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What is the Most Common Problem with AdBlue?

Model: (Various brands) Various
Part: AdBlue warning light

What is the most common problem with AdBlue? It is definitely crystallisation, which arises from poor quality Urea. Unfortunately, we know the issues with sourcing Urea, which used to come 90% from Ukraine, and now comes from third-party producers that often do not provide high-quality products. The only tool users have to avoid problems related to poor quality is to add an additive. There are excellent ones available on all e-commerce sites, such as Tunap 988, which can be found on Amazon for £20.95, or Bardahl anti-crystallisation additive, available on eBay for £31.28.

Updated on 15 July 2026 by ScegliAuto

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How to Open a Stuck Boot on the Peugeot 407?

On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

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