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AdBlue is a water-based urea solution consisting of 32.5% urea and 67.5% deionized water, used to reduce the exhaust emission of diesel engine vehicles.

Opet AdBlue® is an environmentally sensitive water-based urea solution produced in accordance with ISO 22241 standard, and is used to reduce the harmful nitrogen oxide (Nox) emissions released into the environment from diesel engine vehicles with SCR technology to the levels specified in Euro IV and later emission standards.

In addition to other emission systems, an SCR (Selective Catalytic Reduction) System is used in passenger cars, light commercial and heavy commercial diesel vehicles in order to meet the advanced Environmental Emission Standards.

SCR (Selective Catalytic Reduction) System

Opet AdBlue® is sprayed on this system, which is used in passenger cars, light commercial and heavy commercial diesel vehicles, before the exhaust wastes enter. Hence environmentally harmful exhaust wastes entering the system are converted into water and nitrogen, which have no harm to the environment, by interacting with Opet AdBlue®.

Opet AdBlue® has now become an integral consumable of your vehicle, such as fuel.

In order to obtain optimum performance from your diesel vehicle with SCR system, we recommend the use of Opet AdBlue® with VDA approval.

What to Know About AdBlue While Driving Your Diesel Vehicle With SCR System

The engine will electronically cut the traction power by 40% when the exhaust gas emission values of your vehicle exceed the legal limits. The fuel spent will increase when the traction power is cut off. In order to avoid this situation, you should pay attention to the following warnings on the dashboard of your car.

If the AdBlue Level is below 10%; The AdBlue Warning Lamp (AWL) on the dashboard will light up. When this happens, add VDA approved Opet AdBlue® to your AdBlue tank.

Opet AdBlue Quality

In order for the Selective Catalytic Reduction System called SCR to be functional, AdBlue must comply with the standards.

Opet AdBlue complies with quality standards such as;

  • AUS 32 TS ISO 22241-1 Quality Requirements,
  • AUS 32 TS ISO 22241-2 Test Methods,
  • AUS 32 TS ISO 22241-3 Handling, Transport and Storage,
  • AUS 32 TS ISO 22241-4 Filling Systems,

In case of using AdBlue that does not comply with quality standards,

  • Exhaust emission of your vehicle deteriorates,
  • Traction decreases,
  • Fuel consumption increases,
  • Catalyst system lifetime decreases.

(*) AdBlue is a registered trademark of VDA (Verband der Automobilindustrie). It is used under license.

Fundamental Principles About AdBlue

VDA approved Opet AdBlue® can be supplied as casting from Opet Fuel Stations, in 5L, 10L or 18L drums with filling apparatus.

  • Opet AdBlue® must not come into contact with any contaminating substance (eg dirt, dust, fuel oil, mineral oil etc.).
  • Any contamination of your vehicle's AdBlue tank may render the SCR System inoperable.
  • There is a separate AdBlue tank in your vehicle. Opet AdBlue® should only be filled into this tank.
  • If auxiliary equipment (eg funnel, drum, pump, etc.) is used while filling the AdBlue tank, care should be taken to clean these equipment.
  • Opet AdBlue® should only be stored in its original packaging, always closed, without exposure to direct sunlight.
  • The freezing point of Opet AdBlue® is -11 °C and it will freeze if it is exposed to temperatures below this temperature. Frozen Opet AdBlue® can be reused safely after it becomes liquid again.
  • Since the shelf life of Opet AdBlue® varies according to the ambient temperature as can be seen in the table below, it is recommended not to be stored for a long time at temperatures above 35 °C.

Effect of Temperature on Shelf Life

Temperature (C°)
10 °C &

Shelf Life 36 Month
Temperature (C°)
25 °C &

Shelf Life 18 Month
Temperature (C°)
30 °C &

Shelf Life 12 Month
Temperature (C°)
35 °C &

Shelf Life 6 Month

Note: There is significant reduction in shelf life at temperatures of 35 °C and above.