Mobil Delvac MX 131 15W-40

Mobil commercial-vehicle-lube , Saudi Arabia

Extra High Performance Diesel Engine Oil

Product Description

Mobil Delvac MX 131 15W-40 is an extra high performance diesel engine oil that provides excellent lubrication of today's diesel engines promoting long engine life. This extra high performance has been proven in the field in a wide variety of industries, applications, and mixed fleets.

The advanced chemistry of this product provides outstanding performance in both modern, demanding low-emission diesel engines and older diesel engines operating on low or high sulphur fuel. Mobil Delvac MX 131 15W-40 combines a blend of high performance base stocks with a balanced additive system to provide excellent control of oil thickening due to soot build-up and high temperatures as well as outstanding resistance to oxidation, corrosion, and high temperature deposits.


Features and Benefits

High output, low emission engines significantly increase demands on engine lubricants. Tighter engine design, use of inter-coolers, and turbochargers increase thermal stresses on the lubricant. Low emission engine technologies such as higher fuel injection pressure and retarded timing require improved oil performance in areas such as oxidation stability, soot dispersancy, and volatility. Mobil Delvac MX 131 15W-40 is formulated from high performance base oils and a balanced additive system to contribute to optimum engine performance in modern diesel as well as older models. The key potential benefits include:

FeaturesAdvantages and Potential Benefits
High thermal and oxidation stabilityHelps to reduce sludge build-up, deposits and viscosity increase
TBN reservesHelps to control deposit and acid neutralisation
Stay-in-grade shear stabilityHelps to provide wear protection and viscosity control
Advanced detergency/dispersancyClean engines and long component life
Improved soot handlingHelps to improve viscosity control and used oil pumpability
Excellent low temperature propertiesStart-up wear protection
Component compatibilityLong gasket and seal life
Meets demanding specifications of key OEMsOne engine oil for mixed fleet operations



      Recommended by ExxonMobil for use in:

  • Naturally aspirated and turbo-charged diesel powered equipment from leading Japanese, European, and American manufacturers
  • On-highway light and heavy-duty trucking
  • Off-highway industries including: construction, mining, quarrying, and agriculture
  • Mixed fleet applications


Specifications and Approvals

Mobil Delvac MX 131 15W-40 meets or exceeds the requirements of the following industry and builder specifications: 
Caterpillar ECF-2X


Mobil Delvac MX 131 15W-40 has the following builder approvals: 
MB-Approval 228.3X
Volvo VDS-3X
MAN M3275-1X


Mobil Delvac MX 131 15W-40 is recommended by ExxonMobil for use in applications requiring: 


Typical Properties

Mobil Delvac MX 131 15W-40 
SAE Grade15W-40
Viscosity, ASTM D 445 
cSt @ 40ºC105
cSt @ 100ºC14.1
Viscosity Index, ASTM D 2270136
Sulfated Ash, wt%, ASTM D 8741.2
Total Base # , mg KOH/g, ASTM D 289610.3
Pour Point, ºC, ASTM D 97-30
Flash Point, ºC, ASTM D 92231
Density @ 15ºC kg/l, ASTM D 40520.885


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. MSDS's are available upon request through your sales contract office or via the Internet, or wil be provided by seller to customers if and as legally required. 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 ExxonMobil Corporation, or one of its subsidiaries.


Jeddah, Saudi-Arabia

Tel: 00966-2-6081171 / Fax: 00966-2-6370966

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.