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How to Filter Diesel Fuel Effectively_ A Complete Guide to Diesel Filtration Systems_
How to Filter Diesel Fuel Effectively_ A Complete Guide to Diesel Filtration Systems_

Starting from powering ships to trucks, heavy machines, and generators, there is no question about how these engines bring a significant impact on society. But, do you know what could be their biggest challenge? Working through the dirty oil. Yes, one of the essential yet hidden challenges is the dirty fuel inside these machines, which technically provides the power needed for the engines to work adequately. Because even the tiniest bit of dirt and debris can contaminate the fuel, forcing it to lose its potential, causing frequent breakdowns. This is where the fuel filtration comes in.

In this guide, we will walk you through the steps of fuel filtration with Njord Filtration systems and everything else you must be aware of when it comes to filtering the diesel fuel effectively. 

Understanding more about the diesel contamination

Now, first of all, let's define what we mean by diesel contamination. Simply put, it means that when other sources pollute clean fuel. Amongst which are:

  • Water
    There's no question that diesel tanks develop condensation. However, this condensation generates a significant amount of water, which promotes microbial growth and corrosion within the system, ultimately degrading the fuel and compromising its integrity.


  • Microbes
    Microbes or Diesel Bug is a mix of bacteria and fungi that thrive in the interface between water and diesel fuel. They produce sludge and acids that damage fuel systems, weakening the system's power.

(Also recommend reading: How to Use Fuel Conditioner to Prevent Microbial Growth in Tanks

  • Dirt and Dust
    Dirt and dust, or simply the tiny particles from storage tanks or transfer equipment, can get into the fuel and contaminate it.


  • Oxidation and Sludge

    Over time, if the fuel is not filtered, the diesel will degrade, forming sticky deposits that clog filters and lines. This can degrade the fuel to its worst state.

Identify Your Filtration Needs

Now, you need to know what your diesel engine needs. So, start by asking yourself a few basic but important questions, and let the following explain:

  1. What equipment are you using?

    The answer is the machine you are using, whether it's trucks, marine vessels, standby generators, or other heavy machinery.

  2. How much diesel do you consume?

    Now, depending on the quality, you can decide. For example, if you consume diesel in large quantities, you will need a heavy fuel filtration system.

  3. Where do you store the fuel?

    This is an important question, considering that the way you store your fuel plays a significant role in maintaining the quality of the fuel. So, check if you store it in on-site tanks, mobile containers, or marine vessels.
  4. Is the climate extreme?

    Just like storage, environmental factors also play a significant role in determining the quality of the fuel. So, if you are in a cold climate, you will need a fuel filtration system with wax-management systems.

  5. How critical is the uptime?

    In large industries such as the healthcare sector, mining zones, and shipping points, clean fuel is essential for efficient operation, with no room for negotiation.

All these will help you set up a diesel filtration system that can be basic, automated, and advanced.

Selecting the right diesel filtration system

Choosing the right fuel filtration system is essential! Always look for these features when you're about to invest in a filtration system:

  1. Multi-stage filtration that removes water and other solid particles.

  2. If you have modern engines, check the micron rating; the smaller the number, the finer the filter, suitable for advanced machines with micron ratings below 10 microns.

  3. Corrosion-resistant and suitable for all industrial applications.

  4. Quick filter replacement, so you save time and reduce downtime.

  5. The system can handle your fuel demand, whether less or more.

Some of the standard diesel filtration systems your system should have:

  • Primary fuel filters are installed between the engine and tank to catch larger dirt particles from the fuel.

  • Secondary filters that refine the filter diesel fuel and make it finer before the fuel goes to the injectors.

  • A diesel polishing system that continuously cleans the fuel so it can run longer.

Not sure where you made your first purchase of a fuel filter system? We, with thousands of industries, trust Njord Filtration for their super-advanced diesel fuel systems, perfect for every sector!

Bottom Line

Investing in a filter diesel fuel system can be expensive, but that is just for one time. When you do so, you need to study and learn more about the machines your industry uses. This will help you to effectively filter the diesel without worrying about offloading under any circumstances. For more expert advice, we suggest consulting Njord Filtration. 

You can get in touch with them here .