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mobil delvac mx diesel engine oil

Mobil Delvac MX™

High-performance diesel engine oil

Mobil Delvac MX is a high-performance diesel engine oil that helps extend engine life in severe on- and off-highway applications. Mobil Delvac MX meets or exceeds the API CI-4 PLUS service category.

Mobil Delvac MX also meets or exceeds the API SL specification for gasoline engines and mixed fleets. 

It is recommended by ExxonMobil for use in:

  • High-performance diesel applications, such as pre-2007 turbocharged, low emission engine designs, including those featuring exhaust gas recirculation (EGR) technology
  • Modern, high-output engines with EGR
  • Older engines operating on either low or high sulfur fuels
  • On-highway applications operating in both high-speed/high-load and short-haul, pick-up/delivery
  • Off-highway applications operating in severe low-speed/heavy-load conditions
  • Modern marine high-speed diesel engines, including Caterpillar, Cummins, Volvo, Daihatsu and Yanmar
  • Demanding diesel engines of Caterpillar, Cummins, Detroit Diesel, Mack, Mercedes-Benz, Navistar, Volvo and others
  • High-performance gasoline engines and mixed fleet operators
  • Diesel-powered equipment from American and Japanese original equipment manufacturers
  • On-highway heavy-duty trucking and off-highway, including construction, mining, quarrying and agriculture

The outstanding performance reserve of Mobil Delvac MX is the result of extensive cooperative development work with major original equipment manufacturers (OEMs) and advanced additive chemistry with patented Trimer technology. These enhancements assure excellent control of oil thickening due to soot buildup and exposure to higher temperatures, and provide outstanding resistance to oxidation, corrosion, wear and high-temperature deposits.

Features and benefits

Outstanding thermal and oxidation stability

  • Reduced low temperature sludge build-up and high temperature deposits

Extended TBN reserves

  • Improved soot handling and extended drain intervals

Stay-in-grade shear stability

  • Reduced oil consumption and wear protection Maintains viscosity in severe, high temperature service

Excellent low temperature pumpability

  • Easier engine start-up and reduced wear

Superb resistance to corrosion

  • Longer life of critical wear surfaces

Available viscosity grades

What does this viscosity mean?
  • 15W-40

    Specifications and approvals

    Mobil Delvac MX 15W-40 meets or exceeds the following industry and builder specifications:

    • API CI-4/CH-4/SL/SJ
    • ACEA E7
    • Caterpillar ECF-2
    • Cummins CES 20078, 20077, 20076
    • JASO DH-1

    Mobil Delvac MX 15W-40 has the following builder approvals:

    • MB-Approval 228.3
    • Mack EO-M PLUS/EO-N
    • Volvo VDS-3
    • MAN M3275-1
    • Renault Trucks RLD-2

    Mobil Delvac MX 15W-40 is recommended by ExxonMobil for use in applications requiring:

    • API CG-4/ CF-4/ CF
    • ACEA A2/B2
    • Volvo VDS-2
    • Renault Trucks RLD
    • Mack EO-M
    • Cummins CES 20072, 20071
    • Detroit 7SE 270 (4-Stroke Cycle)

    Technical details

    SAE Grade 15W-40
    Viscosity, ASTM D 445
    cSt @ 40ºC 123
    cSt @ 100ºC 15.6
    CCS, cP, ASTM D 5293 6000 @ -20ºC
    MRV, cP, ASTM D 4684 29,000 @ -25°C
    HTHS @ 150ºC, cP, ASTM D4683 4.3
    Viscosity Index, ASTM D 2270 133
    Sulfated Ash, wt%, ASTM D 874 1.3
    Total Base #, mg KOH/g, ASTM D 2896         12
    Pour Point, ºC, ASTM D 97 -30
    Flash Point, ºC, ASTM D 92 230
    Density @ 15ºC kg/l, ASTM D 4052 0.879


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



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