---
title: AdBlue in a Diesel Tank Colwick? Read This
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/colwick-nottinghamshire/
location: Colwick
county: Nottinghamshire
latitude: 52.956930
longitude: -1.078050
service: AdBlue in a Diesel Tank
updated: 2026-10-19
---

# Colwick: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It?

Leave the engine and ignition off then phone 0333 366 0103 first — reading can wait when AdBlue is already in the diesel tank.

Caught before your engine runs, it's generally a drain and a thorough flush, done where the vehicle is around Colwick.

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 motor need its own filler?

Diesel feeds your motor — but many newer diesels driven about Colwick and Bakers Fields hold a second liquid as well.

Your exhaust, not your engine, is where AdBlue goes: sprayed into the fumes to clean it, from its own tank.

Each tank has its own filler.

Under one flap, side by side: that is the layout on a lot of motors. On others, AdBlue's filler is under the bonnet or in the boot instead.

Diesel gets filled on each filling station visit, again and again.

A driver who has to stop and work out where it goes usually fills the AdBlue side, from a bottle, and far less often.

It is in that gap that the mistake happens.

## Colwick: how AdBlue in the diesel tank happens

Three things tend to come together, and carelessness is rarely one of them.

Hurry follows from the warning. The vehicle warns you as AdBlue runs low, and a dry tank puts the vehicle into limp mode — so the top-up gets done quickly, before work on a drive off Private Road No. 3, or on the way home in the car park outside Inn the Bank.

Unfamiliar cars are next, too. Rentals, new motors and company vehicles place their fillers differently, and the hand goes for the cap used on the old one.

Third, the bottle fits: a diesel filler or AdBlue filler, it goes in just as easily, and once the tip starts, nothing halts it.

Netherfield or the heart of Colwick: it is the same few seconds in both.

## How to tell the AdBlue filler from the diesel one

Be it a Colwick forecourt or a drive over in Gedling, spend a few seconds on these before any is poured in.

- The cap. The AdBlue cap is regularly blue, or marked "AdBlue". Your diesel cap normally is not. Read it instead of going by position.

- On many vehicles, size gives it away: AdBlue gets the smaller filler neck.

- Check inside the fuel flap: plenty of cars have a label there saying which fuel goes where.

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

- The person who drove the car last. On a hire or company car collected from somewhere like the car park at Netherfield, ask before you leave, not when the light comes on.

## AdBlue top-ups that never reach the diesel tank

For the day the light appears — wherever it is in Nottinghamshire — a simple routine to use.

- Switch off once parked — flat ground, engine stopped, and never in a rush beside Private Road No. 1 on the verge.

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

- The two under one flap? Then confirm the cap on your diesel filler stays shut ahead of raising the bottle.

- Using the bottle's own spout, tip slowly — and stop when it is full or the bottle is empty.

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

Find at stage two or three that it has already gone into the diesel side? So stop right there.

Never carry on to step five.

## AdBlue in the diesel tank already, around Colwick?

Do not start the engine: that is where the short order of things starts.

Leave the ignition off as well, because on many diesels it by itself runs the pump.

Filling up with diesel will not dilute it: instead, AdBlue drops to the base of the tank, right where fuel is taken from.

Ask the attendants to help push the car clear of the petrol pump if you're on a forecourt — the Sainsbury's, the Morrisons or somewhere else.

Your own driveway around Colwick is the place it stays.

Already started? Pull over when it is safe, then turn off.

Come off the M1 — under 10 miles out of Colwick — at the first junction.

Mileage matters — a quick hop across Colwick makes a smaller job than heading under 5 miles to Nottingham — so tell us roughly how far it went.

## What happens when our technicians arrive in Colwick

Our van reaches the car wherever it stopped — your own driveway, near Martin Brandon-Bravo O.B.E., or outside Colwick St John the Baptist CofE Primary Academy.

Those replies determine the work and our price, so we ask what was put in, about how much, and whether it has run.

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

Emptying the tank comes next, followed by a full flush of the fuel 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 matters more here than with petrol.

After the fuel filter is cleaned — or renewed, if required — clean diesel is added, and finally the car gets tested.

After that we start it and check it runs smoothly before we go.

Most jobs are finished in roughly half an hour once our technicians get there, as long as the engine has not run — and the pumps our technicians use are fine on a busy forecourt yet quiet at night outside a house.

You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer.

It's worth looking at your policy as the van travels to you: misfuelling cover is included with plenty of policies.

## About Colwick and where it is

Colwick is a suburban area in Nottinghamshire, situated on the River Trent at an elevation of around 24 metres. Colwick lies approximately 3 miles east of Nottingham city centre and is surrounded by nearby places such as Netherfield, Carlton, and Holme Pierrepont. Colwick has a population of around 3436 people and is characterised by predominantly terraced housing. Colwick is located in the East Midlands region, about 107.9 miles north of London.

## AdBlue drains in Colwick and across Nottinghamshire

Being a residential suburb, Colwick has the same vans as surrounding places — Carlton, Holme Pierrepont — right through NG postcodes and the surrounding area beyond.

Our van reaches you fastest with a postcode starting NG4 2.

The car does not need to move.

A driveway, a lay-by on the way to The Meadow Nature Reserve, a side street close to Netherfield Methodist Church: we drain the car where it is.

Awkward to pin down, like the back of TeamSport Nottingham? By a county line? Checking beats assuming, so phone.

## For Colwick people, the short version

Tip nothing until you've read the cap.

AdBlue in your diesel tank regardless? Leave the car switched off and ring 0333 366 0103; Petrol in Diesel empties it on the spot, throughout Nottinghamshire.
