MAN engines are trusted worldwide for their engineering quality, long-lasting durability, and impressive fuel economy. They are used in vessels, power generation, and heavy-duty vehicles across multiple sectors, where dependable performance is essential. To ensure these engines continue running efficiently and to extend their working life, effective oil filtration is critical. One of the most reliable methods available is centrifugal oil filtration, which provides strong protection against wear and helps maintain the smooth, consistent operation of MAN engines. This article explores why this filtration technology plays such a vital role in keeping them at peak performance.
Why Centrifugal Oil Filters are Crucial for MAN Engines
1. Greater Filtration Capabilities
MAN engines are built for high performance and longevity, but microscopic contaminants in engine oil can still cause premature wear if left unchecked. Centrifugal filters use powerful centrifugal force to capture these ultra-fine particles that often pass through standard full-flow filters. Over time, these contaminants can damage critical MAN engine components. By removing them more effectively, centrifugal filters reduce degradation and help preserve your MAN engine’s performance for the long haul.
2. Extend Oil Change Intervals
One of the key operational benefits for MAN engine owners is the ability to extend oil change intervals. Because centrifugal filters excel at removing even the smallest particles, engine oil stays cleaner for longer periods. This means fewer oil changes are needed, which significantly reduces downtime for commercial fleets, marine vessels, or industrial equipment powered by MAN engines. Extending intervals not only saves time and money but also enhances operational efficiency across your MAN-powered assets.
3. Reduce Engine Wear
In a MAN engine, the accumulation of contaminants increases friction between high-precision moving parts, which accelerates wear. By removing harmful particles more effectively than conventional filters, centrifugal filtration allows your MAN engine to operate smoothly and with less strain. This reduction in internal wear helps maintain peak performance, lowers the likelihood of unexpected breakdowns, and extends the operational lifespan of the engine - protecting your investment in the long term.
4. Lower Maintenance Costs
Repairing or replacing parts in a MAN engine once they’ve worn out or failed can quickly become an expensive exercise. The more cost-effective approach is to stop the damage before it occurs by using efficient oil filtration. Centrifugal filtration systems continuously remove contaminants from the oil, protecting vital engine components and reducing the likelihood of breakdowns. This not only cuts down on routine servicing needs but also enhances engine reliability—an important benefit for MAN engines operating in demanding, high-pressure conditions.

5. Environmental Benefits
For operators of MAN engines, particularly in marine and industrial settings, environmental compliance is increasingly important. Centrifugal oil filtration extends oil life and reduces the frequency of oil changes, which lowers the amount of waste oil generated. This helps businesses meet stricter environmental regulations while improving their sustainability credentials. By installing a centrifugal filter, you are not only protecting your MAN engine but also making a measurable contribution to reducing your environmental footprint.
The IOW Group Difference
Not all centrifugal filters are created equal. Many designs have changed little in over half a century and simply cannot meet the demands of modern MAN engines. IOW Group’s latest centrifugal filtration technology increases separation efficiency by 150%, enabling it to remove up to twice as much contamination as standard centrifugal filters. The result is longer oil life, extended oil change intervals, and significantly improved engine longevity - often tripling the service life of MAN engines.
IOW Group Installations on MAN Engines
List of Services
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Case Study: MV ELMA, MAN B&W 9L32/40List Item 1
A client recently partnered with IOW Group to upgrade their lubrication system by replacing an old FM600 (part number - 6899118901) centrifugal separator with the superior IOW MP600 on a MAN B&W 9L32/40 engine. Thanks to IOW Group’s innovative bolt-off, bolt-on design, the retrofit was easy and efficient as a direct replacement, minimizing downtime and installation complexity
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Case Study: MV SHIMIN, MAN 8L 27/38List Item 2
A client upgraded an old FM600 (part number - 6899118901) centrifuge to the IOW MP600 centrifuge and observed a remarkable difference in performance. IOW Group’s range of centrifugal filters outperform any other centrifuge of its size on the market. This is the result of cutting-edge technology, featuring bowl discs and distributor impeller, along with the capacity to achieve higher RPM for enhanced separation.
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Case Study: MAN B&W 6L28/32HPList Item 3
A client undertook a trial period with our IOW MP400 (part number - 6899138801) Centrifuge, which was installed as a retrofit on a MAN B&W 6L28/32HP engine. The objective was to assess the performance differences and determine whether IOW Group's separation capabilities could enhance engine reliability and performance. Prior to the installation of IOW Group's MP400, the engine had been in operation for over 67,000 hours, rendering it highly susceptible to wear and degradation.
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Installation Bulletin: MAN 6L23/30HList Item 4
We were excited to show off the superior performance of the IOW centrifuge range onboard the tanker Maersk Kara. Looking to upgrade from their old centrifugal technology (part number - 6899119701) to improve the lube oil cleanliness, the best model for the job was the IOW MP200 oil centrifuge, and the results did not disappoint! The vessel had an MAN 6L23/30H engine fuelled by distillate and HFO (Heavy Fuel Oil) running at 4 bar pressure (58 PSI). The MAN 6L23/30H engine had an oil capacity of 400-500 liters (88- 110 Gallons), and Maersk was using TARO 30 DP 30 lube oil at 58°C (136°F). The oil was changed based on oil analysis results and the contaminant levels found in the lube oil.
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Installation Bulletin: MAN B&W 9L21/31
CMA CGM has been working with us to improve the cleanliness and efficiency of their lubrication systems onboard some of their vessels. The container vessel (ANL Wyong) had the original engine-supplied centrifugal bypass filters fitted and wanted to upgrade its bypass oil centrifuges. Filters and applications that come fitted as standard when purchasing engines are not the best at protecting your engine. Opting to replace the standard OEM-supplied centrifugal bypass filter with a superior product can have a massive impact on the overall health of your machine.
