Real Decreto 290/2015, de 17 de abril, por el que se modifica el Real Decreto 61/2006, de 31 de enero, por el que se fijan las especificaciones de gasolinas, gasóleos, fuelóleos y gases licuados del petróleo, se regula el uso de determinados biocarburantes y el contenido de azufre de los combustibles para uso marítimo

This Spanish Royal Decree updates the technical specifications for various fuels, including gasoline, diesel, fuel oil, and liquefied petroleum gas. It also regulates the use of certain biofuels and the sulfur content in maritime fuels. This affects fuel producers, distributors, and consumers in Spain, ensuring compliance with environmental standards and promoting the use of cleaner energy sources.