Red Diesel (Gas Oil) Supplier in Kent
SE Fuels is a trusted red diesel (gas oil) supplier in Kent, providing reliable deliveries of red diesel (gas oil) to farms, agricultural businesses and commercial operations across the region. Red diesel (gas oil) is essential for powering machinery, equipment and generators, and our dependable delivery service ensures customers receive fuel when they need it.
Our agricultural fuel services include:
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Red diesel (gas oil) delivery
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Bulk fuel deliveries
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Farm tank refilling
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Seasonal harvest support
We understand the demands of farming and provide flexible delivery times to keep your machinery running. We work closely with:
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Farms and agricultural businesses
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Construction companies
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Plant and machinery operators
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Industrial and commercial customers

Red Diesel
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Agricultural fuel known as Red diesel or Gas oil, is a low-tax, red-dyed fuel derived from crude oil, primarily used for off-road machinery, agriculture, construction, and heating. It is chemically similar to standard road diesel but carries a lower excise duty, making its use on public roads illegal. It is also known as 35-second oil or tractor diesel. Red diesel is commonly created from petroleum. It is a fossil diesel which is derived from the fractional distillation of crude oil.
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Red diesel (gas oil) is a fuel used for off-road vehicles and machinery. It is commonly used in:
• Agricultural machinery (tractors, combines)
• Construction equipment
• Generators
• Plant and industrial machinery
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Red diesel (gas oil) is dyed red to distinguish it from standard road diesel and is subject to specific usage regulations.
We provide reliable fuel deliveries to homes, farms and businesses across the county including Ashford, Maidstone, Canterbury, Tunbridge Wells, Dover, Folkestone, Tenterden and the surrounding areas​​​​​​​


Who Can Legally Use gas oil?
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Travelling fairs and circuses
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Fuel used for non-commercial purposes – electricity generation and heating
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Agriculture, horticulture, fish farming and forestry
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Rail transport
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Community amateur sports clubs and golf courses
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Sailing, boating and marine transport (excluding private pleasure craft in Northern Ireland)
As of the 1st of April 2022, the UK government has removed the entitlement to use rebated fuels, including red diesel, for many sectors. This has required many businesses to use fuel that is taxed at the standard rate for white diesel. The change in legislation is to encourage users to switch to more sustainable fuels.
Can you legally use red diesel in diesel-powered vehicles on the road?
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Farmers in the UK can legally use red diesel (gas oil) in tractors and specialised agricultural vehicles on public roads only for specific, limited purposes. These include traveling between land parcels, agricultural contracting work, hedge/tree cutting, and gritting roads, with strict HMRC regulations on distance and permitted tasks.​
It is illegal to use red diesel (gas oil) on public roads. Farmers have a specific exception and are able to use public roads to access another piece of land within 1.5km, so long as both are owned by the same individual or business.
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Red diesel (gas oil) can be bought from many oil suppliers across Kent but it’s important to choose one that offers a reliable and quality supply service. ​As well as quality service, our red diesel (gas oil) is derived straight from the refinery, which ensures we supply only the highest quality red diesel (gas oil) to our customers. ​Prices fluctuate daily as a result of the global oil market, which is why we are unable to publish fixed prices online. Adding to this, other variables can impact prices, such as your required quantity and location. Therefore, it’s always best to speak to one of our team who can check the current prices and provide you with a live quote. Call us today.
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Agricultural AdBlue®
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AdBlue® is a diesel exhaust fluid (DEF) that has been developed for use in vehicles using Selective Catalytic Reduction systems to help eliminate the harmful nitrogen oxides (NOx) released on our roads. The use of AdBlue® in modern diesel vehicles is a legal requirement to help the UK Government achieve its net-zero target by 2050.
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Mixing AdBlue® with diesel-engine exhaust fumes significantly reduces the release of mono-nitrogen oxide from engines. Reducing NOx emissions is essential as it brings diesel-engine vehicles in line with Euro 6 emissions regulations, which called for a 67% drop in nitrogen oxides (NOx) released in the exhaust emissions of diesel cars.
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