Mobilgard 12 Series

Diesel Engine Oils

Mobilgard™ 12 Series by ExxonMobil are high performance diesel engine oils developed for use in trunk piston engines operating on low sulphur distillate fuels in marine and industrial applications. They are formulated to have excellent resistance to oxidation and viscosity increase over a long period of service. They have superior water separating properties and provide excellent corrosion protection.

 

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Features and Benefits

Mobilgard 12 Series is formulated with base oils having proven successful performance in diesel engines. The additive system is balanced to provide excellent resistance to thermal degradation under moderately severe operating conditions. They also provide good engine cleanliness and superior wear protection.

When used as recommended, Mobilgard 12 Series oils provide the following features and potential benefits:

 

Features

Advantages and Potential Benefits

Excellent thermal and oxidation stability

Extended periods between inspections, overhaul and cleaning

Improved antiwear properties

Reduced ring and liner wear

Excellent TBN reserve and retention

Increased protection against corrosive wear

Excellent detergency/dispersancy properties

Increased oil service life

Cleaner engines

 

Applications

The Mobilgard 12 Series diesel engine oils are intended for use as cylinder and bearing lubricants in marine and industrial diesel engines operating on distillate fuels or light fuel blends. They are particularly effective in high speed engines in fishing fleets; in new, severe service engines; and in many types of medium speed engines. They may be used as crankcase lubricants in large crosshead type diesel engines operating on high sulphur fuels.

 

Properties and Specifications

Property

312

412

Grade

SAE 30

SAE 40

Ash, Sulfated, wt%, ASTM D874

2.1

2.1

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

266

272

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

12

14.5

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

108

142

Pour Point, °C, ASTM D97

-9

-9

Specific Gravity, 15.6 C/15.6 C, ASTM D4052

0.896

0.899

Total Base Number, mgKOH/g, ASTM D2896

15

15

Viscosity Index, ASTM D2270

100

100

 

Health and Safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @ http://www.msds.exxonmobil.com/psims/psims.aspx

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