Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

The reason why AdBlue crystallizes.

Model: (Various brands) Various
Part: Checks and maintenance

What is the reason why AdBlue crystallizes? It is not directly the fault of the air, but of three factors: first of all, low temperatures, because the cold promotes the separation and solidification of the components; the increase in the percentage of water in the mixture, because AdBlue is composed of 37% demineralized water and 33% technical urea. If the mixture absorbs external moisture (for example, from condensation or from unsealed tanks), the percentage of water increases, altering the balance and promoting crystallization. There is also contamination from external agents, such as contact with dust, fuel residues, or incompatible materials. When AdBlue is poured outside, it absorbs moisture from the environment, so not from the air itself, but from the water vapor present, which triggers crystallization due to differential evaporation. To avoid this, the first thing is proper storage in dry and cool environments and well-sealed containers; avoid contamination during refueling, and be cautious of low temperatures.

Posted on 18 January 2026 by ScegliAuto

Video tutorial

Related tutorials

What excess AdBlue produces on the bodywork
What excess AdBlue produces on the bodywork
(Various brands) Various We must be very careful when topping up the AdBlue, because while it is true that keeping the tank too empty causes the urea to crystallize inside (m…
How to Prevent AdBlue Crystallisation
How to Prevent AdBlue Crystallisation
(Various brands) Various AdBlue crystallisation is a common problem for diesel vehicle owners: the main method to prevent crystallisation is to keep the tank sufficiently ful…
What is the main problem with AdBlue tanks?
What is the main problem with AdBlue tanks?
(Various brands) Various In this video we see what the main problem is with AdBlue tanks on most vehicles that use this system for reducing harmful emissions. The main proble…

    Frequently Asked Questions

    • Vari - What does it mean when the message "insp" appears on a car? Read answer
    • Vari - What problems does the Kymco Downtown 300i have? Read answer

How to Replace the Battery on a Honda Vision 110

To replace the battery on a Honda Vision 110, you need to remove the front fairing of the motorcycle, located directly under the front headlamp. To loosen this panel, unscrew the two screws found at its top, just below the handlebar. Once these screws are loosened, lever under the panel to detach it, gaining access to the battery underneath: this battery must be removed from its housing by unscrewing the fixing screws and disconnecting the power cables, replacing it with a new one.

Watch the video!


by ScegliAuto

More videos