DEF – Diesel Exhaust Fluid

Intro

DEF (Diesel Exhaust Fluid) is an Aqueous Urea Solution produced with high-purity urea mixed with demineralized water and was formulated to meet the specifications of ISO 22241-1:2019 for reducing NOx emissions in diesel engines. Available in two grades, DEF AUS 32 and Marine DEF AUS 40.

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