Diesel Engine oils Mobilgard 412

Product Description
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 312 and 412 meet API requirements for CF rating.
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
Extended periods between inspections, overhaul and
cleaning
Excellent thermal and oxidation stability
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 lifeCleaner 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
small bore, 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. Mobilgard 512 is recommended occasionally by some builders as running-in oil for crosshead
type engines.
Typical Properties
312 412 512
SAE Grade 30 40 50
Specific Gravity at 15?C 0.896 0.899 0.903
Flash Point, ?C, ASTM D 92 266 272 282
Pour Point, ?C, ASTM D 97 -9 -9 -9
Viscosity, ASTM D 445
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