Mobil Delvac MX™ ESP 15W-40  

Mobil Commercial Vehicle Lube, Australia

Product Description

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 Manufacture (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, 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.


Features and Benefits

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:

FeaturesAdvantages and Potential Benefits
Superior soot-viscosity controlGreater engine efficiency, long engine life and long oil life
Outstanding thermal and oxidative stabilityReduced low temperature sludge build-up and high temperature deposits
Excellent oil consumption controlLower oil costs due to less make-up oil during operation
Excellent TBN reservesImproved corrosion protection and extended drain intervals
Stay-in-grade shear stabilityMaintains viscosity in severe, high temperature service for greater wear protection and long engine life
Excellent low temperature pumpabilityFaster oil flow and reduced wear during engine start-up in low temperatures
Superb resistance to corrosive and abrasive wearLong life of critical wear surfaces
Component compatibilityLong gasket, seal, and after treatment (DPF and DOC) life
Meets demanding specifications of key OEMs and latest API gasoline service categoryOne 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, European and Japanese OEMs


Specifications and Approvals

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, SLX
Caterpillar ECF-3X
Renault Trucks RLD-3X
Cummins CES 20081X
Isuzu DPD Equipped VehiclesX


Mobil Delvac MX ESP 15W-40  has the following builder approvals: 
Detroit Fluids Specifications 93K218 / 93K214X
Mack EO-N Premium Plus 03 / Mack EO-O Premium PlusX
MAN M3575X
Deutz DQC II-10 LAX
MB-Approval 228.31X
Volvo VDS-4/ VDS-3 / VDS-2X
Allison TES-439X


Mobil Delvac MX ESP 15W-40 is recommended by ExxonMobil for use in applications requiring: 
API CG-4, CF-4, CF-2, CFX
MAN M 3275-1X
Allison C-4X


Typical Properties

Mobil Delvac MX ESP 15W-40 
SAE Grade15W-40
Viscosity, ASTM D 445 
cSt @ 40ºC114
cSt @ 100ºC15.0
CCS, cP, ASTM D 52936500 @ -20ºC
MRV, cP, ASTM D 468419,000 @ -25ºC
HTHS @ 150ºC, cP, ASTM D46834.3
Viscosity Index, ASTM D 2270137
Sulfated Ash, wt%, ASTM D 8740.98
Total Base #, mg KOH/g, ASTM D 289610.4
Pour Point, ºC, ASTM D 97-30
Flash Point, ºC, ASTM D 92236
Density @ 15ºC kg/l, ASTM D 40520.876


Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDSs are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.

The Mobil logotype, the Pegasus design, and Delvac are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.

Mobil Oil Australia Pty Ltd
A.B.N. 88 004 052 984
12 Riverside Quay
Southbank Vic 3006
+61 3 8633 8444

Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification.  Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations.  The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit 
ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities.