Cofan Blue is an aqueous solution specially designed for Diesel engines with a SCR (Selective Catalytic Reduction) technology. It consists of 32.5% high purity urea and demineralised water with the purpose of cleaning up gas emissions and protect the environment by reducing pollutant gases that contribute to the greenhouse effect, transforming the nitrogen oxides into natural components of the atmosphere (nitrogen and water vapour). It is very easy to use and can be carried out at any time. Always carry a bottle in the boot of your vehicle and do not run out of it. It is important to store the AdBlue solution between -11°C and +30°C to ensure a minimum service life of 18 months.