Mobil Delvac Legend 20W-50 Standard Defense

Multigrade Diesel Engine Oil.

Mobil Delvac Legend 20W-50 Standard Defense is Multigrade Synthetic Blend diesel engine oil that provides proven engine protection of diesel engines operating in severe service applications. Mobil Delvac Legend 20W-50 Standard Defense is recommended by ExxonMobil for use in a wide range of heavy-duty applications and operating environments found in the trucking, construction and agricultural industries.


Features and Benefits

The key benefits of Mobil Delvac Legend 20W-50 Standard Defense

- Enhanced protection for two and four cycle diesel engines in the most demanding on-and off-highway service

- Prolonged engine life

- Outstanding control of high temperature deposits

- Excellent soot control

- Reduced engine scuffing and bore polishing due to enhanced high temperature/high shear viscosity retention

- Improved low temperature sludge control in stop and- go service

- Easy starting in cold weather conditions

- Extended TBN quality reserve for long term wear and deposit control

- Reduced oil consumption due to improved high temperature performance



Advantages and Potential Benefits

Thermal and oxidation stability

Controls sludge and build-up of deposits

Excellent detergency & dispersancy

Cleaner engines and longer engine life

Stay-in-grade shear stability

Helps reduce oil consumption and wear



Mobil Delvac Legend 20w-50 Standard Defense is recommended by ExxonMobil for use in the most severe applications of modern on- and off-highway diesel engines. It extends engine life between overhauls in high speed/high load operations and in pickup/delivery operation modes in both two-cycle and four-cycle engines. Applications include:


- Diesel-powered equipment from leading diesel engine manufacturers

- On-highway light and heavy-duty trucking

- Off-highway industries including: trucking, construction, quarrying, and agriculture

- Mixed fleets


Specifications and Approvals


This product is recommended for use in applications requiring:





Properties and Specifications




SAE 20W-50

Ash, Sulfated, mass%, ASTM D874


Flash Point, Cleveland Open Cup, °C, ASTM D92


Pour Point, °C, ASTM D97


Density @ 15 C, kg/l, ASTM D4052


Kinematic Viscosity @ 100 C, mm2/s, ASTM D445


Viscosity Index, ASTM D2270


Total Base Number, mgKOH/g, ASTM D2896


Kinematic Viscosity @ 40 C, mm2/s, ASTM D445



Health and safety

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