Frequently Asked Questions-AdBlue®

AdBlue is a registered trading name for Diesel Exhaust Fluid (DEF) used in a process called Selective Catalytic Reduction (SCR). SCR is a newly developed technology to reduce the amount of harmful pollutants emitted by diesel engines. DEF is not a fuel additive and never comes into contact with diesel. It is stored in a separate tank, typically with a blue filler cap.

Those vehicles that use SCR technology have a separate tank that holds AdBlue. After that, it is injected into the exhaust pipe, ahead of the SCR catalyst, downstream from the engine. When heated in the exhaust, it decomposes into ammonia and carbon dioxide. The NOx from the exhaust is converted to nitrogen and water when it reacts with the ammonia inside the catalyst. The water and nitrogen are then released from the tail pipe as steam.

Adblue is a highly purified, chemically formulated solution of technical grade high-purity urea (32.5%) and deionised water (67.5%). Deionised water is the purest form of water and doesn’t contain harmful chemicals or minerals that could negatively react with urea.

In addition to trucks, AdBlue is used in a growing number of cars and SUVs that are powered by diesel engines such as those made by Renault, Citroen, BMW, Audi, Volkswagen, Ford, Mazda, Mercedes-Benz and Toyota.

There are many different brands or names of AdBlue on the market. All of them say they are the best. Actually all AdBlue® mixes contain the same solution of 32.5% urea and 67.5% de-ionized water are the same. Don’t waste money on brands! You’re always better off comparison shopping for the lowest price per litre or valuing convenience over branding.

Most diesel engines derate automatically without AdBlue and will cease to function once the vehicle is off the road.

When the AdBlue on your car is running low, a dashboard warning light usually illuminates. It usually illuminates when there are around three litres of fluid left, which means you have approximately 1200 miles to fill up. You’ll then need to fill up the AdBlue as soon as possible.

As soon as you run out of AdBlue while driving, your engine will go into ‘limp home’ mode to limit its emissions, and once the engine stops, it won’t start until the tank is refilled with AdBlue.

Sadly, no. AdBlue must never be substituted for water, nor can it be diluted in any way. The AdBlue mixture is composed of 67.5% de-ionized water and urea. In contrast, tap water contains a lot of minerals and ions that cause damage to vehicle exhaust treatment systems.

Yes, you can top up with AdBlue® yourself.

• Top Quality – The AdBlue we supplied is VDA & SGS licensed and synthetic to fulfill ISO22241, DIN70070 standard, suitable to be used in all vehicles with Selective Catalytic Reduction (SCR) Systems.
• Lowest Price – We strive to provide Australian customers with the lowest prices.
• Best Services – Our friendly team is committed to providing the best customer service possible, quick response, prompt communication and fast delivery.