Mobil Delvac Modern™ 15W-40 Super Defense

modern 15w 40 super defense

Synthetic Technology Extra High Performance Diesel Engine Oil

Mobil Delvac Modern™ 15W-40 Super Defense is an extra high performance diesel engine oil that provides excellent lubrication of today's diesel engines promoting long engine life. As a result, this product meets or exceeds the specifications of major European and American engine manufacturers. It is recommended by ExxonMobil for use in a wide variety of industries, applications, and mixed fleets.

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 Modern 15W-40 Super Defense 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.

This product is fully compatible with Mobil Delvac MX 15w-40 and can be used as a replacement of same.

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 Modern 15W-40 Super Defense is formulated from high performance base oils and a balanced additive system to provide optimum engine performance in modern diesel and gasoline engines as well as older models. The key benefits include:
Features Advantages and Potential Benefits
High thermal and oxidation stability Reduced sludge build-up, deposits and viscosity increase
TBN reserves Deposit control and acid neutralisation
Stay-in-grade shear stability Wear protection and viscosity control
High detergency/dispersancy Clean engines and long component life
Improved soot handling Improved viscosity control and used oil pumpability
Excellent low temperature properties Start-up wear protection
Component compatibility Long gasket and seal life
Meets demanding specifications of key OEMs One 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

This product has the following approvals:
Mack EO-M Plus
Mack EO-N
MB-Approval 228.3
MB 228.3
This product is recommended for use in applications requiring:
Cummins CES 20071
Cummins CES 20072
This product meets or exceeds the requirements of:
JASO DH-1-17
Cummins CES 20076
Cummins CES 20077
Cummins CES 20078

Properties and Specifications

Grade SAE 15W-40
Ash, Sulfated, mass%, ASTM D874 1.3
Flash Point, Cleveland Open Cup, °C, ASTM D92 223
Pour Point, °C, ASTM D97 -33
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 109
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 14.3
Total Base Number, mgKOH/g, ASTM D2896 11
Density @ 15 C, kg/m3, ASTM D4052 0.87
Viscosity Index, ASTM D2270 133

Health and safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @
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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
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