Since the standardisation of EU regulations discussed above, all manufacturers producing vehicles in the EU/EEA have to ensure that their vehicles are tested to meet these acceptable levels. Due to its incredible efficiency, the use of an SCR system with AdBlue is the preferred method for reaching these targets.
If you’ve bought a new diesel vehicle in the last few years since these regulations have come into force, it is highly likely that it will use AdBlue. Even if you do not need it right now, it will probably be a requirement of any new vehicle bought in the future, making it essential to have a working knowledge of the product.
The simplest way to check whether you need AdBlue is to have a look under your fuel cap cover — if there is a secondary, smaller cap that is black or blue adjacent to your main fuel cap, then you will require it. The secondary cap is often labelled with the product name to avoid confusion. Your owner’s manual should also detail if there is a SCR system in your vehicle or not and what exactly needs to be done to maintain it.
Jan., 23, 2018