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Petrol in Diesel

0333 366 0103

AdBlue in a Diesel Tank in Dwygyfylchi: How It Happens and How to Stop It

Pause here for a moment if your diesel tank already holds AdBlue in it: ignition off, engine off, then call 0333 366 0103. Around Dwygyfylchi, finding it before the motor runs normally means a drain and a full flush where it stands. Nothing happened yet? Further down, the rest of the page covers the reasons it takes place and the how to avoid it for good.

Call 0333 366 0103

Why does AdBlue in a diesel motor need its own filler?

Diesel goes to the motor — but plenty of modern diesels driven about Dwygyfylchi and Penmaenan hold a second liquid as well. The exhaust, not the motor, is where AdBlue goes: dosed into the gas to clean them, from its own tank.

Every tank comes with one filler of its own. Plenty of motors have a single flap for the two, while others move the AdBlue filler to the boot or under the bonnet. At the pump, the diesel side gets filled all the time. Far less commonly, the AdBlue side is filled — mostly from a bottle, by someone thinking about where it goes. Mistakes happen in the gap between them.

Dwygyfylchi: how AdBlue in your diesel tank happens

Three things tend to line up, and carelessness is seldom one of them.

On a driveway off Ysguborwen Road before work, or in the car park outside The Gladstone on the way home: that is where the hurried top-up happens. Why the rush? As AdBlue runs low the car tells you, and once it's empty, limp mode follows.

New-to-you motors are second, as well. Rentals, new cars and company motors put their fillers differently, and habit goes for the cap it used on the old one.

And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the pour after it has started. St Gwynans or the middle of Dwygyfylchi: it is the same few seconds either way.

Flushing a diesel fuel system after AdBlue, Dwygyfylchi

Telling the AdBlue filler from the diesel filler

Be it a Dwygyfylchi forecourt or a driveway over in Llechwedd, spend a few seconds over these before anything is poured in.

  • Blue and lettering: an AdBlue cap is commonly blue, or says "AdBlue", where a diesel cap usually doesn't. Trust the cap, not its position.
  • Look at the size: the smaller filler neck is, on many cars, the AdBlue one.
  • A label inside the fuel flap often says which fuel goes where, on plenty of motors. Look for it.
  • Cannot see it next to the diesel filler? Then look below the bonnet or in the boot — the handbook says which.
  • The person who drove it last. On a hire or company car picked up from somewhere like the car park outside Penmaenmawr, ask before you leave, not when the light comes on.

How to top up without AdBlue in the diesel tank

When the light comes on, anywhere in Conwy, use this routine.

  • Park then switch off. Not on a slope, not with the motor running, and not in a rush on the side of Cae Gwynan.
  • Locate the AdBlue filler, read the cap, and speak the word "AdBlue" aloud while you unscrew it. It seems daft. It does the trick.
  • Both under one flap? Then confirm the cap on your diesel filler stays closed ahead of lifting the bottle.
  • Using the bottle's own spout, tip slowly — and stop when it is full or the bottle is empty.
  • Only then, start your car: close the cap, check a second time, and make sure the diesel cap was never opened.

Find during the second or third stage that the bottle went in the diesel tank? That is where you stop. Never go on to stage five.

AdBlue in your diesel tank already, around Dwygyfylchi?

Brief list, then. First: your motor stays unstarted. Don't switch the ignition on; on plenty of diesels that alone runs the fuel pump. Diluting it with extra diesel won't work, since AdBlue sinks to the bottom rather than blending — and that's where your fuel is sucked from.

If you're at a forecourt, whether it is the Shell or the Tesco, ask the staff to help push your car away from the petrol pump. Leave it where it is if you're on your own drive around Dwygyfylchi.

Where your motor has run by now, pull over safely then turn the vehicle off. On the Moreton Spur, under 50 miles from Dwygyfylchi, that means the next exit. A short hop across Dwygyfylchi is a smaller job than a run towards Bangor, under 15 miles away, and so tell us about how far it went.

Our arrival around Dwygyfylchi, and what occurs next

Anywhere the car has stopped, be it by the local primary school, near Penmaenmawr Golf Club or at home, our van travels to it. What fluid went in, the quantity, and whether it ran: we ask because those answers decide both work and quote. You hear that price by phone, before anybody sets off.

Draining the tank comes next, followed by a full flush of the system. Much more than with petrol, it counts with AdBlue: the crystals build up, some metals corrode, and none of it clears away on its own, however long it sits. Testing is last: before that, fresh diesel is added, and your filter is flushed or changed if necessary. Before leaving, we fire it up and confirm that it's running correctly.

Using pumps fine on a busy forecourt and quiet enough to use outside a house at night, most jobs where the engine hasn't run need roughly half an hour after we arrive. Paying is on the day, not upfront, and you receive the paperwork your insurer wants: an engineer's report and a VAT invoice. Misfuelling cover is part of many insurance policies — so use the wait to look at yours.

About Dwygyfylchi and where it is

Dwygyfylchi is a coastal village in Conwy, Wales, situated near the towns of Penmaenmawr and Bangor. Dwygyfylchi lies at an elevation of 29 metres, close to the Irish Sea, and is surrounded by nearby places such as St Gwynans and Capelulo. Dwygyfylchi has a population of around 1403 people, predominantly living in semi-detached housing. Dwygyfylchi is located approximately 200.5 miles from London, but is more closely linked to the nearby city of Bangor, which is 10.2 miles away.

AdBlue drains around Dwygyfylchi and across Conwy

As a coastal village, Dwygyfylchi has the same vans as nearby places — Capelulo, Penmaenmawr — all the way across LL postcodes and the wider area beyond. Give a postcode that starts LL34 6, and the van gets there quickest.

Shifting the car is not needed. The drain takes place on the spot, whether a drive, a road by St. Seiriol's Church, or a lay-by towards Coed Pendyffryn. Ring and ask instead of assuming if you're close to a border, or somewhere hard to explain, like the back of Penmaenmawr Historical Society & Museum.

In short, for Dwygyfylchi motorists

Read the cap before you tip. Petrol in Diesel drains it on the spot, anywhere around Conwy, if AdBlue has gone in your diesel tank all the same — and so leave it off then ring 0333 366 0103.

Call 0333 366 0103