Skip to main content
Mobil Delvac™ MX F2 15W-40 diesel oil

Mobil Delvac™ MX F2

High-performance diesel engine oil

This is a replacement to Mobil Delvac™ MX engine oil.

Mobil Delvac MX F2 is a high-performance diesel engine oil that helps extend engine life in severe on- and off-highway applications. Mobil Delvac MX F2 engine oil meets or exceeds the API CI-4 PLUS service category.

Mobil Delvac MX F2 engine oil 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
  • 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
  • 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 F2 engine oil 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 buildup 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 startup and reduced wear
  • Superb resistance to corrosion
  • Longer life of critical wear surfaces

  • 15W-40

    Specifications and approvals

    Mobil Delvac MX F2 15W-40 engine oil meets or exceeds the following industry and builder specifications:

    • API CI-4 PLUS, CI-4, CH-4 / SL, SJ
    • Caterpillar ECF-2
    • Cummins CES 20078, 20077, 20076

    Mobil Delvac MX F2 15W-40 engine oil is approved by the following OEMs:

    • Mack EO-M PLUS/EO-N PREMIUM PLUS 03
    • Volvo VDS-3
    • MAN M3275-1
    • Renault Trucks RLD-2
    • Detroit Fluids Specification 93K214

    Mobil Delvac MX F2 15W-40 engine oil is recommended by ExxonMobil for use in applications requiring:

    • API CG-4/ CF-4/ CF
    • ACEA E5
    • Volvo VDS-2
    • 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 6,000 @ -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 F2 15W-40 engine oil



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.

Mobil Delvac™ Behind the Wheel trucker standing in front of truck

Trucking #14

Learn about the satisfaction and pressure of hauling Tony Stewart’s racecar from Ken Gober, truck driver for the Stewart-Haas Racing team.

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