What Is AdBlue®?
AdBlue Zertifikat AdwelleDiesel exhaust fluid (DEF; also known as AUS 32 and marketed as AdBlue®) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water. DEF is consumed in a selective catalytic reduction (SCR) […]