH/g, ASTM D 2896        6.4
    Pour Point, ºC, ASTM D 97 -27
    Flash Point, ºC, ASTM D 92 215
    Density @ 15ºC kg/l, ASTM D 4052 0.871

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

Related products

Engine oils

Our oils can help to achieve long engine life with extended service intervals.

Heavy-duty grease

Protect hardworking parts from temperature extremes, rust and wear.

Transmission fluids

Get excellent protection against high temperature and high-speed wear.

More Mobil™ resources

Mechanic checking diesel engine oil

Mobil Delvac™ FAQs

Find answers to your product questions and more in our FAQs.

Person using global distributor locator tool

Find a distributor near you

Use our locator tool to find out where to buy Mobil Delvac™ products in your area.

Energy lives here