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Petrol in Diesel

0333 366 0103

Avoiding AdBlue in a Diesel Tank in Oakeley Square: Why It Happens

AdBlue already in the diesel tank? Then put this page down a moment, leave the ignition and engine off, and phone 0333 366 0103. Usually, when your motor has not turned, it's drained and fully flushed where the car is around Oakeley Square. The remainder of this page explains why it takes place and how to ensure it doesn't — handy if you are reading before it has happened.

Call 0333 366 0103

Two fillers, two tanks: AdBlue in a diesel car

Diesel feeds the engine — but many modern diesels driven round Oakeley Square and Blaenau Ffestiniog carry another liquid too. AdBlue goes to the exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own.

Every tank has a filler of its own. Many of motors have a single flap for both, whereas some move the AdBlue filler to your boot or under the bonnet. Diesel gets filled at each filling station visit, again and again. Someone who has to stop and work out where it goes usually tops up the AdBlue side, from a bottle, and far less commonly. It is in that gap that the mistake lives.

How does AdBlue in your diesel tank take place in Oakeley Square?

It's hardly ever carelessness. Three things tend to line up.

First, the warning. Low AdBlue triggers a warning from the car, and letting it run dry means limp mode — so a rushed top-up, perhaps before work off Sgwar Oakeley, perhaps at King's Head on the way home that evening.

New-to-you vehicles are next, too. Rentals, new motors and company cars put their fillers differently, and the hand 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 tip after it has started. Glanypwll or the middle of Oakeley Square: it is the same few seconds either way.

Flushing a diesel fuel system after AdBlue, Oakeley Square

Telling the AdBlue filler from the diesel filler

A couple of seconds is all these take — so run through them before you pour anything, on a drive in Maen-Offeren or a forecourt in Oakeley Square.

  • Colour and marking: an AdBlue cap is commonly blue, or says "AdBlue", where a diesel cap normally doesn't. Trust the cap, not its position.
  • On many motors, the size gives it away: AdBlue has the smaller filler neck.
  • Look inside your fuel flap: plenty of cars carry a label there saying which fuel goes where.
  • The handbook. If your filler isn't by your diesel cap, it is in the boot or under the bonnet, and the handbook says which.
  • Collecting a hire or company car, perhaps at the car park outside Blaenau Ffestiniog? Check with the person who drove it last before you set off, rather than once the light goes on.

AdBlue top-ups that never reach your diesel tank

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

  • Not in a rush on the side of Ffordd Glanypwll, not on a slope, not with the motor running: park then switch off first.
  • Say "AdBlue" out loud as you unscrew the cap, once finding the AdBlue filler and reading it. Silly, yes, but it works.
  • Leave your diesel cap on. If both sit under one flap, check your diesel cap is still closed before you lift the bottle.
  • Using the bottle's own spout, pour slowly — and stop when it's full or the bottle is empty.
  • Only after that, start the car: close the cap, check a second time, and make sure your diesel cap was never opened.

Stop there if you find, at step two or three, that you've already poured into the diesel side. Don't carry on to stage five.

Oakeley Square: already put AdBlue in your diesel tank?

Short order, then. Top of that: your motor remains unstarted. Don't switch the ignition on; on plenty of diesels that alone runs the fuel pump. Thinning it with more diesel won't work, since AdBlue settles to the bottom instead of mixing — and that's where the fuel is drawn from.

At a forecourt — the nearest petrol station, another forecourt nearby or another — the attendants will usually help push your car away, if you ask. Leave it where it is if you're on your own drive in Oakeley Square.

Where the engine has run by now, stop somewhere safe and turn the vehicle off. Oakeley Square sits under 50 miles from the Moreton Spur; on it, take the first junction. Tell us roughly how far it went: a run towards Bangor, under 25 miles away, is a bigger job than a short hop across Oakeley Square.

Oakeley Square: what takes place when our technicians turn up

Wherever the car came to rest, whether by the local primary school, beside Clwb Rygbi or at home, the van comes to it. Both the work and the price rest on three replies — which fluid, what amount, and if it's run — so our technicians ask. Nobody sets off before you have had our quote by phone.

Then that tank is drained and your system cleaned thoroughly. Not like petrol, AdBlue forms crystals and eats at certain fuel-system metals, and neither washes away by itself. Hence it matters more. The filter cleaned or, if needed, swapped; fresh diesel in; and then a check of the car. Before we go, we fire it up and make sure that it is running smoothly.

Unrun cars usually need a half-hour visit after arrival. The equipment is safe on a live forecourt, and hushed enough for a driveway late at night. Payment is on the day, not upfront, and you are given the documents an insurer wants: an engineer report and a VAT invoice. Misfuelling cover is part of many insurance policies — and so use the wait to check yours.

About Oakeley Square

Oakeley Square is a suburban area situated on the riverside in Gwynedd, Wales, with a mix of terraced housing and a population of around 1140 residents. Oakeley Square sits at an elevation of 200 metres, overlooking the surrounding landscape. Oakeley Square is located near other small communities such as Glanypwll, Rhiwbryfdir, and Tanygrisiau, and is approximately 17.9 miles from the city of Bangor.

Oakeley Square and Gwynedd: AdBlue drains across the area

As a residential suburb, Oakeley Square has the same vans as surrounding areas — Rhiwbryfdir, Tanygrisiau — right through LL postcodes and the wider area beyond. A postcode starting LL41 3 gets the van to you fastest.

The car does not need to shift. Wherever it sits — beside Eglwys Dewi Sant, on a layby heading to the green space at the edge of the village, on a drive — that is where it gets emptied. Assuming doesn't help at the back of St. David's Church Hall, on a border, or anywhere hard to pin down; ring and check.

The short version for Oakeley Square drivers

Always, the cap; after that, the tip. AdBlue in the diesel tank regardless? Leave it off and call 0333 366 0103; Petrol in Diesel drains it on the spot, throughout Gwynedd.

Call 0333 366 0103