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Mobil Delvac MX ESP 15W-40 

Mobil Delvac™ MX ESP 15W-40

Mobil Delvac MX ESP 15W-40 is an extra high performance diesel engine oil that helps extend engine life in the most severe on and off-highway applications while delivering outstanding performance in modern, high-output, low-emission engines including those with Exhaust Gas Recirculation (EGR) and Aftertreatment Systems with Diesel Particulate Filters (DPFs) and Diesel Oxidation Catalysts (DOCs). Fully backwards compatible, Mobil Delvac MX ESP 15W-40 will also deliver the same exceptional performance in older conventional engines. As a result, it meets or exceeds the requirements of the API CJ-4, CI-4 PLUS and CH-4 service categories as well as key Original Equipment Manufacturer (OEM) requirements.

Mobil Delvac MX ESP 15W-40 is the result of extensive cooperative development work with major OEMs and is recommended by ExxonMobil for use in a wide range of heavy duty applications and operating environments found in the trucking, mining, construction, quarrying, and agricultural industries. This product provides outstanding protection in the most demanding diesel engines of Caterpillar, Cummins, Detroit Diesel, Mack, Mercedes Benz, Navistar, Volvo, and others. Mobil Delvac MX ESP 15W-40 also meets or exceeds the requirements of the API SM specification for gasoline engines and mixed fleets.

Mobil Delvac MX ESP 15W-40 is formulated with Trimer additive technology and a mixed detergent system to deliver cutting-edge performance in both new and older engines. In addition to assuring excellent control of oil thickening due to soot build-up and outstanding TBN retention for long drain intervals, Mobil Delvac ESP 15W-40’s advanced technology also provides outstanding resistance to oil consumption, oxidation, corrosive and abrasive wear, and high temperature deposits.

The key benefits include:


Advantages and Potential Benefits

Superior soot-viscosity control

Greater engine efficiency, long engine life and long oil life

Outstanding thermal and oxidative stability

Reduced low temperature sludge build-up and high temperature deposits

Excellent oil consumption control

Lower oil costs due to less make-up oil during operation

Excellent TBN reserves

Improved corrosion protection and extended drain intervals

Stay-in-grade shear stability

Maintains viscosity in severe, high temperature service for greater wear protection and long engine life

Excellent low temperature pumpability

Faster oil flow and reduced wear during engine start-up in low temperatures

Superb resistance to corrosive and abrasive wear

Long life of critical wear surfaces

Component compatibility

Long gasket, seal, and after treatment (DPF and DOC) life

Meets demanding specifications of key OEMs and latest API gasoline service category

One engine oil for mixed fleet operations

Recommended by ExxonMobil for use in:

  • The latest low-emissions, high performance diesel applications equipped with aftertreatment systems using Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC) technologies.
  • High-performance diesel applications including turbo-charged designs featuring EGR Technology and diesel applications using older, naturally aspirated conventional designs.
  • On-highway heavy-duty trucking and off-highway including: construction, mining, quarrying, and agriculture.
  • 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
  • High performance gasoline engines and mixed fleet operations.
  • Diesel-powered equipment from American and European OEMs

Mobil Delvac MX ESP 15W-40 Meets or Exceeds the requirements of the following industry and builder specifications:

API CJ-4, CI-4 PLUS, CI-4, CH-4, SM, SL


Caterpillar ECF-3


Renault Trucks RLD-3

Cummins CES 20081

Isuzu DPD Equipped Vehicles


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

Detroit Fluids Specifications 93K218 / 93K214

Mack EO-N Premium Plus 03 / Mack EO-O Premium Plus

MAN M3575

Deutz DQC II-10 LA

MB-Approval 228.31

Volvo VDS-4/ VDS-3 / VDS-2

Allison TES-439


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

API CG-4, CF-4, CF-2, CF

MAN M 3275-1

Allison C-4

Mobil Delvac MX ESP 15W-40


SAE Grade


Viscosity, ASTM D 445


cSt @ 40ºC


cSt @ 100ºC


CCS, cP, ASTM D 5293

6500 @ -20ºC

MRV, cP, ASTM D 4684

19,000 @ -25ºC

HTHS @ 150ºC, cP, ASTM D4683


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