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Installation Bulletin: MAN 6L 21/31
The client installed an IOW MP600 centrifugal filter on their MAN 6L21/31 marine auxiliary engine aboard an LPG tanker, directly replacing the older FM600 (part number - 6899118901) unit. IOW Group’s innovative design allows for a seamless upgrade to the latest centrifugal technology, using a simple bolt-on, bolt-off system. IOW Group also provide remote monitoring as standard so engineers can observe the performance of their centrifuge, as well as be notified when a service is required.
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Installation Bulletin: MV Shina MAN 6L 27/38
Our client undertook a free trial of an IOW Group MP600 centrifugal filter, directly replacing an old FM600 (part number - 6899118901) to see if IOW Group’s technology can remove more harmful particulate from the engines lubrication oil. The MP600 operated at 5 bar and had an SCU 0003 installed to monitor the performance of the IOW Group centrifuge.
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Installation Bulletin: MAN 6L 28/32H
A client aimed to assess whether the quality of their lube oil could be enhanced by trialling an IOW Group centrifugal filter. As part of the trial, an IOW MP400 unit was retrofitted to their MAN B&W 6L28/32H engine which had been in operation for a long time without a centrifugal filter. An SCU-0002 remote monitoring system was also fitted. This setup allows engineers to monitor the centrifuge’s performance in real time and receive automatic alerts when maintenance is due
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Installation Bulletin MAN 7L 23/30
The client installed three IOW Group MP200 centrifugal filters—one on each of their diesel generators— along with SCU-0002 monitoring systems. This enables engineers to track the performance of each centrifuge in real time and receive alerts when servicing is required.
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Installation Bulletin: Shimin MAN 8L 27/38MV
Our client undertook a free trial of an IOW Group MP600 centrifugal filter, directly replacing an old FM600 (part number - 6899118901) to see if IOW Group’s technology can remove more harmful particulate from the engines lubrication oil. The MP600 operated at 5 bar and had an SCU 0003 installed to monitor the performance of the IOW Group centrifuge.
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Installation Bulletin: MAN 8L
IOW Group MP400’s were installed onto a twin skid with a Mechline 032N2 pump, 2.53kW at 60Hz, 3410 RPM as well as a Pressurized Drain System (PDS). The oil sump capacity is 10,000 litres. Oil travels from the sump tank and the outlet is connected to the Engine crank case which drains back into the sump tank. All connections were made with flexible hoses and 2 twin skid system’s were installed for each vessel.
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Installation Bulletin: MAN 9L21/31
A shipping company sought to improve cost efficiency on their container ship ANL WANGARATTA. They agreed to trial an upgrade from the existing on-engine MANN+HUMMEL (part number - 6899118901) oil centrifuge to a stateof-the-art IOW Group MP600, aiming to reduce the life cycle costs of their auxiliary engines. With a lubricating oil capacity of 1,100 litres, the MP600 was selected and installed on A/E No. 2 using the existing centrifuge bracket on the MAN 9L21/31 engine.
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Installation Bulletin: MAN 12V25/30
The client aimed to compare the performance of IOW Group’s MP600 against their existing Spinner II 3600 (part number - 6899118901). For a fair trial, both centrifuges were installed side by side, using the same pump and piping. The MP600 is designed for easy, bolt-on, bolt-off installation, making it a straightforward replacement for older systems. IOW Group also provide remote monitoring as standard, so engineers can check the performance of the IOW MP600 and are notified when a service is required, something Spinner II 3600 do not offer.
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Installation Bulletin: MAN 12V23H
Two IOW Group MP600 centrifugal filters were retrofitted onto two B&W 12V23H engines, paired with a Magnaline 032 pump. These filters are engineered to capture microscopic particles that bypass primary full-flow filters, helping engines run more efficiently and reliably while reducing maintenance and costs. The Magnaline pump range provides leak-free, high-performance operation.
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Installation Bulletin: MAN B&W 8L27/38
The M/V Boka Atlantis Diving Support Vessel was originally fitted with a standard Mann+Hummel FM600 (part number - 6899118901) centrifugal oil filter on its MAN B&K engine. To enhance engine reliability, an IOW Group MP600 was installed for a trial comparison. Designed with matching inlet and thread fixing hole sizes, IOW’s centrifugal filters offer a straightforward replacement. Paired with an SCU-0002 monitor, engineers can track performance in real time and receive service alerts when needed.
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Installation Bulletin: MAN B&W 9L 21/31
The client installed an IOW MP600 to replace an outdated FM600 (part number - 6899118901) oil separator on Generator Engine No. 3 of the ANL Wyong container vessel. Upgrading to IOW Group’s latest centrifugal technology is quick and straightforward thanks to the bolt-off, bolt-on design. The MP600 also features integrated remote monitoring, allowing engineers to track performance in real time and receive service alerts when needed.
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Installation Bulletin: MAN B&W 9L32/40
The client replaced their HYMF-600 Oil Conditioning System with an IOW MP600 Oil Conditioning Centrifuge. Designed for easy bolt-on, bolt-off installation, IOW Group’s filters offer a hassle-free upgrade from older systems. The MP600 also includes remote monitoring as standard, providing engineers with automatic service alerts to eliminate guesswork and reduce unnecessary downtime.
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Installation Bulletin: MAN B&W L28/32
A client installed MP600 with SCU0002 onboard factory trawler. Remote monitoring units are provided as standard with IOW Centrifugal filters for monitoring performance in real-time.
