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Gas oil

About Gas oil

Red diesel is a type of fuel used to power off-road vehicles and machinery. Red diesel is essentially the same as white diesel, the only difference is that it contains a red dye.


Customs and Excise regulations state that a red dye must be added to the diesel for identification purposes. This is because red diesel is not permitted to be used as an automotive fuel in on-road vehicles. The duty rate on red diesel is 11.14ppl which makes it cheaper to run than standard diesel which has a duty of 52.95ppl.

Red Diesel Entitlement

From April 2022, red diesel will only be accessible to those using it for non commercial heating purposes, the horticultural or agricultural sectors, railway, fish farming and forestry. This is to encourage users to switch to a more sustainable fuel.

Please see below our GTL and HVO pages for more information


We provide nationwide delivery

If you require gas oil deliveries please complete our quote page and one of our specialists will be in contact


Red Diesel Specification 

There are three recognised standards of Gas Oil that are currently in use:

BS2869 Class A2, Class D and EN590.


Class A2 has a maximum sulphur content of 10ppm and is used for off road vehicles and equipment, while Class D has a maximum sulphur content of 1000 ppm and can only be used for heating or static generators. EN590 has a higher cetane value than A2 gas oil which means it has a shorter ignition delay and therefore burns more efficiently and cleanly, leaving fewer deposits in the engine’s fuel injection combustion chamber.

What industries does red diesel power?

Red diesel powers off-road equipment such as agricultural, plant equipment such as:

  • Unlicensed vehicles not in use on public roads

  • Tractors

  • Light agricultural vehicles

  • Agricultural material handlers

  • Agricultural engines

  • Agricultural processing vehicles

  • Mowing machines

  • Snow clearing vehicles

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