Bluetech Exhaust cleaning reagent

Bluetech Exhaust cleaning reagent (Add Blue)  is basically a urea solution used in modern diesel engines to cut nitrogen oxide (NOx) emissions.

Here’s the no-BS breakdown:
    •    Composition: 32.5% high-purity urea + 67.5% deionized water.
    •    Use: It’s injected into the exhaust stream in SCR (Selective Catalytic Reduction) systems.
    •    How it works:
    1.    Exhaust gases leave the engine hot and full of NOx.
    2.    AdBlue is sprayed into the exhaust before the SCR catalyst.
    3.    Heat converts the urea into ammonia (NH₃).
    4.    The catalyst reacts ammonia with NOx → converts it into harmless nitrogen (N₂) and water vapor (H₂O).
    •    Why it matters: Without it, Euro 6 / EPA Tier 4 diesel vehicles would fail emissions tests, and in many trucks the engine will limit power if bluetech Exhaust cleaning reagent (Add Blue) runs out.
    •    Storage: Sensitive to contamination, freezes at -11 °C (but systems have heaters).

In short — it’s not a fuel additive, it’s an exhaust cleaning reagent. No Bluetech exhaust cleaning reagent Add Blue = legal trouble and power cuts for compliant diesel vehicles.