Preventing AdBlue in a Diesel Tank in Gwehelog Common: Why It Happens
AdBlue already in the diesel tank? In that case set this page down a moment, keep the ignition and motor off, then call 0333 366 0103. Usually, if the motor hasn't run, it is emptied and fully purged where the car sits in Gwehelog Common. Not happened yet? Below, the rest of the page covers the why it takes place and the how to avoid it altogether.
AdBlue in a diesel vehicle, and its separate tank
Plenty of newer diesels in Twyn-y-Sheriff, like those in Gwehelog Common, carry on two liquids; the engine gets only your diesel. AdBlue goes to your exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own.
Each tank has its own filler. Many of motors share a single flap for the two, whereas others put the AdBlue filler to your boot or under the bonnet. The diesel side is fuelled at the petrol pump all the time. The AdBlue side is filled far less commonly, usually from a bottle, and normally by a person who has to stop and think where it goes. It is in the gap that the slip lives.
How AdBlue in the diesel tank occurs around Gwehelog Common
It's hardly ever carelessness. Three things tend to line up.
On a drive off Wainfield Lane before work, or in the car park outside The Hall Inn heading home: that's where the hurried top-up happens. What is the reason for the rush? As AdBlue gets low the vehicle tells you, and if it's gone, limp mode kicks in.
The old car's cap is where your hand goes — but a rental car, a new motor or a company car keeps the fillers somewhere else. That is the second factor: a new vehicle.
A spouted bottle meets no obstacle at a diesel filler any more than at an AdBlue one. So the tip, once begun, keeps on. The same few seconds decide it, in the middle of Gwehelog Common or out in Gwehelog.
Which filler is for AdBlue, and which for diesel?
A few seconds is all these take — so check them before you tip anything, on a drive in Llancayo or a forecourt around Gwehelog Common.
- Colour and marking: an AdBlue cap is commonly blue, or says "AdBlue", where a diesel cap usually does not. Trust the cap, not where it sits.
- The size. On many motors the AdBlue filler neck is the smaller of the two.
- Open the flap and check for a label — plenty of vehicles mark which belongs in which filler right there.
- The handbook. If the filler is not by your diesel cap, it's in your boot or under the bonnet, and the handbook says which.
- Whoever had it before will know. Ask when you pick up a hire car or company car — at Pontypool and New Inn's car park, perhaps — rather than once the warning appears.
Topping up AdBlue without it reaching your diesel tank
On the day the light appears — anywhere it is across Monmouthshire — a simple routine to follow.
- Park then switch off. Not on a slope, not with the engine running, and not in a rush on the side of Ty-Freeman Road.
- Find the AdBlue filler, read the cap, and say the name "AdBlue" out loud as unscrewing it. It seems silly. It works.
- The diesel cap stays on. Where both share a flap, make sure it's shut before lifting the bottle.
- Gently does it, through the bottle's own spout, till it's full or the bottle is empty.
- Before starting the car, close the cap and check a second time that the diesel cap was never opened off.
If at stage two or three you find you have already poured into your diesel side, stop there. Skip stage five entirely.
Put AdBlue in the diesel tank around Gwehelog Common already?
Short list, then. Top of it: your motor stays off. Leave your ignition off as well, since on many diesels it by itself runs your pump. Topping up with diesel won't thin it: rather than mixing, AdBlue drops to the bottom of the tank, right where the fuel is taken from.
Ask the attendants to help push your car clear of the pump if you are at a forecourt — the BP, the Gulf or somewhere else. Your own driveway around Gwehelog Common is the place it stays.
If your engine has already run, stop as soon as it is safe and switch off. On the M4, under 10 miles from Gwehelog Common, that means the next junction. Distance counts — a quick hop across Gwehelog Common is a smaller job than heading under 15 miles to Newport — so tell us about how far it went.
Our arrival around Gwehelog Common, and what happens next
We come to your car wherever it has stopped, whether that's outside the local primary school, near Gwehelog Methodist Church or on your own driveway. Those answers settle the work and the quote, and so we ask what got in, roughly how much, and if it's run. You hear that price by phone, before anyone sets off.
Then that tank is drained and your system cleaned thoroughly. AdBlue crystallises and is corrosive to some of the metals in a fuel system, so it does not wash out on its own — which is why the flush counts more with AdBlue than with petrol. Once the fuel filter is flushed — or renewed, where required — fresh diesel goes in, and then the car gets tested. The motor is started next and tested to make sure it runs properly, all before we head off.
If the motor hasn't run, most jobs take about half an hour once we are there, using pumps that are fine on a working forecourt and quiet enough to use outside a house after dark. No money in advance; you settle up on the day. At the end, the VAT invoice and a report from the engineer are handed to you for the insurer. Before we get there, have a look at your insurance documents; plenty carry cover for misfuelling.
About Gwehelog Common and where it is
Gwehelog Common is a small village situated on the banks of a river in Monmouthshire, with a mix of rural and natural environments. Gwehelog Common has a relatively low elevation of 117 metres and is located near several other small villages and common land areas, including Gwehelog and Trostrey Common. Gwehelog Common is characterized by its predominantly detached housing stock and is within commuting distance of Newport, the nearest city. Gwehelog Common is also close to popular walking routes, such as the Llandenny Walks.
AdBlue drains around Gwehelog Common and across Monmouthshire
Gwehelog Common is a village, and our vans that cover it also work the places near it, Trostrey Common and Llandenny Walks among them, across the NP postcode area. Our van gets to you fastest with a postcode starting NP15 1.
Your car remains put. Wherever it stands — beside Gwehelog Village Hall, on a layby heading to Big Wood, on a drive — that's where it is emptied. If you are close to a boundary, or somewhere hard to describe like the back of Llandenny Village Hall, ring and ask instead of assuming.
In short, for Gwehelog Common people
Before you pour, read the cap. Even so AdBlue in the diesel tank? Petrol in Diesel can empty it wherever it stands, wherever in Monmouthshire: keep the vehicle off and phone 0333 366 0103.