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Petrol in Diesel

0333 366 0103

Upper Brynamman: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It?

Leave your engine and ignition off then ring 0333 366 0103 first — reading can wait if AdBlue is already in your diesel tank. A drain plus a full flush, carried out right where your car stands around Upper Brynamman, is usually what it takes when caught before your engine runs. Here before the event? Then what follows covers why it comes about and how to stop it happening at all.

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AdBlue in a diesel motor, and its separate tank

Many current diesels on the roads round Upper Brynamman and Gwaun-Leision carry two liquids, not one. Diesel goes to your engine. Kept in a tank of its own, AdBlue is sprayed into the exhaust gas and cleans it.

There is a filler on every tank. Other cars keep the AdBlue filler in the boot or under the bonnet; a lot of others have the two together under one flap. Diesel goes in at every forecourt call-out, week in, week out. Seldom filled, AdBlue usually comes from a bottle, tipped by someone who must stop and think which filler to use. It is in the gap that the mistake happens.

How AdBlue in the diesel tank happens around Upper Brynamman

It is hardly ever carelessness. Three things tend to line up.

To start with, the warning. Low AdBlue triggers a message from your car, and letting it run out leads to limp mode — so a rushed top-up, maybe before work off Arfryn, or outside the pub in the village on the way home after work.

Then the vehicle is strange. A hire car, a new vehicle or a company car puts the fillers where your last one didn't, and your hand gets to for the cap it would have used on the old one.

Lastly, the spout goes in: diesel filler or AdBlue filler, it goes in as easily, and after the pour starts, no part stops it. Whether it occurs in Brynamman or the middle of Upper Brynamman, it is the same few seconds.

Flushing a diesel fuel system after AdBlue, Upper Brynamman

Which filler is for AdBlue, and which for diesel?

Check these first, at a forecourt in Upper Brynamman or a drive out in Tairgwaith. A few seconds, that's all.

  • Blue and lettering: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap usually doesn't. Go by the cap, not where it sits.
  • On many motors, the size gives it away: AdBlue gets the smaller filler neck.
  • Open the filler flap and check for a label — many motors mark what goes in each inlet just there.
  • Can't see it next to the diesel inlet? In that case look beneath the bonnet or in the boot — the owner's manual will say where.
  • Whoever had it before knows. Ask when you collect a hire car or fleet car — at Ammanford's car park, say — not once the light appears.

How to top up without AdBlue in your diesel tank

The day the light goes on, anywhere around Carmarthenshire, follow this routine.

  • Stop on level, engine off, with time in hand — not rushing on the side of Mountain Road.
  • Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it does the trick.
  • The two under a single flap? Then confirm the cap on the diesel side stays closed ahead of raising the bottle.
  • Stop when the tank is topped up or the bottle is empty; before that, pour gently using its built-in spout.
  • Only after that, start your car: close the cap, check again, and make sure your diesel cap was never opened.

Discover during the second or third step that AdBlue went in the diesel tank? That is where you stop. Leave out stage five altogether.

AdBlue in the diesel tank already, around Upper Brynamman?

Then the order of things is short. Don't start your motor. On many diesels the ignition alone runs the fuel pump, so do not switch it on. Thinning it with extra diesel fails, since AdBlue sinks to the bottom instead of blending — and that is where the fuel is sucked from.

If you are at a forecourt, whether it is the Texaco or the Tout's, ask the attendants to help push the vehicle clear of the petrol pump. If you're on your own driveway around Upper Brynamman, leave it where it stands.

Already started? Stop once it is safe, then turn off. Leave the M4 — under 10 miles out of Upper Brynamman — at the next exit. Distance matters — a quick hop across Upper Brynamman makes a smaller job than heading under 15 miles to Swansea — so tell us about how far it went.

Our arrival in Upper Brynamman, and what occurs next

The van comes to the car anywhere it stopped — your own driveway, near Brynamman Public Hall Cinema, or outside the local primary school. Both the work and our price rest on three replies — what fluid, what amount, and if it's run — so our engineers ask. No one sets off until you've had the quote over the phone.

Then your tank is drained and your system cleaned thoroughly. Much more than with petrol, it matters with AdBlue: the crystals build up, certain metals corrode, and nothing washes away on its own, no matter how long it sits. Once your filter is flushed — or replaced, where needed — fresh diesel is added, and then the vehicle gets tested. Your engine is started next and tested to confirm it runs smoothly, all before we leave.

Most jobs are finished in roughly half an hour once our engineers get there, provided the engine hasn't run — and the pumps our engineers use are fine on a live forecourt and quiet after dark outside a house. 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, and so it's worth checking yours whilst we're on the way.

About Upper Brynamman, briefly

Upper Brynamman is a suburban area situated on the banks of the River Amman in Carmarthenshire, with a mix of semi-detached housing and a population of around 1193 residents. Upper Brynamman sits at an elevation of 215 metres, overlooking the surrounding countryside and the nearby communities of Brynamman and Lower Brynamman. Upper Brynamman is located near the town of Rhosaman and is approximately 14 miles from Swansea, the nearest city. Upper Brynamman's riverside setting provides a scenic backdrop to the area.

AdBlue drains in Upper Brynamman and across Carmarthenshire

As a residential suburb, Upper Brynamman has the same vans as surrounding places — Lower Brynamman, Rhosaman — all the way through SA postcodes and the surrounding area beyond. The van gets to you fastest with a postcode starting SA18 1.

Your car remains where it is. A driveway, a lay-by on the way to Parc Brynaman, a side street near Siloam Capel y Bedyddwya: our technicians drain the car where it is. If you are close to a border, or somewhere hard to explain like the back of War Memorial, ring and ask instead of assuming.

In short, for Upper Brynamman people

Tip no AdBlue until you've read the cap. Even so AdBlue in your diesel tank? Petrol in Diesel will empty it wherever it is, anywhere around Carmarthenshire: keep the vehicle off and ring 0333 366 0103.

Call 0333 366 0103