---
title: AdBlue in a Diesel Tank Snedshill? Read This
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/snedshill-shropshire/
location: Snedshill
county: Shropshire
latitude: 52.685970
longitude: -2.439020
service: AdBlue in a Diesel Tank
updated: 2026-10-10
---

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

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

Caught before the motor runs, it is generally a drain and a thorough flush, done where the vehicle is around Snedshill.

Reading before the event? In that case the rest covers how it comes about and what to stop it ever happening.

## AdBlue in a diesel vehicle: two tanks, two fillers

Diesel goes to the engine — yet plenty of newer diesels seen round Snedshill and Priorslee hold a second liquid as well.

Stored in a tank of its own, AdBlue is fed into the exhaust gas to clean it.

There is a filler on each tank.

On a lot of vehicles the two sit side by side under the same flap; on others the AdBlue filler is in the boot or under the bonnet.

The diesel side is filled at the pump all the time.

Rarely filled, AdBlue usually comes out of a bottle, poured by someone who must stop and think which cap to use.

Mistakes happen in that gap between the two.

## How AdBlue in your diesel tank happens in Snedshill

Rarely is it carelessness: usually three things line up.

Haste comes from the warning. Your car warns you as AdBlue runs low, and an empty tank sends it into limp mode — so the top-up happens quickly, before work on a drive off Holyhead Road, or on the way home in the car park at Flaming Grill.

Next, your hand reaches for the cap it would have used on the old car — since a hire car, a new car or a company car puts 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 pour once it has started.

Hollinswood or the middle of Snedshill: it takes the same few seconds either way.

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

A few seconds is all the checks take — so check them before you tip anything, on a driveway in Ketley Bank or a forecourt in Snedshill.

- The cap. The AdBlue cap is regularly blue, or marked "AdBlue". Your diesel cap usually is not. Read it rather than going by position.

- On plenty of motors, the size tells: AdBlue has the smaller filler neck.

- The flap. Look inside your fuel flap for a label. Plenty of cars say there which fuel goes where.

- The handbook shows where it is if your filler isn't next to the diesel cap: your boot, or under the bonnet.

- Picking up a hire or company car, perhaps at the car park outside Telford Central? Check with the person who drove it last before leaving, rather than when the light comes on.

## Topping up AdBlue without it reaching the diesel tank

The day the light comes on, anywhere in Shropshire, follow this routine.

- Not in a rush on the side of Snedshill Way, not on a slope, not with the engine running: park then switch off first.

- Daft as it sounds, speaking "AdBlue" aloud as you unscrew the cap does the trick — once you've located your filler and read the cap.

- The two behind a single flap? Then make sure the cap on the diesel filler is still closed ahead of lifting the bottle.

- Stop once your tank fills or the bottle runs dry; before that, tip gently through the built-in spout.

- Only after that, start the car: close the cap, check again, and make sure the diesel cap was never opened.

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

Don't go on to stage five.

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

The short order of things, starting with no starting the engine.

The fuel pump runs on many diesels as soon as the ignition goes on — and so keep it off.

Topping up with diesel won't thin it: instead, AdBlue sinks to the base of the tank, right where fuel is taken from.

If you're at a forecourt, whether it's the Sainsbury's or the Asda, ask the attendants to help push your car away from the petrol pump.

Your own driveway in Snedshill is where it stays.

Already started? Pull over when it's safe, then switch off.

The next exit means where to leave when you are on the M54, under a mile from Snedshill.

About how far did it go? Hopping across Snedshill is less a job than a run of under 15 miles to Wolverhampton, so say.

## Our arrival around Snedshill, and what takes place next

We come to your car wherever it has stopped, whether that's outside St George's Church of England Primary School, close to St Peter or on your own drive.

The replies decide this work and the quote, and so we ask what was put in, roughly how much, and whether it has run.

During the phone call itself, you hear our quote — ahead of dispatch.

Emptying your tank comes next, then a thorough flush of your system.

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

A test is at the end: before that, clean diesel is added, and your filter is flushed or changed as needed.

Before we go, our engineers fire it up and confirm that it is running smoothly.

Most jobs are done in about half an hour once our technicians arrive, provided your engine hasn't run — and the pumps our engineers use are safe on a live forecourt yet quiet at night outside a house.

No money in advance; you settle up on the day. At the end, a VAT invoice and the report from the engineer are handed to you for your insurer.

Misfuelling cover is part of many insurance policies — and so use the wait to check yours.

## About Snedshill, for a moment

Snedshill is a suburban area in Shropshire, situated inland at an elevation of around 168 metres, with semi-detached housing being the predominant type of accommodation. Snedshill lies approximately 14.7 miles from Wolverhampton and 127.5 miles from London, placing it in the wider West Midlands region. Snedshill is close to nearby places such as Hollinswood and St Georges, and is a short distance from the Town Centre. Snedshill has a population of around 3047 residents.

## AdBlue drains across Shropshire, Snedshill included

Throughout TF postcodes, our vans covering Snedshill — a residential suburb — work the surrounding places too, Town Centre and St Georges included.

Quickest of all: quote a TF2 9 postcode to the van.

No need to shift the car.

Draining takes place right there, be it a driveway, a road by a street just off the centre, or a lay-by towards Grove Park.

Guessing won't help behind Reassure History Sign, close to a border, or anywhere hard to describe; ring and ask.

## The short version for Snedshill people

Before you tip, read the cap.

Petrol in Diesel drains it where it stands, anywhere across Shropshire, if AdBlue has gone in your diesel tank regardless — and so leave the vehicle off then phone 0333 366 0103.
