Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue[3]) is a liquid used to reduce the amount of air pollution created by a diesel engine.

AdBlue is a liquid that’s added to diesel vehicles exhaust to help reduce harmful exhaust emissions (NOx). It turns harmful pollutants into harmless gases that do less damage to the …

AdBlue® is an aqueous solution designed exclusively for diesel vehicles fitted with a selective catalytic reduction (SCR) system. This technology has enabled diesel vehicle manufacturers to …

Aug 17, 2024 · What is AdBlue (aka diesel exhaust fluid - DEF) In a nutshell, AdBlue is a liquid substance that can be used in diesel engines with selective catalytic reduction.

Feb 25, 2025 · AdBlue is a fluid used in diesel engines to reduce harmful emissions - so, if the AdBlue tank runs dry, the system detects this and triggers a warning on your dashboard.

Jan 17, 2025 · The AdBlue system is a vital technology that enables diesel vehicles to meet strict environmental standards without compromising performance. Understanding what AdBlue is, …

Mar 26, 2025 · This guide also explains how AdBlue works, what it’s used for, what happens if your car runs out of AdBlue and where to buy it if you need it.