What is Fuel Polishing?

What is fuel polishing

In it’s most basic explanation fuel polishing is the process of passing fuel through a filter system until it is fit for use your equipment. Of course the level of cleanliness that should be reached is subjective however there is now an agreed industry standard. The standard is based on an ISO test labelled ISO 4406 and the desired cleanliness code is 18/16/13, read more about this here.  Any high quality polishing plant will incorporate the following specifications of certified & tested filter efficiencies:

  • Remove ALL free standing water – SAE J1839
  • Remove ALL emulsified water – SAE J1488
  • Remove solid debris to a level of 10 microns or lower.
  • ISO 4406:1999 Code 18/16/13 or better.

Your fuel is likely to be contaminated with water when it is delivered.

With the introduction of bio diesel things are not as straight forward as they used to be. In the past water in diesel would over time fall to the bottom of the tank out of harm’s way. However at the start of 2011 the EU introduced a 7% bio diesel mix into ALL diesels. Unlike 100% diesel, bio diesel holds onto water droplets and hence keeps them in suspension throughout the tank. Large particles of water will become too heavy for suspension and fall to the bottom.

Condensation

Naturally occurring condensation is prevalent in warmer climates where the days are hot and the night’s cold. In the UK this problem occurs from Spring to Autumn.

Our fuel polishers are based around a technology called coalescence.

In short this means that we actively remove emulsified water from oil fuels. The reason that this is a critical component in any good fuel polisher is that modern diesel contains a 7-10% blend of bio oil. Bio oil products naturally hold onto water as tiny droplets and keep them in suspension in the oil. So there are minute quantities of water in all the oil and more importantly to understand this water does not drop to the bottom of the tank in the same way as if you poured water into oil. Microbes attach themselves to the water and then feed on the diesel resulting in large outbreaks of microbial growths. These microbes are deadly and are the main cause of engine failures today.

It is therefore VITAL TO SEPARATE WATER FROM DIESEL in a Fuel Polishing System.


 

As we observe all the different products now available on the internet it is recommended that you choose a product that has a credible certification of efficiency. As you can see above our own product comes with the stringent SAE test certificates, but many other products come with nothing. Which can leave you guessing about how effective a product it is.
Other terminology to describe this process includes: fuel cleaning, fuel scrubbing, fuel polisher, fuel conditioning.Naturally occurring condensation is prevalent in warmer climates where the days are hot and the night’s cold. In the UK this problem occurs from Spring to Autumn.

Fuel Polishing products that we offer