Mobilgard M40 Series diesel engine oils

Mobilgard™ M40 Series extra-high-performance, premium 40 TBN engine oils (Mobilgard™ M340 and Mobilgard™ M440) are designed for use in the most severe, residual-fueled, medium-speed diesel applications found in marine and stationary power industries.

Formulated using the latest additive detergent technology, Mobilgard M40 Series oils provide the following benefits:

  • Reduced deposits in piston undercrown and ring belt areas
  • Extends the 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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Product Information

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.

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