AdBlue at Halfords
You may be asking ‘what’s AdBlue and why do I need it?” AdBlue is a special liquid that’s sprayed into diesel car exhausts to reduce the amount of harmful gases released into the environment by diesel engines.
If you’re interested in the science, the AdBlue mixture is made from urea (the stuff you find in urine) and is injected in tiny quantities into the car’s exhaust gases, where it rapidly breaks down mono-nitrogen oxides in the fumes. This helps to reduce the environmental damage caused by diesel fumes and keeps the air cleaner – which is good for us all. In particular, it cuts NOx pollution and particulate emissions.
Your AdBlue is typically topped up as part of a service, with many drivers unaware it’s even there. If your AdBlue warning light comes on, then you’ll need to top it up quickly, or your vehicle may enter limp-home mode or even stop working at all.
Thankfully, topping up the AdBlue reservoir is easy and cheap. Our - opens in a new tab includes all the fluid you need and comes with a handy pouring spout to make refilling a doddle.
You can find Halfords AdBlue as part of our selection of - opens in a new tab As well as AdBlue, you can find a range of diesel injector cleaners, additives and system cleaners that will keep your car’s fuel, engine and exhaust systems clean on the inside.
AdBlue FAQs
Do all diesel cars need AdBlue?
No, only newer diesel cars with emission control systems use it. If your car needs it, you’ll usually get a warning on the dashboard when it’s running low.
Does AdBlue expire?
It does, but not quickly. If it’s stored properly, it can last a couple of years. Heat and sunlight can shorten its life, so it’s best kept sealed and in a cool place.
How much AdBlue does a car need?
It varies from car to car. Some need topping up every few thousand miles, others last longer. The car will normally tell you when it’s getting low.
Are all AdBlue the same?
Most AdBlue sold is made to the same standard, so there isn’t a big difference between brands. As long as it meets the required spec, it should be fine to use.
Does AdBlue freeze?
Yes, it can freeze in very cold temperatures, usually below -11°C. Cars that use it are designed to handle this, so it’s not usually something you need to worry about.