Currently in the U.K. it is permitted to use up to 2,500 litres of BioDiesel as a road fuel per year without the need to register and pay Duty to HMRC on each and every litre of fuel used.
However if you should use 2501 litres in a year, then you then will need to register with the HMRC and pay the Duty on ALL the 2501 litres fuel, Not just the 1 litre over the 2500 De-Minimis limit....
The De-Minimis 2K5 limit applies to 'Bio' sourced fuels ONLY.
Therefore, things like used-engine oil, Hydraulic Oils ATF fluids, transformer oils coolant oils residual oils etc, as well as Kerosine, Heating oils are NOT ALLOWED under this 'allowance'
The unorthorised use of these type fuels will contravine the Hydrocarbons Act and you will be in very hot water if caught using these as fuel in a Road-Going vehicle.
Fuels sourced from BioMass such as Ethanol should be checked at the time with HMRC as these can be covered under separate regulations.
Vegetable oil based fuels such as mixtures of veg-oil and Petrol and Std Duty-Paid Diesel are OK.
Proper BioDiesel MADE from veg-oils are also OK.
More details on this forum.
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