AdBlue in a Diesel Tank in Mwdwl-eithin: Why It Occurs and How to Prevent It
AdBlue already in the diesel tank? Then put this page aside a moment, keep the ignition and motor off, and ring 0333 366 0103. Usually, when the motor hasn't run, it is drained and thoroughly rinsed where the vehicle sits around Mwdwl-eithin. Here before the event? In that case the rest covers how it comes about and how to stop it happening at all.
AdBlue in a diesel car, and its separate tank
Many current diesels on the roads round Mwdwl-eithin and Golch carry two liquids, not one. Diesel goes to the engine. AdBlue goes to your exhaust, where it is sprayed into the gas to clean it, and it lives in a tank of its own.
Every tank has one filler of its own. Other motors keep the AdBlue filler in the boot or under the bonnet; a lot more have both side by side under one flap. The diesel side is fuelled at the pump all the time. The AdBlue side is topped up far less regularly, normally from a bottle, and normally by someone who has to stop and think where it goes. The slip lives in that gap.
Mwdwl-eithin: how AdBlue in the diesel tank takes place
Three things tend to come together, and carelessness is seldom one of them.
To start with, the warning. Low AdBlue triggers a warning from your car, and letting it run dry leads to limp mode — hence a hurried top-up, perhaps before work off Carmel Road, perhaps outside Druid Inn on the way home that evening.
The old car's cap is where your hand goes — yet a rental car, a new motor or a company car keeps the fillers elsewhere. That's the second factor: a new motor.
Third, the bottle fits: diesel filler or AdBlue one, it slides in just as readily, and after the pour starts, nothing halts it. Whether it takes place in Carmel or the middle of Mwdwl-eithin, it is the same few seconds.
How to tell the AdBlue filler from the diesel one
Before you pour anything, whether on a driveway in Naid-y-march or a forecourt in Mwdwl-eithin, check these. They take a few seconds.
- Read the cap rather than going by position: AdBlue ones are frequently blue or marked "AdBlue", and diesel caps usually are not.
- Many motors give AdBlue the smaller neck of the two.
- The flap. Look inside the fuel flap for a label. Plenty of cars say there which fuel goes where.
- In your boot or under the bonnet: that's where your filler is if it is not by your diesel cap, and the handbook tells you which.
- Picking up a hire or company car, perhaps at the car park outside Flint? Check with the person who drove it last before leaving, not when the light goes on.
Keeping AdBlue out of the diesel tank when you top up
A routine for the day the light comes on, wherever around Flintshire that is.
- Not in a rush on the side of Ffordd Ffynnon, not on a slope, not with your motor running: park then switch off properly.
- Find the AdBlue filler, check the cap, and say the word "AdBlue" aloud as unscrewing it. It sounds daft. It works.
- Leave the 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, tip slowly — and stop when it is full or the bottle is empty.
- Only then, start the vehicle: close the cap, check a second time, and make sure the diesel cap was never opened.
Discover during the second or third stage that AdBlue went in the wrong tank? That is where you stop. Don't go on to stage five.
Put AdBlue in the diesel tank around Mwdwl-eithin already?
Short order, then. Top of that: your engine remains off. On plenty of diesels the ignition alone runs the fuel pump, and so do not switch the car on. Don't top up with diesel to dilute it: AdBlue doesn't mix with diesel, it sinks to the bottom of that tank, where your fuel is drawn from.
If you are on a forecourt, whether it is the Texaco or the Shell, ask the attendants to help roll the vehicle away from the petrol pump. If you're on your own driveway around Mwdwl-eithin, leave the vehicle where it stands.
If your engine has already run, stop as soon as it is safe and switch off. Mwdwl-eithin sits under 10 miles from the M53; there, use the next junction. Roughly how far did it go? Hopping across Mwdwl-eithin is less work than a trip of under 10 miles towards St Asaph, so say.
Our arrival around Mwdwl-eithin, and what occurs next
Anywhere the vehicle has stopped, whether outside the local primary school, near St. David's Church or on your own drive, the van travels to it. Our engineers ask what got in, about how much, and whether it's run, since those answers determine this work and the price. No one sets off before you have had our quote by phone.
Then that tank is emptied and the fuel system flushed thoroughly. AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it doesn't wash out on its own — which is why the flush matters more here than with petrol. Testing is at the end: before that, clean diesel is added, and the filter is cleaned or changed if necessary. Then our technicians start it and confirm it runs correctly before we go.
Unstarted vehicles mostly need a half-hour job from the moment we arrive. The kit is safe on a live forecourt, and quiet enough for a residential street late at night. Paying happens on the day, not upfront, and you receive the paperwork an insurer wants: an engineer report and a VAT invoice. It's worth checking your policy as the van travels to you: misfuelling cover comes with plenty of policies.
About Mwdwl-eithin itself
Mwdwl-eithin is a coastal locality in Flintshire, situated near the towns of St Asaph and Carmel, with a mix of rural and residential areas. Mwdwl-eithin sits at an elevation of 224 metres, overlooking the surrounding countryside and the coast. Mwdwl-eithin is characterised by its predominantly detached housing stock, reflecting its role as a residential area with some agricultural activity.
AdBlue drains around Mwdwl-eithin and across Flintshire
As a coastal area, Mwdwl-eithin shares its vans nearby areas — Pantasaph, Holway — all the way across CH postcodes and the wider area beyond. A postcode starting CH8 8 gets the van to you fastest.
The car doesn't need to move. Our technicians drain it where it is — a side street near Eyton's Shaft Lead Mine, a lay-by on the way to Maen Llwyd, a drive. If you are close to a boundary, or somewhere hard to describe like the back of St. Paul's, ring and ask instead of guessing.
For Mwdwl-eithin motorists, the short version
Pour no AdBlue till you have read the cap. AdBlue in the diesel tank regardless? Leave the vehicle off and call 0333 366 0103; Petrol in Diesel empties it where it stands, across Flintshire.