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The data-supported diagnostic tool that's simple to install and use 

Continuous lube oil monitoring works non-stop to discover emerging lube oil and engine anomalies. Now, operators can improve risk mitigation with real-time diagnostic data to catch small problems before they become big ones and quickly initiate remedial action around the clock - also during high-risk cold starts.

The perfect complement to periodic lube oil analysis, continuous lube oil monitoring is easy to install in all four-stroke engines, new-builds as well as retrofits. 

Of all engine damage is
caused by lube oil
Of all engine anomalies can
be detected in lube oil

A future-proof investment in smarter maintenance

  • Decreases OPEX and unplanned downtime
  • Ideal for preventive, condition based, and predictive maintenance
  • Supports digital services and simplifies transition to further digitalization & decarbonization 
  • Coming soon for two-stroke engines 

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Monitor in real-time. Act before failures happen.


MAN Fluid Monitor for lube oil immediately detects any anomaly, occurring in the lube oil systems of your engines, turbomachinery, or auxiliaries. We protect your equipment by monitoring, on an ongoing basis, the degradation and the pollution of its lube oil in the way of improving its availability, safety, and performance.

MAN Fluid Monitor for lube oil is now available, and ready to start tracking your engine condition.

Watch the video to discover MAN Fluid Monitor for lube oil in action - it only takes two minutes.

Evergreen specifies MAN lube oil monitoring 

Evergreen Marine Corporation will install MAN's continuous lube oil monitoring solution on 20 new container ships. Currently under construction in South Korea by Samsung Heavy Industry, the 15,000 TEU-class vessels are scheduled for delivery in 2023-2024.

To be installed in each of the 20 ships' two auxiliary gensets, the order comprises 40 MAN lube oil monitoring systems in total.

About Evergreen

Evergreen Marine Corporation is a world leader in container shipping. The Taiwanese firm operates more than 200 containerships with a total capacity of nearly 1.6 million TEU across five continents.

Evergreen Marine is committed to lowering its carbon emissions. By 2030, its fleet carbon emission rate will be reduced by 50% compared to 2008. The aim is to reach carbon neutrality by 2050.

Evergreen chooses MAN Fluid Monitoring
Image - Cybersecurity Certification

Cyber Security Certification 

MAN Fluid Monitor has obtained the certification entitled “Bureau Veritas Rules for the Classification of Steel Ships and Naval Ships. IACS UR E27 Rev.1 Sep 2023 Cyber resilience of on-board systems and equipment”.

Meeting the IACS (International Association of Classification Societies) UR E27 standard, this certification requires the cyber resilience of all systems and equipment on board ships, which must be able to protect interfaces with other systems in case of a cyber-attack. In other words, the supplied system must be able to communicate with others, without controlling them.

Last detection cases


MAN Fluid Monitor Maintenance

Engine type: S.E.M.T. Pielstick PC 2-5


Intervention type: maintenance


Detection: water


Reference 1: “Some time ago, during the maintenance work of a PC2-5, MFM started an alarm: thanks to it we detected that water was falling into the lube oil sump because of a leakage in way of an exhaust valve seat. If we had not known about it, the consequences would have been very serious for the engine and also costly because we would have had to change all the engine lube oil. Since then, I use MFM for all my projects:  it is a real advantage to guarantee the quality of our work and point it out to our customers.”Frédéric Albessart, Field Service Engineer, MAN PrimeServ


Reference 2: “We took the opportunity of maintenance works on 16PC2-5 emergency engines to install a MFM. We had two objectives in mind: prevent possible damage occurrences and show to our customer how useful this tool is. The facts proves very quickly how right we were: as soon as it was started MFM detected at the end of the running-in phase an increase of the water contents in the lube oil. The cost of this incident was very low compared to the serious damage we then prevented. Proposal for an MFM will be made for the preparation of the second maintenance.” Emma Lechat, Project Manager, MAN PrimeServ

Major overhaul

MAN Fluid Monitor Major overhaul

Engine type: MAN 48/60B

Intervention type: major overhaul

Detection: water

Reference: “During an overhaul, our 48/60B engine being in running-in phase for about 5 hours and as all the operating parameters were good, MAN Fluid Monitor detected a sudden increase of the water content in the lube oil. We stopped the engine immediately to carry out an internal inspection – a cylinder head was leaking. Without MFM, the water ingress would have been detected too late to prevent the renewal of all the engine lube oil (approx. 20 m3).” Jean-Saül Séry, Field Service Engineer, MAN PrimeServ


MAN Fluid Monitor Commissioning

Engine type: MAN 32/44 CR

Intervention type: commissioning

Detection: water

Reference: “After some damage occurred – engine flooded at the end of the commissioning phase – I used a MAN Fluid Monitor to restart the engine after draining, flushing and changing the lube oil. This proved that our work had been efficient, i.e. a real saving in terms of time and troubleshooting! The customer, who had received the MFM just before the damage occurred, was reassured about his choice, sped up its fixed installation and decided to equip each of his four 32/44 CR (GenSet) engines as well in order to monitor them for correct functioning in the long term.” Dylan Lefeuvre, Field Service Engineer, MAN PrimeServ


MAN Fluid Monitor_testbed

Engine type: MAN 51/60G

Intervention type: testbed

Detection: ferrous particles

Reference: “At the test bench, during the tests of a 51/60G new engine, the MFM started an alarm: detection of ferrous particles. It was decided to inspect the cylinders: the boroscopic inspection of the first cylinder liner detected severe scuffing. Fortunately, thanks to this early detection, only one liner was damaged. Without this detection the tests would not have stopped; resulting in possible seizing of this cylinder, and maybe a crankcase explosion. The tests were resumed with different liner/piston ring/piston configurations to find out the cause, always under MFM monitoring, which has now become systematic” Mickael Limousin, Test Engineer, MAN PrimeServ

Learn how lube oil monitoring prevented engine failure for La Méridionale

Just a few weeks after installation, MAN lube oil monitoring notified crew of water leakage that would have resulted in major damage if not discovered and fixed fast.

CustomerLa Méridionale
Customer typeFrench shipping company, freight
LocationMarseille, France
Power systemMAN 4X9L48/60
Commercial application2019 - today

Read more

Integration of MAN Fluid Monitor for lube oil

Depending on the on-site configuration, the system can be installed with no requirement to shut down the engine or equipment.

Plug & Play, the automatic calibration means the system can be started within a few hours.

Reading the indicators is easy. The touchscreen provides intuitive navigation between the display screens.


Condition monitoring

In this ExpertTalk, we explore the engine condition monitoring through the MAN Fluid Monitor for lube oil.

Download the white paper

How lube oil

condition monitoring enables

smarter maintenance.


Download the white paper

Continue reading

  • MAN Fluid Monitor for lube oil (EN)
    pdf, 11664 KB

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