Don't start the engine, we can help

Put AdBlue In Your Diesel Tank?

Putting AdBlue in your diesel fuel tank can cause serious damage if the engine is started, because it crystallises inside the fuel system. The good news is it can usually be put right if caught early. Don't start the engine and call us.

Call Now: 01256 805612 What To Do Now

AdBlue filler cap next to a diesel fuel cap on a vehicle

Every 3.5 minSomeone misfuels in the UK

You're not alone, and you're not stuck. In the UK, someone puts the wrong fuel in their vehicle roughly every three and a half minutes. It's one of the most common mistakes on the road, and it's exactly what we fix, every day.

What happens

Why AdBlue in the fuel tank is a problem

AdBlue is designed to go into its own separate filler, not the fuel tank. It's easy to confuse the two, especially on unfamiliar vehicles. Put in the diesel tank, AdBlue does not burn like fuel.

The real issue is that AdBlue crystallises inside the fuel system. If the engine is started, it can circulate and set hard around fuel components, which is where serious and expensive damage comes from. Caught early, before the engine is started, it's usually a straightforward drain and flush.

Our technicians drain the contaminated fuel, thoroughly flush and clean the system, and get you safely back on the road, without the need for recovery in most cases.

Do not start the engine

This is the single most important thing. Starting the engine can circulate the AdBlue and allow it to crystallise around the fuel system. Leave the engine off, don't turn the key, and call us straight away.

What to do right now

Three simple steps

Stay calm. Follow these steps. You're not stuck.

Step 1

Don't Start Your Engine

If you've already started it, turn it off as soon as it's safe. Don't try to drive.

Step 2

Call Us Now

Ring 01256 805612. Tell us your location and what's happened. We'll be there fast.

Step 3

We Fix It Roadside

We drain and flush your system on site and get you moving again where possible.

Call Now: 01256 805612

Available 24/7 • Across the UK

Rated 4.8/5 By Drivers Just Like You

Thousands of satisfied customers nationwide.

Common questions

AdBlue in your diesel tank: your questions

I put AdBlue in but haven't started the engine, is it ok?

That's the best position to be in. As long as the engine hasn't been started, the AdBlue hasn't circulated. Leave the engine off, don't turn the key, and call us to drain and flush the system. Caught this early, it's usually straightforward.

What happens if I start the engine?

Starting the engine can circulate the AdBlue through the fuel system, where it can crystallise and set hard around components. That's what turns a simple fix into a costly repair. If you've already started it, stop, and call us straight away.

Why is AdBlue so easy to put in the wrong place?

AdBlue has its own filler, often right next to the diesel one, and on unfamiliar vehicles it's an easy mix-up. It happens more than people realise, so don't feel embarrassed, just don't start the engine and call us.

Can you fix it at the roadside?

In most cases, yes. Our mobile units drain the tank and flush and clean the system on site, so there's usually no need for towing or a garage. Our technician will confirm when they assess your vehicle.

Call us now: 01256 805612

Wrong fuel in your vehicle? Don't wait.

Call our team any time, day or night, and we'll advise on the safest next step.

Call Now: 01256 805612 Check Coverage