Mobilgard M 330

Nhớt Động Cơ Mobilgard M30 Series
Diesel Engine Oils

Product Description
Mobilgad M30 Series (M330 and M430) by ExxonMobil are premium, extra high performance 30 TBN engine
oils designed for use in the most severe residual-fueled, medium-speed diesel engines used in marine and
stationary power applications. These diesel engine oils have been specially formulated to provide
outstanding residual fuel compatibility characteristics to deliver excellent engine cleanliness, especially in crankcase, camshaft areas, ring belt and piston undercrowns. They provide excellent high temperature oxidation and thermal stability, low volatility, high load-carrying properties and corrosion protection.

Features and Benefits
Mobilgard M30 Series oils have industry-leading thermal and oxidation stability. They have excellent
TBN retention and resistance to viscosity increases over long operating periods. They also promote a
high level of engine cleanliness with protection against wear. Compared to other medium speed engine oils,
they have superior lube/fuel compatibility and separate easily from water.

When used as recommended, Mobilgard M30 Series oils provide the following benefits:
                Features                                                                Advantages and Potential Benefits
Excellent thermal and oxidation stability                     Reduced deposits in piston undercrown and ring belt areas
Improved anti-wear properties                                   Extends the life of critical wear surfaces
Advanced detergency/dispersancy                            Clean camshaft and crankcase spaces
Outstanding rust and corrosion properties                 Protects wear surfaces from water and acidic corrosion
High Residual Fuel Compatibility                                 Reduced sludge formation, longer oil life, cleaner engines
Low volatility base stocks                                          Reduced lubricant consumption
Excellent TBN Reserve and Retention                        Combats fuel/combustion related corrosion and deposits

Mobilgard M30 Series oils can be used in most medium-speed trunk piston engine applications. They are
recommended for use in main propulsion and auxiliary engines on deep-sea vessels; in main propulsion
engines on coastal and river ships; and in stationary power plants. This new Series of oils is the result of
an extensive research and development program, incorporating ExxonMobil’s patented RFD
(Residual Fuel Detection) Test.

Mobilgard M30 Series oils are designed to meet the needs of engines operating on heavy fuel.
They are recommended for use in the latest model medium speed diesel engines and are
especially beneficial in engines having low crankcase oil consumption or operating with low
cylinder liner temperatures. Relatively high alkalinity reserves in these oils provide superior
protection in neutralising the strong acids resulting from the use of high sulphur fuels that find
access to the crankcase to promote oil degradation and ring, cylinder, and bearing corrosion.

Typical Properties
                                                                          M330             M430
SAE Grade                                                             30                  40
Specific Gravity at 15ºC                                      0.907              0.907
Flash Point, ºC, ASTM D 92                                   244                250
Pour Point, ºC, ASTM D 97                                    -6                   -6
Viscosity, ASTM D 445
cSt, at 40ºC                                                         112                143
cSt, at 100ºC                                                       12.0               14.0
TBN, mg KOH/g, ASTM D 2896                              30                  30
Sulphated Ash, wt%, ASTM D 874                         3.8                 3.8

Health and Safety
Based on available information, this product is not expected to produce adverse effects on health
when used for the intended application, following the recommendations provided in the Material
Safety Data Sheet (MSDS). MSDSs are available upon request through your sales contract office,
or via the Internet on This product should not be used for
purposes other than its intended use. If disposing of used product, take care to protect
the environment.

The ExxonMobil logo and Mobilgard are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.

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