---
title: AdBlue in a Diesel Tank Potters Marston — Don't Start It
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/potters-marston-leicestershire/
location: Potters Marston
county: Leicestershire
latitude: 52.561930
longitude: -1.269960
service: AdBlue in a Diesel Tank
updated: 2026-10-28
---

# AdBlue in a Diesel Tank in Potters Marston? Don't Start It

AdBlue in your diesel tank? Then leave your engine off — and your ignition too.

Urea mixed in water is all AdBlue is.

It doesn't burn, it does not mix with diesel, and the damage it does starts when the fuel system draws it in.

If the engine hasn't run yet, AdBlue in a diesel tank is usually drained and carefully flushed where the car stands in Potters Marston.

Phone 0333 366 0103 before you do anything else.

## Those opening minutes: AdBlue in your diesel tank around Potters Marston

Do:

- Keys out — then no one can power anything on.

- Hazards on, if moving traffic is anywhere close.

- Which fluid, and about how much volume? Save the bottle or the receipt, and we will know.

- Our van locates you quickest with a postcode starting LE9 3, or simply the name of a street close by, so call from the car.

Do not:

- Not even briefly, and not to shift the car: the motor remains off.

- The ignition stays off: on many diesels, switching it on is enough to run the fuel pump.

- No extra fuel on top. The AdBlue will not mix, so it is wasted.

- Keep the car where it is instead of driving it anywhere, even a short distance along Pingle Lane.

- Draining the tank yourself beside the road is not worth trying.

Rolling the vehicle off the island is a job for attendants to help with, whichever Potters Marston forecourt you're on, the Shell or any other.

On that drive, the vehicle remains exactly where it was left.

## AdBlue in a diesel tank, and what it does there

The engine is not what AdBlue is made for; your exhaust is.

From a dedicated reservoir it is fed straight to the exhaust, cleaning what your engine lets out.

Nothing in it is supposed to pass through a fuel pump, and nothing in a fuel pump is made to handle it.

Fuel mixes; AdBlue, once tipped in, won't. Its behaviour is not at all like diesel's.

It is heavier than diesel, and so it sinks and gathers at the bottom of that tank, which is where the pickup pulls fuel from.

When your pump runs, the AdBlue is top of the list to go through. Until then it sits beneath the diesel, which is how a vehicle topped up in Huncote yesterday and not switched on stays the simple one, provided nobody touches the key.

Two kinds of harm follow from there.

Crystals and corrosion. As the water dries, it leaves urea that hardens in filters and narrow channels; and, since it eats at some metals, every part it touches suffers for as long as it stays inside.

A motor left sitting in Potters Marston with AdBlue already in its lines is worse by the morning; one with AdBlue just in its tank is not.

Diesel protects the high-pressure pump and every injector as it passes; water offers no lubrication, which is a separate kind of harm.

## Why AdBlue in a diesel is commonly more major than petrol

Petrol put into a diesel on Esso's forecourt leaves the fuel watery — that is the whole problem.

No harm comes as long as it sits unused, mixed into your diesel — only once the engine works on it.

AdBlue in a diesel is a fault of the wrong substance altogether.

It can't just be run through, since it doesn't burn.

It doesn't stay mixed, and so it cannot be thinned. And crystals and corrosion do not wash out with the next tank of fuel. That is why the flush counts more with AdBlue than with petrol, and why starting the engine "to see" costs more here than almost anywhere else, whether the car is in Thurlaston or the middle of Potters Marston.

The good news is the same as with petrol.

If the engine has not run, the AdBlue is still in that tank, and the tank is the easiest part of a fuel system to clear, wherever around Leicestershire the vehicle is sitting.

## Potters Marston: how AdBlue ends up in a diesel tank

Nobody means to do it. The AdBlue filler on many cars waits right next to the diesel filler, at times under the same flap, and the two caps can look alike in poor light.

Most of the time it happens with a bottle bought on the way home and poured in on the drive, not at the pump.

Usually, it takes place in one of a couple of familiar ways.

The refill gets rushed outside Manorfield Church of England Primary School, after the dash flashed with a warning while the children were taken in.

A bottle is poured in at the end of the day on a drive just off Huncote Road.

Else, in dim light by The Blue Bell, your car is refilled by someone using that flap the first time.

