---
title: Old Lenton: AdBlue in a Diesel Tank, Explained
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/old-lenton-nottinghamshire/
location: Old Lenton
county: Nottinghamshire
latitude: 52.943930
longitude: -1.178200
service: AdBlue in a Diesel Tank
updated: 2026-10-08
---

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

Keep your motor and ignition off then phone 0333 366 0103 first — the rest can wait when AdBlue is already in your diesel tank.

A drain and a thorough flush, carried out right where the car stands in Old Lenton, is normally what it needs if caught before the motor runs.

Here before the event? In that case what follows covers how it comes about and how to prevent it happening at all.

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

Plenty of newer diesels in Standard Hill, as well as Old Lenton, run on two fluids; the engine gets only your diesel.

AdBlue goes to your exhaust, where it is sprayed into the gas to fresh it, and it lives in a tank of its own.

Separate tanks, separate fillers.

Many of cars share a single flap for both, while some move the AdBlue filler to your boot or under the bonnet.

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

Rarely filled, AdBlue normally comes from a bottle, poured by a driver who has to stop and think which filler it needs.

The mistake lives in that gap.

## How AdBlue in the diesel tank takes place in Old Lenton

Carelessness seldom explains it. What does is three things lining up at once.

Haste follows from the warning. The car warns you as AdBlue runs low, and a dry tank sends it into limp mode — so the top-up gets done in a rush, before work on a driveway off Old Church Street, or heading home in the car park outside White Hart.

The old car's cap is where your hand reaches — yet a rental car, a new car or a company car keeps the fillers somewhere else. That is the second factor: an unfamiliar car.

Nothing stops the tip once it has started, since a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits.

It's a few seconds, whether in Dunkirk or bang in the centre of Old Lenton.

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

Be it a Old Lenton forecourt or a driveway over in Radford, spend a few seconds on these before anything goes in.

- Read the cap instead of going by position: AdBlue ones are regularly blue or marked "AdBlue", and diesel caps normally are not.

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

- Open the flap and check for a label — plenty of motors show which belongs in which inlet right there.

- In your boot or under the bonnet: that is where your filler is if it's not by the diesel cap, and the handbook tells you 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 Nottingham.

## How to top up without AdBlue in the diesel tank

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

- Stop somewhere level, engine off, with time in hand — not hurried on the side of Abbey Bridge.

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

- If both sit under one flap, check the diesel cap is still closed before you lift the bottle — then leave the car on.

- Stop when your tank fills or the bottle runs dry; until then, pour gently using the built-in spout.

- Close the cap, then look once more — confirm the diesel filler stayed closed the whole time. After that, start the car.

Spot at step two or three that it's already gone into your diesel side? So stop just there.

Stage five stays off limits.

## AdBlue in the diesel tank already, in Old Lenton?

Brief order, then. Top of it: your engine remains unstarted.

On plenty of diesels your ignition alone runs the fuel pump, so don't switch the vehicle on.

Thinning it with more diesel fails, because AdBlue sinks to the base rather than mixing — and that's where the fuel is drawn from.

Ask the attendants to help push the car away from the petrol pump if you're on a forecourt — the Sainsbury's, the another forecourt nearby or somewhere else.

If you're on your own driveway around Old Lenton, leave the car where it stands.

Where your motor has been run by now, pull over somewhere safe and switch it off.

On the M1, under 5 miles from Old Lenton, that means the next junction.

About how far did it go? Hopping across Old Lenton is smaller a job than a run of under 3 miles to Nottingham, and so say.

## Our arrival around Old Lenton, and what happens next

Outside Dunkirk Primary and Nursery School, near Priory Church of St Anthony or on your own driveway: wherever your car has stopped, our engineers come to it.

Which liquid was put in, the amount, and whether it ran: our technicians ask because those answers set both work and price.

During the call itself, you hear our price — before dispatch.

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

AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it doesn't wash out on its own — which is why that matters more with AdBlue than with petrol.

A test comes last: before that, fresh diesel goes in, and the fuel filter is cleaned or changed as needed.

Before leaving, we start it and make sure that it's running properly.

Unrun vehicles usually need a half-hour visit after the moment we arrive. The kit is fine on a live filling station, and quiet enough for a driveway late at night.

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

Plenty of insurance policies include misfuelling cover, so it's worth checking yours whilst we're on the way.

## About Old Lenton and where it is

Old Lenton is a suburban area located on the outskirts of Nottingham, situated near the River Trent at an elevation of 28 metres. Old Lenton has a mix of housing types, but is predominantly characterized by terraced homes. Old Lenton is close to nearby places such as Dunkirk and New Lenton, and is part of the larger Nottingham urban area. Old Lenton is also near The Park, a notable local estate.

## AdBlue drains across Nottinghamshire, Old Lenton included

As a residential suburb, Old Lenton has the same vans as nearby places — New Lenton, The Park — right through NG postcodes and the surrounding area beyond.

A postcode starting NG7 2 gets our van to you fastest.

There's no need to shift the car.

The drain happens right there, be it a drive, a street by The Lenton Priory Stone, or a layby on the way to Priory Sculpture Park.

Assuming won't help at the back of Local Life, on a boundary, or somewhere hard to pin down; ring and check.

## The short version for Old Lenton motorists

First, the cap; then, the tip.

Petrol in Diesel drains it where it stands, anywhere across Nottinghamshire, if AdBlue has gone in the diesel tank anyway — and so leave it off then ring 0333 366 0103.
