---
title: AdBlue in a Diesel Tank Westville? Read This
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/westville-devon/
location: Westville
county: Devon
latitude: 50.280980
longitude: -3.783740
service: AdBlue in a Diesel Tank
updated: 2026-10-22
---

# Preventing AdBlue in a Diesel Tank in Westville: Why It Happens

Stop reading a minute when the diesel tank already has AdBlue in it: ignition off, engine off, then phone 0333 366 0103.

Normally, if the motor has not turned, it is emptied and fully rinsed where the car sits in Westville.

If you're reading before it has happened, the remainder of this page is about why it occurs and how to make sure it doesn't.

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

Diesel feeds the motor — but many modern diesels seen about Westville and Dodbrooke hold a second fluid too.

The exhaust, not the engine, is where AdBlue ends up: dosed into the fumes to fresh it, from a separate tank.

Each tank has its own filler.

Other motors keep the AdBlue filler in your boot or under the bonnet; plenty of others place both side by side under one flap.

Filling your diesel side at the petrol pump goes on all the time.

The AdBlue side is filled far less frequently, usually from a bottle, and usually by a person who has to stop and think where it goes.

The mistake grows in the gap between them.

## How AdBlue in the diesel tank occurs in Westville

Carelessness rarely causes it. Instead is three things lining up together.

To start with, the warning. Low AdBlue triggers a warning from your car, and running out leads to limp mode — so a rushed top-up, maybe before work off Ashleigh Road, perhaps outside The Ring O'Bells Inn on the way home that evening.

Then, your hand goes for the cap it knew on the old motor — since a hire car, a new car or a company car places the fillers somewhere your last one didn't.

A spout-topped bottle finds no obstacle at a diesel filler any more than at an AdBlue one. And so the tip, once begun, carries on.

Kingsbridge or the middle of Westville: it takes the same few seconds either way.

## The AdBlue filler and your diesel filler: telling them apart

A couple of seconds is all these take — so run through them before you pour anything, on a drive in Easton or a forecourt in Westville.

- Position misleads; the cap doesn't. AdBlue ones are often blue or bear the word "AdBlue" — diesel ones normally don't.

- Look at the size: the smaller neck is, on plenty of cars, the AdBlue one.

- A label inside your fuel flap often shows which fuel goes where, on many vehicles. Check for it.

- The handbook. If your filler isn't by your diesel cap, it's 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 — when you pick up a hire or company car from somewhere like the car park at Ivybridge.

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

Wherever across Devon the light comes on, this is a routine for the day.

- Turn off after you park — flat ground, motor stopped, and never rushed by Badgers Close at the roadside.

- Silly as it sounds, speaking "AdBlue" aloud while you unscrew the cap works — once you've located your filler and read it.

- The diesel cap stays on. When the two sit under a flap, confirm it's shut before lifting the bottle.

- Slowly is best, through the bottle's own spout, until it is full or the bottle runs out.

- Close the cap, and check again — confirm the diesel cap remained closed the whole time. After that, start the car.

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

Leave out stage five altogether.

## Already put AdBlue in the diesel tank in Westville?

Don't start the motor: that's how the short order of things begins.

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 sucked from.

The staff at Asda Express, Texaco or any forecourt will normally lend a hand to push your car away if asked.

On your own drive around Westville? Then the car stays put.

If the engine has already run, stop as soon as it is safe then switch off.

The next junction is where to come off if you are on the M5, under 50 miles from Westville.

Distance counts — a quick hop across Westville makes a smaller job than driving under 25 miles to Plymouth — so say roughly how far it went.

## Westville: what happens when our engineers arrive

By West Alvington Church of England Academy, close to Kingsbridge Family Church or on your own driveway: wherever the vehicle has stopped, our engineers come to it.

The replies determine the work and our quote, and so our engineers ask what went in, roughly how much, and if it has run.

You hear that quote by phone, before anyone heads out.

Draining that tank comes next, then a thorough flush of the fuel system.

With AdBlue that counts more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, so it does not wash out on its own.

The filter flushed or, where it must be, swapped; fresh diesel in; then a check of the vehicle.

Before leaving, our engineers start the car and make sure that it's running properly.

Unrun cars mostly need a half-hour job after arrival. The kit is fine on a busy forecourt, and hushed enough for a driveway after dark.

No money upfront; you settle up that day. At the end, a VAT invoice and a report from the engineer go to you for the insurer.

Before we get there, take a look at your policy; many carry cover for misfuelling.

## About Westville, briefly

Westville is a suburban area in Devon, situated inland at an elevation of 39 metres, approximately 17 miles from Plymouth. Westville has a population of around 2336 people and is characterised by predominantly terraced housing. Westville is located near other settlements such as Kingsbridge, Ticket Wood, and West Alvington, and is about 180 miles from London.

## AdBlue drains about Westville, and Devon beyond

Ticket Wood and West Alvington are among the places near Westville, a residential suburb, that the same teams cover, over TQ postcodes.

A postcode starting TQ7 1 gets the van to you fastest.

The car does not need to move.

A driveway, a lay-by on the way to Tacket Wood, a side street close to Quayside Leisure Centre: our technicians drain it where it stands.

If you are near a boundary, or somewhere hard to describe like the back of Church of the Sacred Heart, ring and ask rather than assuming.

## For Westville people, the short version

Before you tip, read the cap.

AdBlue in the diesel tank regardless? Leave it switched off and call 0333 366 0103; Petrol in Diesel empties it where it stands, throughout Devon.
