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Mobilgard™ 5100 cylinder oil

Enhances the performance of two-stroke marine diesel engines operating on heavy fuel oil and helps prevent corrosion.

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Product information

   Mobilgard™ 570 performance profile 1.145 MB/pdf
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Technical resources

Storage and handling: Best practices and guidelines for marine lubricants

Learn more about best practices for handling, storing and dispending ExxonMobil marine lubricants.

Marine engine cold corrosion

Learn about cold corrosion and how ExxonMobil marine lubricants can help protect your engine from cold corrosion and liner wear.

Mobilgard™ 5100 cylinder oil and Mobil Serv℠ Cylinder Condition Monitoring ended cold corrosion

APL switched to Mobilgard 5100 cylinder oil and benefited from reduced cold corrosion and an 18.5% reduction of cylinder oil consumption.

Mobilgard™ 5100 use reduces cold corrosion impact and oil consumption

The container vessel JPO Tucana switched cylinder oils and reduced feed rates by 45 per cent.

  • Container ship with cargo on open water

    Cylinder oil benefit calculator

    Find out how you could benefit from changing your vessel cylinder oil by using ExxonMobil's cylinder oil benefit calculator.

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Features and Benefits

  • Excellent thermal and oxidation stability can lead to reduced deposits and sludge formation. Cleaner engines can lead to reduced component wear rates.
  • Exceptional anti-wear properties lead to potentially reduced liner and ring wear and excellent anti-scuffing control.
  • Outstanding detergency capability leads to potentially cleaner pistons and liners and can help extend periods between overhauls.


  • Marine crosshead engines

Specifications and Approvals

Meets OEM requirements
MAN Diesel and Turbo X
*Please follow all OEM guidelines for feed rate and fuel sulfur use

Typical Properties

SAE Grade
Specific Gravity at 15ºC 0.937
Flash Point, ºC, ASTM D 92 256
Pour Point, ºC, ASTM D 97 -9
Viscosity, ASTM D 445

cSt, at 40 ºC 222
cSt, at 100 ºC 20
Viscosity Index, ASTM D 2270 104
TBN, mg KOH/g, ASTM D 2896 100
  • Deep Sea Shipping Industry
  • Inland and Coastal
  • Enhanced Wear Protection
  • Faith containership ship in harbor

    Lubricants port directory

    Use the lubricants ports and services directory to view our offer.

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  • Front aerial view on container ship in the water

    Mobilgard™ 300 C system oil

    Next-generation system oil specially engineered to help improve cleanliness in two-stroke crosshead diesel engines.

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