Fuel Polishing Services

Network Environmental has been providing a comprehensive set of fuel and oil-related services for more than a decade. We have housed a highly experienced and expert team of professionals who have rendered us capable of taking any job with confidence. Our team commits to every project and takes it to the finish line.

Our team works with genuine passion and approaches every project in a professional manner. They work closely with every client while ensuring the highest work quality and aim to leave them satisfied at the end of the project.

Fuel Polishing Services
Fuel Polishing Services

What is Fuel Polishing?

Being an organic compound, diesel starts to deteriorate and gets contaminated if left for a long time. This contamination negatively impacts the efficiency of the diesel. It may also harm the machinery and cause system failures.

Fuel polishing is the process of cleaning contaminated diesel fuel from the storage tank. In this process, a pump is used to draw fuel from the tank, and after passing it through different filters, it is sent back to the tank. This process can remove all sorts of contaminants, including water, sediments and bacteria.

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Fuel Polishing Services

Benefits of Diesel Fuel Cleaning Services

Cleaner, More Efficient Fuel: Fuel polishing removes water, sediment, and other contaminants from diesel fuel. This can improve the fuel’s combustion efficiency, leading to better fuel economy and reduced emissions.

Extended Engine Life: Contaminated fuel can damage engine components, such as injectors, pumps, and filters. Fuel polishing can help to prevent these problems, extending the life of your engine.

Reduced Maintenance Costs: Fuel polishing can help reduce the need for engine maintenance, such as filter changes and injector cleaning, saving you money in the long run.

Prevents Fuel Breakdown: Fuel contaminated with water or other contaminants can break down over time, leading to engine problems, such as stalling or misfires. Fuel polishing can help prevent this from happening.

Protects the Environment: Fuel polishing can help reduce emissions by improving the combustion efficiency of diesel fuel, benefitting the environment by reducing air pollution.

Fuel Polishing Contaminants

Fuel polishing can remove the following contaminants from the diesel:

  • Bacteria
  • Dirt
  • Emulsified Water
  • Gums
  • Mould
  • Organic films
  • Sap
  • Soot
  • Wax
  • Water
  • Yeast
  • Dissolved Water
  • Rust

How Does Fuel Polishing Work?

The process of fuel polishing can be divided into three different stages:

Free Water Separation

Free water refers to the foreign liquid that enters the fuel tank and settles down at the bottom; it does not dissolve with the fuel, making it relatively easy to separate, which is done using a centrifuge.

The fuel is spun at a very high RPM in a centrifuge, and the free water is separated from the fuel due to the difference in density and viscosity. This method can also separate large solid contaminants such as sludge and other large particles.


Diesel fuel polishing systems are designed to filter fuel effectively, typically before it reaches the coalescer stage. These systems employ specialised fuel filters that utilise a fine membrane capable of isolating particles such as dirt, grime, and other debris, reducing them to approximately 25 microns in size.

While these filters, along with centrifugal water separators, are effective at removing solid contaminants, they are unable to eliminate emulsified water or certain dissolved impurities from diesel fuel.


Coalescer is the final stage of fuel conditioning services. It consists of an electrical or mechanical advanced filter system which is capable of separating emulsified and dissolved water from the fuel efficiently. Coalescer differentiates materials on the basis of their molecular weight and separates them from the fuel.

Some coalescers also contain an extremely fine filter which can separate ultra-small contaminants that have escaped in the first two stages. 

Our Expertise

At Network environmental, we have years of experience providing fuel polishing services to businesses of all sizes and across a wide range of industries. Our team of experts is highly trained and knowledgeable, and we use the latest technology and equipment to ensure that your fuel is clean and reliable.

Our Commitment

At Network environmental, we are committed to providing the highest level of service and quality workmanship to our customers. We understand the importance of clean, reliable fuel, and we work hard to ensure that our customers’ needs are met with professionalism and expertise.

Fuel Polishing Services

Diesel Fuel Polishing Cost

Although the fuel polishing process involves complicated machinery and process, it is an extremely cost-effective solution. It saves you a lot of cost because you don’t have to waste the old fuel. It also saves a lot of effort because fuel polishing causes minimum disturbance to the place.

However, the cost of fuel polishing can vary depending on the location of the tank, accessibility and the project’s magnitude.

Why Choose Our Diesel Polishing Services?

With a staggering experience of more than a decade, Network Environmental UK has become one of the most trusted providers of oil and fuel services. Our team of experienced professionals provides fuel polishing on domestic, commercial and industrial levels. Trust our diesel fuel polishing services and hire our services to witness the highest standards of work.


Fuel polishing can be used to clean red diesel, white diesel, biodiesel, kerosene and heating oils. This technique is beneficial for generators, marine vessels and storage tanks.

There are no clear-cut rules about the frequency of fuel polishing. However, on average, it is better to get it polished at least once a year.

Yes, it is a safe procedure. But make sure it is carried out by certified professionals or service providers.

Network Environmental UK provides specialised fuel polishing services with state-of-the-art equipment and a certified and experienced team of professionals.

Whatever your situation, we can handle it

Our Services Ensure Regulatory Compliance

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Our service provider's , suppliers and contractors are accredited

Industry-Recognised Accreditations

We take pride in holding industry-recognised accreditations. These certifications demonstrate our commitment to quality and compliance, and provide our clients with peace of mind knowing that they are working with a reputable and trustworthy partner.