this morning while calling in for my paper at the bp on the a45 near j15 of the m1 i spied 2 tipper drivers filling up their ad blue tanks from the water hose at the side of the garage building! very naughty and the mind boggles on the actual money saved!
paul
AdBlue is a registered trademark for AUS32 (Aqueous Urea Solution 32.5%). It is a solution of high purity urea(32.5%) in demineralised water (67.5%) used as a supplementary operating fluid (reducing agent) in diesel-powered vehicles using selective catalytic reduction (SCR) to improve exhaust emissions. AUS32 is primarily produced in Europe by BASF and AMI, although many other companies manufacture their own similar solutions in varying quantities.
AUS32 is carried onboard the vehicle in a tank separate to the fuel system, and is sprayed into engine exhaust gases in a special catalytic converter. It is thus a common misconception that AUS32 is a fuel additive, whereas in actual fact it remains totally separate from the fuel system. When properly circulated into the exhaust gases of an SCR-equipped vehicle, the oxides of nitrogen formed by combustion of diesel fuel are converted by a chemical reaction into their basic and non-polluting forms, nitrogen and water. A typical SCR system uses an amount of AUS32 equivalent to approximately 3 to 5% of the vehicle’s fuel consumption.
In order to ensure that the SCR system continues to work effectively, care must be taken to ensure the purity of the catalyst and the reducing agent. Even small amounts of contaminant can severely impact the performance of the SCR system. Manufacturing quality control for AUS32 solutions is governed by DIN standard 70070.
It would have been marginally more effective if they had simply ■■■■■■ into the tank instead.
Assuming they are O/D’s on an R&M contract, should anything go wrong, I can foresee someone asking them to produce their Ad-blue reciepts.
