There have been recent discussions about AdBlue and how it affects fleet operations. We want to explain what AdBlue is, how it’s been used and to help you with any queries you may have.

AdBlue is an additive that is 32.5% urea and many vehicle manufacturers use it in their diesel powertrains in order to meet Euro 6 emissions regulations.

The liquid is added into the selective catalyst reduction (SCR) system in the exhaust chain, triggering a chemical reaction, which converts NOx into nitrogen and water vapour.

It’s been used for a number of years in commercial vehicles; however, fleet managers and drivers may not experience it until a warning light signals a top-up is required.

This is what we want to highlight. It’s essential that drivers are fully aware of the process so it doesn’t come as a nasty surprise. If you ignore the warning light and the AdBlue runs out, your vehicle will stop and unfortunately won’t restart until it’s refilled.

Other tips to remember:

• If you mistakenly put AdBlue in your fuel tank, don’t start the engine and contact your car hire provider or your manufacturer for advice
• Don’t fill the AdBlue tank with any other liquids
• Try and prevent contaminating AdBlue

This is particularly relevant advice for any drivers in a long-term hire car who are more likely to see a warning light in a vehicle they are driving regularly for a longer period of time.

If you have any queries on AdBlue or you’d like to know more about it feel free to contact us for advice. More importantly, if you see an AdBlue warning light come on in your rental vehicle, don’t ignore it – please call us!