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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.
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
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.
Property
312
412
Grade
SAE 30
SAE 40
Ash, Sulfated, wt%, ASTM D874
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
Specific Gravity, 15.6 C/15.6 C, ASTM D4052
0.896
0.899
Total Base Number, mgKOH/g, ASTM D2896
15
Viscosity Index, ASTM D2270
100
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