Fuel Types

Everything you need to know about AdBlue

You may not have heard of AdBlue before, but as the number of diesel powered vehicles that use it increases, it could be worth making yourself aware of this diesel exhaust treatment product.

AdBlue is more commonly available at service stations where trucks stop to re-fuel, but as the pump is often next to the regular diesel pump – motorists have been known to mis-use this liquid.

What is AdBlue?

AdBlue is a Diesel Exhaust Fluid (DEF) premixed solution containing 32.5 per cent high purity urea, and 67.5 per cent deionized water.

This fluid is stored in a separate tank on the vehicle, and is injected into the exhaust system after the combustion process takes place, which in turn helps the diesel exhaust meet cleaner emission levels.

What vehicle types use AdBlue?

In Australia, AdBlue is primarily used in heavy commercial vehicles such as trucks. However, passenger vehicles like the Mazda CX-7 (diesel) and Mercedes’ ML and G models, and now Jaguar have this technology too.

Volkswagen and Audi have European models that use AdBlue, and it’s possible that we may see these vehicles in Australia in the future.

How will I recognise AdBlue at the service station?

AdBlue is less expensive than regular diesel which has been known to distract drivers looking for a bargain.

The AdBlue pump is often next to a regular diesel pump, and can look very similar, which again can cause some confusion amongst motorists.

It’s not uncommon for motorists to use the wrong fuel in their vehicle; with our Patrols attending about 12 mis-fueling incidents each week.

What should I do if I accidently put AdBlue into my diesel tank?

Don’t turn the key! Our advice to any motorist who has used the wrong fuel type is to stop operating the vehicle immediately.

RAA Members can call for Road Service on 13 11 11, and one of our Patrols can assess the situation and arrange towing.

If you do happen to turn the key, and your vehicle stops working somewhere down the road – the best thing to do is pull over safely, put the hazard lights on and call for Road Service.

But in instances like this, you may find further repairs to the rest of your fuel system are required.

In the case of AdBlue, as it consists mostly of water, the damaging effects to the diesel fuel delivery system can be serious.

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