---
title: Larkholme: AdBlue in a Diesel Tank, Explained
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/larkholme-lancashire/
location: Larkholme
county: Lancashire
latitude: 53.906190
longitude: -3.048770
service: AdBlue in a Diesel Tank
updated: 2026-10-15
---

# Why It Occurs and How to Prevent It: AdBlue in a Diesel Tank in Larkholme

If AdBlue is already in your diesel tank, stop reading for a moment: leave the engine and the ignition off and phone 0333 366 0103.

Usually, if your motor hasn't turned, it is drained and thoroughly cleaned where your vehicle sits in Larkholme.

The remainder of this page covers why it occurs and how to ensure it doesn't — useful if you are reading ahead of time.

## AdBlue in a diesel motor, and its separate tank

Many modern diesels around Pheasant Wood, as well as Larkholme, run on two fluids; your engine takes only your diesel.

Kept in a tank of its own, AdBlue is fed into the exhaust stream and cleans it.

There's a filler for every tank.

Under one flap, side by side: that is the arrangement on many motors. Elsewhere, AdBlue's filler sits under the bonnet or in your boot instead.

At the petrol pump, your diesel side gets filled constantly.

Seldom topped up, AdBlue normally comes from a bottle, poured by a driver who must stop and think what filler it needs.

That gap is where the mistake lives.

## AdBlue in the diesel tank in Larkholme: how it takes place

Three things tend to line up, and carelessness is seldom one of them.

The warning comes first. As AdBlue runs low the vehicle tells you, and if it runs out completely, the vehicle drops into limp mode. So the top-up is done in a hurry: on a drive off Bentham Avenue before work, or in the car park at The Rossall Tavern on the way home.

Then, the hand goes for the cap it knew on the old vehicle — since a rental car, a new motor or a company car places the fillers somewhere your last one did not.

And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, and so nothing stops the tip once it has started.

Fleetwood or the heart of Larkholme: it is the same few seconds either way.

## Which filler is for AdBlue, and which for diesel?

Before you pour anything, whether on a driveway in Burn Naze or a forecourt in Larkholme, check these. They take a few seconds.

- Where it sits misleads; the cap does not. AdBlue ones are often blue or bear the word "AdBlue" — diesel ones normally don't.

- Many motors give AdBlue the smaller neck of the two.

- A label inside your fuel flap frequently shows which fuel goes where, on plenty of motors. Look for it.

- The handbook. If your filler isn't by the diesel cap, it is in the boot or under the bonnet, and the handbook says which.

- Ask the person who drove it last — before you leave, not when the light comes on — if you collect a hire or company car from somewhere like the car park at Poulton-Le-Fylde.

## Keeping AdBlue out of the diesel tank when you top up

Anywhere around Lancashire the light comes on, this is a routine for the day.

- Stop on level, motor off, with time in hand — not rushing on the side of Larkholme Parade.

- Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it does the trick.

- Both behind one flap? So confirm the lid on the diesel filler is still closed before raising the bottle.

- Stop when your tank fills or the bottle is empty; before that, tip gently using its own spout.

- Close the cap and check once more. Make sure the diesel cap was never opened. Only then start your car.

Stop there if you find, at stage two or three, that you have already poured into the diesel side.

Never go on to step five.

## Put AdBlue in the diesel tank around Larkholme already?

Short list, then. Top of it: the motor remains unstarted.

The fuel pump starts on many diesels the moment the ignition is switched on — and so keep it off.

Don't top up with diesel to thin it: AdBlue doesn't mix with diesel, it sinks to the bottom of the tank, where the fuel is sucked from.

The attendants at Shell, Asda or another forecourt will normally help to push the vehicle clear if you ask.

On your own drive in Larkholme? So the vehicle stays put.

Stop as soon as it is safe then switch off, if your engine has already run.

Larkholme sits under 10 miles from the M55; there, take the first junction.

Tell us roughly how far it went: a run towards Lancaster, under 15 miles away, is a bigger job than a short hop across Larkholme.

## What occurs when our engineers get there around Larkholme

Our van reaches the vehicle wherever it has come to rest — your own drive, beside Larkholme Community Centre, or outside Larkholme Primary School.

What liquid was put in, the amount, and if it ran: we ask because those answers set both work and price.

No one sets off before you've heard our quote over the phone.

Emptying your tank comes next, then a full flush of the fuel system.

Unlike petrol, AdBlue forms crystals and eats at some fuel-system metals, and none of that washes away by itself. That is why it counts more.

After the filter has been cleaned — or replaced, where needed — clean diesel is added, and then your car is tested.

We don't leave until it has been fired up and is running properly.

Unstarted vehicles usually need a half-hour visit from the moment we arrive. The kit is fine on a live forecourt, and quiet enough for a residential street late at night.

Paying happens on the day, not upfront, and you are given the documents your insurer wants: an engineer's report and a VAT invoice.

It is worth checking your policy while we travel to you: misfuelling cover comes with plenty of policies.

## About Larkholme itself

Larkholme is a coastal suburban area in Lancashire, situated near the cities of Lancaster and Fleetwood. Larkholme has a population of around 3208 people and is characterised by detached housing. Larkholme sits at a low elevation of 7 metres above sea level, close to Rossall Beach and Cleveleys.

## AdBlue drains across Lancashire, Larkholme included

Rossall Beach and Cleveleys are among the towns around Larkholme, a residential suburb, that the same vans cover, throughout FY postcodes.

Give a postcode beginning FY7 8, and our van gets there quickest.

The car does not need to move.

The drain takes place right there, whether a driveway, a street near Westview Community Centre, or a lay-by on the way to Fleetwood Rugby Club.

Tricky to pin down, like the back of St Edmund of Canterbury? By a county line? Asking is better than assuming, so phone.

## For Larkholme people, the short version

Pour no AdBlue till you've read the cap.

Even so AdBlue in your diesel tank? Petrol in Diesel can empty it wherever it stands, anywhere across Lancashire: switch it off and call 0333 366 0103.