Rented motors, brand-new motors, company vehicles, or the second vehicle in a family with both fuels: the least known cars get it most.

Keep it off: that is the first response to the same mistake, anywhere around Potters Marston or the remainder of Leicestershire you happen to be.

## Started your engine with AdBlue in your diesel tank in Potters Marston?

If so, the AdBlue is no longer inside the tank.

Via the fuel filter, along the lines, and — given any running — on to the injection pump and each injector: that is where it travels.

You may see the motor running unevenly, smoking, losing power, showing warning lights or cutting out, maybe on the way back from Stoney Stanton Skate Park or halfway across Potters Marston.

Stop when it is safe. Switch off. Leave the vehicle off rather than testing it again.

With each start, more of that is pulled through.

Leave the M69, under a mile from Potters Marston, by the next junction and stop somewhere safe, rather than carrying on.

Every mile pushes the AdBlue further into the system. That's why a hop across Potters Marston to park near St Mary and a drive of under 10 miles towards Leicester are very distinct jobs.

Roughly how far it had come is worth telling us.

Wherever your car came to a halt is where all of it gets done, even with more to rinse out after the motor has been run.

When it is spotted early, lasting damage is very rare.

## What does an AdBlue drain on a diesel involve around Potters Marston?

Anywhere it has come to rest around Potters Marston — a forecourt, a lay-by, a drive, a road by St Michael & All Angels — our van travels to the car.

Which fluid got in, roughly the quantity, and if the engine has been run: our technicians ask before all else, since those decide the work.

The contaminated diesel and the urea come out as one when your tank is emptied, on the spot.

What remains from AdBlue won't wash away unaided, and so the fuel system gets a full flush, which counts much more with urea than for petrol.

Testing your vehicle follows last, once fresh diesel goes in and the filter gets cleaned or, where needed, swapped.

The majority of these jobs are a half-hour job once our engineers turn up, provided your engine has not run.

Our equipment is explosion-proof, and so a live forecourt is no fault, and it is hushed enough for a residential street late at night.

Priming your system with clean diesel comes last.

Whether it's a parking space by Narborough or a driveway around Potters Marston, that is where our technicians fire it up and you head off.

The test before our engineers go is that it runs properly on new diesel.

No workshop is required at any point, with the whole job done on the spot.

Your insurer is likely to want an engineer's report and the VAT invoice — both yours once the job is done.

## About Potters Marston

Potters Marston is a small hamlet in Leicestershire, situated on the riverside at an elevation of 79 metres, with semi-detached housing being the predominant type. Potters Marston lies close to the nearby places of Normanton Turville, Stoney Stanton, and Croft, and is approximately 7.6 miles from Leicester. Potters Marston has a population of around 520 residents, who live in a quiet riverside setting. Potters Marston is also within commuting distance of London, being around 87.6 miles away.

## AdBlue drains across Leicestershire, Potters Marston included

Normanton Turville, Stoney Stanton and Croft are among the places near Potters Marston that the same vans serve, together with most of Leicestershire beyond, throughout the LE postcode area.

Ring and ask instead of guessing if you're by a county line, or somewhere tricky to pin down.

A mobile service fits Potters Marston, a rural hamlet: you have no need to bring the vehicle to us, since we empty it on the spot, on a driveway, a residential street, a car park or a forecourt.

## What AdBlue in a diesel tank costs to put right in Potters Marston

There's no fair single price, since the jobs aren't the same.

Three things move the cost: whether the engine has been running and for how long, how much AdBlue went in, and where the vehicle is. That last one comes down to whether a van can reach it safely, and an open drive is easier than a tight space behind Stoney Stanton Library.

That's why every call from Potters Marston starts with the same three questions, asked before giving a figure, not after: what was put in, how much, and whether it has run.

Once those are answered, a range becomes one firm figure.

You get that quote by phone, before anybody heads out, and you pay on the day, by card or by phone, with nothing upfront.

Many insurance policies include misfuelling cover, so it's worth checking yours whilst we are on the way.

## Potters Marston: still next to the car?

Not touching the car is, right now, the best move you can do.

Keys out, motor off, ignition off.

Ring 0333 366 0103 then tell us it's AdBlue, about how much, and whether it's run. Petrol in Diesel takes it from there, around Potters Marston or anywhere in Leicestershire.
