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Mobilgard™ M50 diesel engine oil

Mobilgard™ M50 extra-high-performance, premium 50 TBN marine engine oil is designed for use in the most severe residual-fuelled, medium-speed diesel applications found in marine and stationary power industries.

Formulated using the latest additive detergent technology, Mobilgard M50 diesel engine oil provides the following benefits:

  • Reduced deposits in piston undercrown and ring belt areas
  • Extended life of critical wear surfaces
  • Clean camshaft and crankcase spaces
  • Protects wear surfaces from water and acidic corrosion
  • Reduced sludge formation, longer oil life, cleaner engines
  • Reduced lubricant consumption
  • Combats fuel and combustion related corrosion and deposits
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Features and Benefits
Mobilgard M50 has industry-leading 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 superior lube/fuel compatibility and separates easily from water.

When used as recommended, Mobilgard M50 diesel engine 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 M50 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 new oil is the result of an extensive research and development program, incorporating ExxonMobil's patented DAC (Detecting Aspahltene Contamination) Test. 

Mobilgard M50 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 is especially beneficial in engines having low crankcase oil consumption or operating with low cylinder liner temperatures. In these engines, oil life and drain intervals have been significantly reduced when using conventional lube oils due to severe TBN depletion resulting from very low lube oil consumption. Relatively high alkalinity reserves in this oil 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. 

Mobilgard M50 is also recommended for topping-up existing oil charges with a low TBN value to raise them to an acceptable value.
Typical Properties
SAE Grade
40
Specific Gravity at 15ºC 0.922
Flash Point, ºC, ASTM D 92 228
Pour Point, ºC, ASTM D 97 -6
Viscosity, ASTM D 445  
cSt, at 100ºC 14
TBN, mg KOH/g, ASTM D 2896 50
Sulphated Ash, wt%, ASTM D 874 6.5

 

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Industry Sectors
  • deep sea shipping industry
  • cruise and ferry
Product Features
  • Enhanced Wear Protection
  • Extended Life
  • Corrosion protection
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