AdBlue in a Diesel Tank in Merlins Bridge: Why It Occurs and How to Prevent It
Stop here for a moment when your diesel tank already has AdBlue in it: ignition off, engine off, then ring 0333 366 0103. A drain plus a thorough flush, done right where the car sits in Merlins Bridge, is normally what it takes when caught before your motor runs. Nothing happened yet? Further down, the rest of the page explains the reasons it happens and the ways to prevent it for good.
Why does AdBlue in a diesel vehicle need its own filler?
Diesel feeds the engine — yet many newer diesels seen round Merlins Bridge and Skerryford hold a second fluid as well. Stored in a tank of its own, AdBlue is sprayed into the exhaust gas to clean it.
There's a filler for each tank. On a lot of vehicles the two sit side by side under the same flap; on others the AdBlue filler is in your boot or under the bonnet. At the petrol pump, the diesel side gets filled constantly. The AdBlue side is topped up far less regularly, normally from a bottle, and normally by a person who has to stop and think where it goes. It's in the gap that the slip happens.
Merlins Bridge: how AdBlue in your diesel tank happens
It is seldom carelessness. Three things tend to line up.
Hurry comes from the warning. Your car warns you as AdBlue runs low, and an empty tank puts it into limp mode — so the top-up happens in a rush, before work on a drive off St. Issell's Avenue, or on the way home in the car park at Bristol Trader.
The old car's cap is where the hand goes — yet a hire car, a new motor or a company car keeps the fillers elsewhere. That's a second thing: a strange car.
A spouted bottle meets no resistance at a diesel filler no more than at an AdBlue one. And so the pour, once begun, keeps on. The same few seconds settle it, in the middle of Merlins Bridge or out in The Marsh.
Which filler is for AdBlue, and which for diesel?
Whether a Merlins Bridge forecourt or a drive out in Lower Freystrop, spend a couple of seconds on these before anything is poured in.
- Colour and marking: an AdBlue cap is frequently blue, or says "AdBlue", where a diesel cap normally doesn't. Trust the cap, not its position.
- The size. On plenty of vehicles the AdBlue filler neck is the smaller of the two.
- The flap. Look inside the fuel flap for a label. Plenty of vehicles say there which fuel goes where.
- In your boot or under the bonnet: that's where your filler sits if it's not by your diesel cap, and the handbook tells you which.
- Check with the person who drove it last — before you leave, not when the light comes on — when you pick up a hire or company car from somewhere like the car park at Haverfordwest.
Topping up AdBlue without it reaching the diesel tank
The day the light comes on, anywhere in Pembrokeshire, use this routine.
- Stop somewhere level, engine off, with time to spare — never hurried on the side of Pembroke Road.
- Silly as it sounds, speaking "AdBlue" out loud as you unscrew the cap does the trick — after you've located the filler and read it.
- Both under a single flap? So confirm the lid on your diesel filler is still closed before lifting the bottle.
- Gently is best, through the bottle's own spout, till it's full or the bottle is empty.
- Before starting the car, shut the cap and look again that your diesel cap was never opened off.
Stop there if you find, at step two or three, that you've already poured into your diesel side. Don't go on to stage five.
Already put AdBlue in your diesel tank in Merlins Bridge?
The short order of things, starting with not starting your motor. On many diesels the ignition alone runs the fuel pump, and so don't switch it on. Filling up with diesel will not thin it: rather than mixing, AdBlue sinks to the bottom of that tank, right where fuel is drawn from.
Ask the attendants to help roll the car clear of the petrol pump if you're at a forecourt — the Tesco, the Morrisons or anywhere else. Your own drive around Merlins Bridge is where it should stay.
Already started? Stop once it is sensible, then switch off. Merlins Bridge sits under 50 miles from the M4; there, use the next exit. Distance counts — a short hop across Merlins Bridge is a smaller job than heading under 15 miles to St Davids — so tell us roughly how far it went.
What happens when our technicians turn up in Merlins Bridge
By the local primary school, near Merlins Bridge Village Hall or on your own driveway: wherever your car has stopped, our technicians come to it. What liquid was put in, the amount, and whether it ran: our engineers ask since those replies set the work and price. On the phone call itself, you hear our quote — ahead of dispatch.
The system is then cleaned thoroughly, after your tank is emptied. Much more than with petrol, it matters with AdBlue: the crystals form, some metals are attacked, and nothing washes away unaided, no matter how long it sits. Testing is last: before that, fresh diesel goes in, and your filter is cleaned or replaced if necessary. After that our technicians fire it up and check it runs smoothly before we go.
Most jobs are finished in about half an hour after our technicians get there, as long as the engine hasn't run — and the pumps we use are fine on a busy forecourt yet quiet at night beside a house. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Before we get there, have a look at your insurance documents; many carry cover for misfuelling.
About Merlins Bridge and where it is
Merlins Bridge is a coastal village in Pembrokeshire, situated near the town of Haverfordwest and approximately 13 miles from St Davids. Merlins Bridge lies at an elevation of 32 metres, with the village being close to the nearby settlements of The Marsh and Albert Town. Merlins Bridge has a mix of housing types, but semi-detached homes are predominant in the area. Merlins Bridge is located in a scenic part of Wales, with the village being around 209 miles west of London.
AdBlue drains in Merlins Bridge and across Pembrokeshire
Merlins Bridge is a coastal village, and the teams that cover it also work the towns near it, Albert Town and Haverfordwest among them, across the SA postcode area. A postcode starting SA61 1 gets our van to you fastest.
The vehicle does not need to shift. Our engineers drain it where it is — a side street close to Saint David and Saint Patrick, a lay-by on the way to Rifleman Field, a drive. If you're near a border, or somewhere hard to explain like the back of Haverfordwest Leisure Centre, ring and ask instead of guessing.
For Merlins Bridge drivers, the short version
Read the cap before you tip. If AdBlue has gone in the diesel tank regardless, leave it off and phone 0333 366 0103. Petrol in Diesel drains it where it stands, anywhere in Pembrokeshire.