Manufacturers are increasing the number of diesel vehicles that come fitted with SCR (Selective Catalytic Reduction) technology.
This is because they must comply with the new Euro 6 standards and form part of the overall drive to reduce emissions.
Thanks to SCR technology, Nitrogen Oxide emissions can be reduced by as much as 90%. It can also help to increase fuel efficiency
by between 3-5%.
Vehicles that come fitted with SCR technology are fitted with a special tank which stores a liquid-reductant agent known as AdBlue®.
Here are some helpful tips that you’ll need to know if your vehicle is fitted with an AdBlue® tank.
What is AdBlue®?
AdBlue® is made up from a mixture of urea and water and has to be topped up at regular intervals. When you drive, it travels from
the tank into the exhaust pipe via a dedicated catalyst. This results in a chemical reaction which turns most of the Nitrogen Oxide
molecules into nitrogen and water. This is then released into the atmosphere as steam.
How do I find and fill the AdBlue® tank?
It is best to check your owner’s manual for the location of the tank before you start. AdBlue® tanks are normally located next to
the fuel tank, under the rear floor in a car or possibly in the engine bay of a van. AdBlue® can be bought from your local dealer,
online from sites like Amazon or from some fuel stations / motorway stations.
How will I know when the AdBlue® tank needs filling up?
Your vehicle will alert you when your AdBlue® is running low. There will normally be a relevant warning light on your dashboard and
it is important that you take action as soon as possible. If you fail to refill the AdBlue® tank, your vehicle will run at reduced power
or will not restart once the ignition is switched off.
Who pays for AdBlue®?
As AdBlue® needs to be topped up regularly by you, the costs are not covered by a maintenance contract and is therefore payable by
the driver. The only exception is if the service schedule states that the fluid needs to be changed rather than topped up.
You can use the myadblue.co.uk website to check if your vehicle requires AdBlue®. It allows you to add your manufacturer, model and the engine size of your vehicle and provides you with everything you need to know, including where the top up tank is situated and how many top ups are required based on a variable mileage and driving style.