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What is Gas Oil?

Learn more about gas oil by reading our short guide. We can also supply you with the gas oil you need today! Call our dedicated fuel team now on 0845 313 0845, for our very best price.

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Crown Oil’s short guide to Gas Oil and it’s legal uses

Gas oil is a commercial fuel used as an alternative to road diesel. It has a lower tax duty and thus comes coloured red (leading to the name, red dye diesel) to help identify it’s usage by Customs & Excise (HMRC).

If a vehicle is suspected of using gas oil illegally, such as in vehicles used on public roads. The red dye will stain the fuel tank giving away its prior use within the vehicle.

You may hear people refer to the fuel as gas oil, but it is also known as red diesel as well due to the colour of the dye that’s added to gas oil. There may also be times when you hear it referred to as 35-second oil, tractor diesel and agricultural diesel which are some of the other more common names it often goes by. But gas oil and red diesel are the two most common names you’ll hear it being called.

Who can legally use Gas Oil?

There are regulations surrounding who can both buy and use gas oil in the UK. In general terms, it’s used by commercial customers and some households to heat up their businesses and homes. However, another more suitable option is to use heating oil for homes and industrial heating oil for businesses.

The other main uses are as a replacement for road diesel in non-road vehicles such as agricultural and construction vehicles. It is also used as the main source of fuel for diesel-powered machinery and equipment, such as generators.

Of course, there are many other uses as a replacement to regular white diesel, so long as you adhere to current regulations on its legal usage.

Which industries use Gas Oil?

There are a variety of different industries using gas oil such as; agriculture, horticulture and construction. It is used off-road, for machines and vehicles such as tractors and ride-on lawn mowers

For construction machinery, it is available to operators of excavators, dumper trucks, generators and pumps. It is also commonly used in diesel generators, manufacturing equipment, by councils and for some oil-fired heating systems. In more recent years, it has been used within data centres and hospitals, as fuel for backup generators.

Can you legally use Gas Oil in diesel-powered vehicles on the road?

As already stated, there are some restrictions and guidelines surrounding its usage, for instance, it is NOT a substitute for road diesel. Using it in a diesel-powered vehicle on a public road is an offence.

Although it is considerably cheaper than regular diesel due to the lower tax duty, the potential fines or prosecution incurred from using gas oil illegally could be much higher than any savings made.

Ready to learn more about Gas Oil and request a quote?

Hopefully, we’ve been able to answer many of your questions about gas oil. But should you want to find out more, we have further information on our frequently asked gas oil (red diesel) questions and answers page. You can also view the full range of fuel and oil products we can supply if you have further requirements.

If you have any further questions or would like to discuss your own requirements, our friendly and knowledgeable team will be able to assist you by calling us today on 0845 313 0845. You can also request a quote and purchase gas oil by calling the same number.

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