Mobilgard™ M440  

ExxonMobil Marine, United Kingdom

Diesel Engine Oils

Product Description

Developed specifically for medium-speed engines

Mobilgard™ M440 is a high performance 40 BN engine oil recommended for use on deep-sea vessels, coastal and river ships operating on heavy fuel oil (HFO).

This product provides:

  • Excellent high temperature oxidation

  • Outstanding residual fuel compatibility

  • Good thermal stability

  • Low volatility

  • High load carrying properties

  • Outstanding corrosion protection.

 

Corrosion protection

Mobilgard M440's gh alkalinity reserves provide superior protection in neutralising the strong acids resulting from the use of high sulphur fuels, reducing corrosion and in turn maintenance and repair costs.

Unsurpassed engine cleanliness and protection

Mobilgard M440 oil offers excellent BN retention and resistance to viscosity increase, helping to maximise component life and cleaning intervals as well as minimise filter changes and purifier maintenance. It also:

  • Helps protect piston under-crowns from deposits caused by raw fuel dilution

  • Optimises the life of critical wear surfaces through outstanding anti-wear properties

  • Minimises oil consumption thanks to low volatility base stocks

 

Features and Benefits

Mobilgard M440 oil has outstanding thermal and oxidation stability. It has excellent TBN retention and resistance to viscosity increases over long operating periods. It also promotes a high level of engine cleanliness with protection against wear. Compared to other medium speed engine oils, it has excellent lube/fuel compatibility and separates easily from water.

When used as recommended, Mobilgard M440 oil provides 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 M440 oil can be used in most medium-speed trunk piston engine applications. It is 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 oil is the result of an extensive research and development program, incorporating ExxonMobil's patented DAC (Detecting Asphaltene Contamination) Test.

 

Mobilgard M440 oil is designed to meet the needs of engines operating on heavy fuel. It is 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 this oil provides 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.

 

Properties and Specifications

Property

Grade

SAE 40

Flash Point, Cleveland Open Cup, °C, ASTM D92

242

Kinematic Viscosity @ 100 C, mm2/s, ASTM D445

14

Pour Point, °C, ASTM D97

-6

Specific Gravity, 15 C/15 C, ASTM D4052

0.915

Sulfated Ash, wt %, CALCULATED

5

Total Base Number, mgKOH/g, ASTM D2896

40

 

Health and safety

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

All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries unless indicated otherwise.

08-2019

ExxonMobil Marine Limited
Ermyn Way
Leatherhead, Surrey
United Kingdom KT22 8UX

http://www.exxonmobil.com

Due to continual product research and development, the information contained herein is subject to change without notification.  Typical Properties may vary slightly.

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