---
title: Coxside: AdBlue in a Diesel Tank, What Next
canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/coxside-devon/
location: Coxside
county: Devon
latitude: 50.366700
longitude: -4.126680
service: AdBlue in a Diesel Tank
updated: 2026-10-24
---

# AdBlue in the Diesel Tank in Coxside, and What to Do Next

What to do about AdBlue in a diesel tank depends on one thing more than any other: if the motor has been run since it went in.

Anywhere your car stands — Prince Rock, Coxside — don't run a motor that hasn't run yet.

Keep nothing on, ring 0333 366 0103, then count on a thorough flush plus a drain, done just where your car stands around Coxside.

Where the engine has run, pull in somewhere safe straight away, then turn the vehicle off.

It is a bigger job, yet stage one doesn't change.

Anywhere in Devon it took place, one of the situations below matches yours.

## At the petrol pump in Coxside: AdBlue in a diesel

The cap you opened was the wrong one — and you only spot it as you are standing at the petrol pump, bottle or the nozzle in your hand.

Anywhere in Coxside, then — Asda, another forecourt nearby, or anywhere else close by.

Meaning? Spotting it on the forecourt is as good as it can be.

Still in your tank, and no fuel pulled onwards: that is where the AdBlue is.

What to do: don't get back in and fire it up to clear the pump.

Ask the attendants to help you push your car into a parking spot, keep your receipt or the bottle, then phone us from the forecourt.

Our equipment is explosion-proof and fine on a live forecourt, and so a vehicle that can't be pushed away is cleared where it is at the pump.

## AdBlue in the diesel tank at home around Coxside

Days had gone by with the warning light on.

A bottle from the garage, tipped in at the drive — and it's only at the recycling that the cap caught your eye.

Homes just off Commercial Ope get hit as much as everywhere else.

Put simply: if the car hasn't moved since, it is almost equal to spotting it at the pump.

As it is reluctant to blend, AdBlue settles to the base inside that tank and stays. One night standing alters nothing.

Next: stop any early-morning move by keeping the keys in the house, then phone us.

Cattedown or Coxside: wherever your drive sits, that's where it is drained.

Even at night, our pumps are quiet enough for a residential street.

## AdBlue in a diesel and already driving around Coxside?

Rough running, smoke, falling power or a glowing dashboard started a short way after the fill.

Perhaps it was on Commercial Road, perhaps on the way out towards Plymouth, under a mile away.

In short: the AdBlue has been sucked through the fuel system.

Distance sets how far it goes: filter and lines first, then the high-pressure pump and each injector.

Each mile and each restart takes it further.

What to do: pull over where it's safe to do so and switch off.

On the M5, under 50 miles from Coxside, that means the next exit, not the services further on.

Restarting it to test gets nothing — AdBlue doesn't clear on its own.

Tell us know the distance driven as you ring.

## Hire, lease or company car with AdBlue in the wrong tank

Seven days back, the car was unknown to you.

Unbeknown to you, the AdBlue and diesel fillers sit side by side here — unlike your own car, which has none or keeps it elsewhere.

Anyone, anywhere across Devon, could make the same.

What it means: the same as the situations above, depending on whether it's run, with one more stage.

The owner often has to approve the work, under many rental and company contracts.

Settling it before the van arrives is faster, and so ring the rental company or your fleet manager, and then us.

Leave the vehicle switched off while the answer arrives, whether you're parked outside Plymouth or near Vue.

## Coxside: unsure if it was AdBlue in your diesel tank?

Truthfully, the only answer may be that you think it did.

A slight ammonia smell hangs around the filler, the bottle seems too light, and which cap came off is a blur.

Maybe it happened in a hurry at the school gates at Holy Cross Catholic Primary School, or on a friend's drive in St Judes.

Put simply: a spill near your filler does the engine unharmed.

If it's inside the diesel tank, though, it does.

If there is AdBlue in the tank, firing up your car would draw it in, and it wouldn't tell you which either.

What to do: treat it as if it got in. Don't fire it up.

Inspecting a tank that proves free of AdBlue is better than emptying one once it's been run — so phone then describe to us what you saw.

## What every AdBlue drain in Coxside has in common

Whatever the situation, a single start applies.

We come to the car, whether it's at a forecourt, a driveway, the car park at The Fareham inn or a side street close to National Marine Aquarium, and ask three things: what got in, roughly how much, and if your motor has run.

On the phone, ahead of dispatch, you are told our price, and those replies decide the job too.

Then that tank is emptied and the system rinsed thoroughly, which counts more with AdBlue than with petrol: AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it doesn't rinse out on its own.

Your filter is flushed, or replaced where it needs to be; clean diesel goes in; and the vehicle is tested.

Never started? In that case about half an hour on site covers most jobs.

The final step is starting the car.

Before our technicians go, it's tested to be sure it runs properly on clean diesel.

Permanent damage is very unusual when it is spotted quickly, and the entire job is done where the vehicle is.

For your insurer: the engineer's report and the VAT invoice. For you: payment on the day, no money upfront.

Many insurance policies include misfuelling cover, and so it is worth checking yours whilst we're on the way.

## About Coxside itself

Coxside is a coastal suburban area in Devon, situated near the city of Plymouth and adjacent to the waterfront. Coxside sits at a low elevation of around 7 metres, with its terraced housing stock reflecting the area's historical development. Coxside is close to nearby places such as Cattedown, Mount Batten, and the historic Barbican area, and is part of the larger Plymouth urban landscape.

## AdBlue drains across Devon, Coxside included

As a residential suburb, Coxside has the same vans as the nearby towns — Barbican, Mount Batten — all the way through PL postcodes.

A postcode starting PL4 0 is the quickest way to tell us where you are.

Parked heading to Astor Playing Fields, or right in the heart of Coxside, the car remains put — there's no need to shift it anywhere.

The drain is done right there.

Phone and ask rather than guess if you're close to East End Community Centre, near a border, or somewhere tricky to pin down.

## In one line: your situation

If it hasn't run, phone and keep it off.

Started already? Pull over, turn off, ring. Petrol in Diesel takes over the remainder whatever case, in Coxside and Devon, on 0333 366 0103.
