AdBlue

AdBlue is a non-toxic, non-flammable, odourless and biodegradable solution. Many new diesel cars use AdBlue to reduce harmful emissions. It’s important to keep AdBlue topped up as your car may not start without it. AdBlue is a mixture of urea and deionised water. As AdBlue is injected into the car exhaust, it turns into ammonia and turns harmful nitrogen oxide into harmless nitrogen and water.