Blog
AdBlue guides and advice
Straight answers from the technicians who fix AdBlue faults every day. What it is, how to look after it, and what to do when the dash lights up.
What Is AdBlue and How Does It Work?
Owning a diesel · Published
AdBlue is a urea solution that lets modern diesels clean up their exhaust. Here is what it is, how the system works and what happens when it runs low.
How to Top Up AdBlue Safely, Step by Step
Owning a diesel · Published
Topping up AdBlue takes a few minutes if you do it right. Here is the safe way, plus what to do if it goes wrong or the warning stays on.
AdBlue Warning Still On After a Top-Up: What to Check
Warnings and symptoms · Published
You have filled the tank, but the light or countdown has not gone. Here is why that happens and what to do about it.
AdBlue in Cold Weather: Freezing, Heaters and Winter Warnings
Warnings and symptoms · Published
AdBlue freezes at about -11 °C, so modern vehicles have heaters to thaw it. Here is what that means on a frosty morning and when a warning points to a fault.
Short Journeys and AdBlue Faults: Why Town Driving Causes Trouble
Owning a diesel · Published
Short urban trips stop a diesel's exhaust getting hot enough to keep the AdBlue system clean. Here is what goes wrong, how to spot it early and what helps.
Buying a Used Diesel: The AdBlue Checks to Make First
Buying and fleet · Published
An AdBlue fault can turn a bargain into a bill. Here is what to look at, what to ask and what to walk away from before you buy a used Euro 6 diesel.