---
title: Galgate: AdBlue in a Diesel Tank, Explained
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/galgate-lancashire/
location: Galgate
county: Lancashire
latitude: 53.991730
longitude: -2.789030
service: AdBlue in a Diesel Tank
updated: 2026-10-08
---

# How It Occurs and How to Avoid It: AdBlue in a Diesel Tank in Galgate

Stop here a minute if the diesel tank already holds AdBlue in it: ignition off, motor off, and phone 0333 366 0103.

In Galgate, finding it before your engine turns normally leaves draining and a full flush on the spot.

Nothing happened yet? Further down, the page explains the why it happens and the how to avoid it for good.

## Why does AdBlue in a diesel vehicle need its own filler?

Plenty of modern diesels around Conder Green, like those in Galgate, carry on two fluids; your engine takes only the diesel.

Its own tank keeps it, and from there it goes to the exhaust, and there a spray cleans the gas.

Each tank has its own filler.

Some cars put the AdBlue filler in your boot or under the bonnet; a lot more have both together under one flap.

Diesel gets filled on each forecourt call-out, week in, week out.

A driver who has to stop and think where it goes usually fills the AdBlue side, from a bottle, and much less regularly.

The mistake grows in that gap between them.

## How AdBlue in the diesel tank occurs around Galgate

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

Haste comes from the warning. Your car tells you as AdBlue runs low, and an empty tank puts it into limp mode — so the top-up gets done in a rush, before work on a drive off Stoney Lane, or on the way home in the car park outside Plough Inn.

Then the vehicle is strange. A hire car, a new car or a company car puts the fillers where your last one didn't, and your hand reaches for the cap it would have used on the old one.

Nothing halts the pour after it has started, since a bottle with a spout goes into a diesel filler as easily as an AdBlue one. The bottle fits.

It takes seconds, whether out in Ellel or right in the centre of Galgate.

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

A couple of seconds is all the checks take — so run through them before you tip anything, on a drive in Upper Thurnham or a forecourt in Galgate.

- Where it sits can mislead; the cap does not. AdBlue caps tend to be blue or bear the word "AdBlue" — diesel ones usually don't.

- The size. On many vehicles the AdBlue filler neck is the smaller of the two.

- Open the flap and look for a label — plenty of cars mark which belongs in each filler right there.

- Can't see it next to your diesel filler? Then look below the bonnet or in your boot — the owner's manual says where.

- Picking up a hire or company car, say at the car park outside Lancaster? Ask the person who drove it last before leaving, not once the light comes on.

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

Wherever in Lancashire the light comes on, here is a routine for that day.

- Stop somewhere level, motor off, with time in hand — not hurried on the side of Main Road.

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

- Leave your diesel cap on. If both sit under one flap, check the diesel cap is still closed before you lift the bottle.

- Pour slowly, using the bottle's own spout. Stop when it is full or when the bottle is empty.

- Close the cap and check a second time. Make sure your diesel cap was never opened. Only then start the car.

If at stage two or three you find you have already poured into your diesel side, stop there.

Leave out step five entirely.

## AdBlue in your diesel tank already, in Galgate?

The short order of things, beginning with no starting your engine.

Do not switch the ignition on; on plenty of diesels that alone runs the fuel pump.

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

The staff at Bailrigg Motors, Quality Fuels or any forecourt will usually lend a hand to push your car away when you ask.

Leave it where it is if you are on your own drive in Galgate.

Already run? Stop once it is safe, then switch off.

Galgate sits under a mile from the M6; there, take the next junction.

About how far did it go? Hopping across Galgate is less work than a trip of under 5 miles to Lancaster, so tell us.

## Our arrival around Galgate, and what happens next

Outside Ellel St John the Evangelist Church of England Primary School, near Ellel Village Hall or on your own drive: wherever the car has stopped, our technicians come to it.

Which liquid was put in, the amount, and if it ran: our engineers ask because those replies decide both work and price.

The quote comes on the call, before any van leaves.

After that: draining, then a thorough flush of the entire system.

Unlike petrol, AdBlue leaves crystals and attacks some fuel-system metals, and neither clears out by itself. That is why it counts more.

Filter cleaned or, where it must be, replaced; fresh diesel in; then a check of your car.

After that we fire it up and check it runs correctly before we leave.

If the motor hasn't run, most jobs take about half an hour once we are there, using pumps that are fine on a working forecourt and quiet enough to use outside a house after dark.

The insurer usually wants the engineer's report and your VAT invoice, and both are yours once the job is done. Payment comes on the day, with no money upfront.

It's worth checking your insurance while we travel to you: misfuelling cover comes with plenty of policies.

## About Galgate itself

Galgate is a village in Lancashire, situated near the coast and approximately 4 miles from Lancaster. Galgate has a population of around 1838 people and is characterised by semi-detached housing. Galgate sits at an elevation of 23 metres, close to the nearby villages of Ellel, Hampson Green, and Smith Green.

## Galgate and Lancashire: AdBlue drains across the area

Over LA postcodes, our vans that cover Galgate — a coastal village — work the surrounding locations too, Smith Green and Hampson Green among them.

The van reaches you fastest with a postcode starting LA2 0.

No need to move your car.

A driveway, a lay-by on the way to Cockshades Wood, a side street close to Galgate Methodist Church: our technicians drain the vehicle where it is.

Ring and ask rather than guessing if you are near a border, or somewhere hard to explain, like the back of Galgate Community Rooms.

## The short version for Galgate people

Tip no AdBlue till you have read the cap.

AdBlue in the diesel tank regardless? Keep the car switched off and ring 0333 366 0103; Petrol in Diesel drains it where it stands, across Lancashire.
