Which name is commonly used when discussing diesel exhaust fluid (DEF)?

The term commonly used when discussing diesel exhaust fluid (DEF) is "AdBlue." This is a specific brand name for a urea-based solution that is used in selective catalytic reduction (SCR) systems to reduce nitrogen oxides (NOx) emissions from diesel engines. The fluid works by converting harmful NOx gases into nitrogen and water, which are less harmful, thus helping vehicles meet environmental regulations.

AdBlue is a widely recognized term in the automotive and commercial vehicle industries, especially in regions with strict emission standards. Its formulation is standardized to ensure compatibility with SCR systems in diesel engines, making it essential for proper operation of these vehicles. The effectiveness and availability of AdBlue have made it the go-to terminology for DEF, contributing to its recognition among both professionals in the auto industry and general consumers.

The other choices are not relevant to diesel exhaust fluid; "AdBlut" seems to be a misspelling, "Adware" refers to advertising-supported software, and "Amsol" does not relate to diesel exhaust fluid. Therefore, AdBlue stands out as the correct and appropriate term associated with DEF.