Yes my V90 is an Inscription D5 AWD
The adblue would not work in my paraffin heater!!
It works to be squirted into exhaust to neutralise the nasties. The same nasties for which VW and others got into trouble. Unfortunately it is only fitted to larger cars for system space reasons I think.
Well almost right, its squirted into the exhaust and reacts in a catalyst to reduce NOx (and on the latest, to pretty much zero). There is another way to reduce NOx with a catalyst alone, this only works on small engines fitted to light vehicles, all others need AdBlue (akthough the very latest NOx specs may require all to need it).
What VW did is disable the EGR which, is the primary method for NOx reduction. This helped throttle response and fuel consumption plus, it meant they could avoid fitting the exhaust treatment systems. In simple turns, if the vehicle detected no steering input for circa 1 minute, it changed to a map with massive EGR to trick the test (it would be almost un-driveable in this mode with lots of lag and hesitation).