What Is Adblue And What Do I Need To Know About it?
Wednesday, 28. March 2018
I’ve mentioned this in that past but surprisingly few people are aware of its existence and what it does. So just a reminder if you are buying or leasing a new diesel car or have recently taken delivery of one – quite simply it’s an additive.
It sits in a large at the back of the car, normally around 12 litres in size, and is squirted in small amounts, when the engine is running, into the exhaust gas causing a chemical reaction turning NOx gas into its constituent parts, Nitrogen and Oxygen.
Adblue is a trade name, created by its manufacturer to bring down NOx emissions in some cars that couldn’t meet the Euro 6 emissions tests. It isn’t always clear if your car uses Adblue, some include Blue in their name whilst VW uses SCR in the model name.
For most people, driving low mileage, the tank won’t need topping up between services but if you need to, following a warning light illuminating on the screen, some garages have Adbue on the pumps, costing around 60 pence per litre. Or you can buy it in Halfords or your main dealer for more.
Some cars have the top up away from the fuel filler to ensure that you don’t put Adblue in the fuel tank and vice versa. You need to check your handbook as some fillers can be well hidden, even in the spare wheel well. If you are unsure it might be wiser to call into the main dealer or Halfords who I believe offer to top it up for free if you buy the Adblue from them of course.
Warning: The AA attended about 20,000 Adblue callouts last year, often because the car ran out of Adblue. A warning light will glow on the dashboard when you have about 3 litres left or about 1,200 miles. If you run out whilst driving, the car will continue but if you turn the engine off with no Adblue left in the tank it won’t restart. So if you need Adblue and you find somewhere to top it up – don’t turn the engine off just in case they’ve run out also. By Graham Hill
