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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.
Mobilgard™ 12 Series offers 2 lubricant grades
Mobilgard™ 312
Mobilgard™ 412
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
Specifications and Approvals
According to ExxonMobil, Mobilgard™ 12 Series is of the following quality level:
API CF
412
X
312
X
312
412
Mobilgard™ 12 Series has the following approvals:
Caterpillar / MaK 4-Stroke Medium Speed Diesel Engine (Distillate Operation)
Everllence (formerly MAN Energy Solutions) 4 Stroke medium speed engines for Alternating Distillate / LNG operation
Everllence (formerly MAN Energy Solutions) 4 Stroke medium speed engines for Distillate operation
Wartsila 4-Stroke Medium Speed Engines for Distillate- and Dual-Fuel operations
X
X
X
X
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
312
412
Mobilgard™ 12 Series Property:
Grade
Ash, Sulfated, wt%, ASTM D874
Flash Point, Cleveland Open Cup, °C, ASTM D92
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445
Pour Point, °C, ASTM D97
Specific Gravity, 15.6 C/15.6 C, ASTM D4052
Total Base Number, mgKOH/g, ASTM D2896
Viscosity Index, ASTM D2270
SAE 40
2.1
272
14.5
142
-9
0.899
15
100
SAE 30
2.1
266
12
108
-9
0.896
15
100
EMA LUBRICANTS CO. LTD.
T: +971 650 626 00
P.O. Box 22316, Sharjah, UAE.