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Mobil Delvac MX 15W-40

Extra High Performance Diesel Engine Oil

Product Description

Mobil Delvac MX 15W-40 is an extra high performance diesel engine oil that provides excellent lubrication of today's diesel engines promoting extended engine life. As a result, this product meets or exceeds the specifications of virtually all major European and American engine manufacturers. 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 15W-40 combines a blend of high performance base stocks with a progressive additive system to provide superior 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 diesel engines significantly increase the demands on engine lubricants. Tighter engine designs reduce oil consumption, resulting in less fresh oil make-up to replenish depleted additives. Top piston fire rings are located higher on the piston bringing the oil film closer to the combustion chamber where higher temperatures increase thermal stress on the lubricant. Increased fuel injector pressure and retarded timing improve fuel burn efficiency, but also increase engine temperatures and increase soot loads. Mobil Delvac MX 15W-40 is formulated from high performance base oils and a superior balanced additive system to provide optimum engine performance in modern diesel and gasoline engines as well as older models. The key benefits include:

FeaturesAdvantages and Potential Benefits
High thermal and oxidation stabilityReduced sludge build-up, deposits and viscosity increases
TBN reservesDeposit control and acid neutralisation
Stay-in-grade shear stabilityWear protection and viscosity control
Advanced detergency/dispersancyCleaner engines and longer component life
Improved soot handlingImproved viscosity control and used oil pumpability
Excellent low temperature propertiesStart-up wear protection
Component compatibility
Meets demanding specifications of key OEMs
Longer gasket and seal life
One engine oil for mixed fleet operations



      Recommended by ExxonMobil for use in:


Specifications and Approvals

Mobil Delvac MX 15W-40 meets or exceeds the requirements of the following industry and builder specifications:15W-40
Caterpillar CAT ECF-2X
Cummins CES 20078 / 20077 / 20076X
Renault Trucks RLDX


Mobil Delvac MX 15W-40 has the following builder approvals: 
MB-Approval 228.3X
Volvo VDS-2/VDS-3X
MAN M3275-1X
MTU Type 1 (Open crankcase only – up to 500 hr ODI)X


Mobil Delvac MX 15W-40 is recommended by ExxonMobil for use in applications requiring: 
Allison C-4X
Mack EO-MX
Cummins CES 20072 / 20071X
Detroit Diesel 7SE 270 (4-Stroke Cycle)X
ACEA B4, B3, A2X


Typical Properties

Mobil Delvac MX 15W-40 
SAE Grade15W-40
Viscosity, ASTM D 445 
cSt @ 40ºC105
cSt @ 100ºC14.2
Viscosity Index, ASTM D 2270138
Sulfated Ash, wt%, ASTM D 8741.1
Total Base # , mg KOH/g, ASTM D 289610
Pour Point, ºC, ASTM D 97-33
Flash Point, ºC, ASTM D 92215
Density @ 15ºC kg/l, ASTM D 40520.88


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 contact 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 ExxonMobil Corporation, or one of its subsidiaries. 


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