Mobilgard™ M30 Series
Diesel Engine Oils
Product Description
Mobilgard™ M30 Series (M330 ａnd M430) by ExxonMobil are premium, extra high performance 30 TBN engine oils designed for use in the most severe residual-fuelled medium-speed diesel applications found in marine ａnd stationary power industries. These outstanding trunk piston engine oils are formulated utilizing high performance additive detergent technology ａnd provide outstanding residual fuel compatibility characteristics for excellent engine cleanliness, especially in crankcase, camshaft areas, ring belt ａnd piston undercrowns. They also demonstrate excellent high temperature oxidation ａnd thermal stability, low volatility, ａnd high load carrying properties ａnd corrosion protection.
Features ａnd Benefits
Mobilgard M30 Series oils have high performance 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 excellent 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 |
Applications
Mobilgard M40 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 DAC (Detecting Aspahltene Contamination) 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 excellent 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 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 http://www.exxonmobil.com. 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.
11-2012
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