--- title: AdBlue in a Diesel Tank Elliots Town: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/elliots-town-caerphilly/ location: Elliots Town county: Caerphilly latitude: 51.718000 longitude: -3.236600 service: AdBlue in a Diesel Tank updated: 2026-10-02 --- # Why It Happens and How to Prevent It: AdBlue in a Diesel Tank in Elliots Town If AdBlue is already in your diesel tank, stop reading for a moment: leave the engine and the ignition off and phone 0333 366 0103. In Elliots Town, finding it before the motor runs normally leaves a drain and a full flush on the spot. Reading before the event? In that case what follows covers how it comes about and what to prevent it ever happening. ## AdBlue in a diesel vehicle: two tanks, two fillers Diesel feeds your engine — but plenty of newer diesels driven round Elliots Town and Cwmsyfiog hold a second liquid as well. AdBlue's own tank holds it, and from there it goes to the exhaust, and there spraying cleans the fumes. Separate tanks, different fillers. On a lot of vehicles the two sit side by side under the same flap; on others the AdBlue filler is in the boot or under the bonnet. The diesel side is filled at the petrol pump all the time. Much less frequently, the AdBlue side gets filled — mostly from a bottle, by someone thinking about where it goes. The error lives in that gap. ## How AdBlue in your diesel tank occurs in Elliots Town Three things tend to come together, and carelessness is rarely one of them. The warning comes first. As AdBlue runs low your car tells you, and if it runs out completely, the car drops into limp mode. So the top-up is done in a hurry: on a driveway off Long Row before work, or in the car park outside Tredegar Arms on the way home. The old car's cap is where your hand goes — but a rental car, a new vehicle or a company car puts the fillers elsewhere. That's the second thing: a new vehicle. A spout-topped bottle meets no obstacle at a diesel filler no more than at an AdBlue one. So the tip, once started, carries on. It takes seconds, whether out in New Tredegar or bang in the centre of Elliots Town. ## How to tell the AdBlue filler from the diesel one Before you tip anything, whether on a drive in Hollybush or a forecourt in Elliots Town, check these. They take a few seconds. - Blue and marking: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap usually doesn't. Go by the cap, not where it sits. - Look at the size: the smaller filler neck is, on plenty of vehicles, the AdBlue one. - Lift the flap and check for a label — plenty of motors show which goes in each filler right there. - In your boot or under the bonnet: that's where your filler sits if it is not by your diesel cap, and the handbook says which. - Ask the person who drove it last — before you leave, not when the light comes on — when you collect a hire or company car from somewhere like the car park outside Tir-Phil. ## Topping up AdBlue without it reaching your diesel tank When the light goes on, wherever around Caerphilly, follow this routine. - Switch off after you park — level ground, engine off, and never rushed by Cross Street at the roadside. - Say "AdBlue" out loud as you unscrew the cap, after finding the AdBlue filler and read it. Daft, perhaps, but it does the trick. - If both sit under one flap, check the diesel cap is still closed before you lift the bottle — and leave the vehicle on. - Gently is best, through the bottle's own spout, till it is full or the bottle runs out. - Close the cap, and look again — confirm your diesel cap remained closed throughout. Only then, start the car. Spot at step two or three that it's already gone into your diesel side? So stop just there. Skip step five altogether. ## Elliots Town: already put AdBlue in your diesel tank? Then the order of things is short. Don't start the engine. On many diesels your ignition alone runs the fuel pump, and so don't switch it on. Diluting it with more diesel fails, since AdBlue settles to the bottom instead of mixing — and that's where your fuel is drawn from. Ask the staff to help roll the car clear of the petrol pump if you're at a forecourt — the Morrisons, the another forecourt nearby or somewhere else. Leave it where it is if you are on your own driveway around Elliots Town. When the motor has run by now, stop safely then turn the vehicle off. On the M4, under 15 miles from Elliots Town, that means the next exit. Roughly how far did it go? Crossing Elliots Town is less a job than a run of under 15 miles towards Newport, so say. ## Elliots Town: what occurs when our technicians turn up Wherever your car came to rest, whether by the local primary school, near Winding House or at home, the van comes to it. We ask what went in, about how much, and if it has run, since the replies settle the work and our price. During the phone call itself, you hear our price — ahead of anything else. The system is then purged thoroughly, once your tank is cleared. More than with petrol, it counts here: the crystals build up, certain metals are attacked, and none of it clears out on its own, however long it is left. The fuel filter is flushed, or replaced where it needs to be; clean diesel goes in; and the car is tested. Before we go, our engineers start it and make sure that it's running properly. Most jobs are done in roughly half an hour once our technicians arrive, provided the engine has not run — and the pumps our technicians use are safe 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. It's worth looking at your policy while we travel to you: misfuelling cover is included with many policies. ## About Elliots Town itself Elliots Town is a suburban area situated on the riverside in Caerphilly, with a mix of terraced housing and a population of around 2980 residents. Elliots Town sits at an elevation of 226 metres, overlooking the surrounding landscape. Elliots Town is located near other communities such as New Tredegar, Tir-Phil, and Phillips Town, and is approximately 13.7 miles from Newport. Elliots Town forms part of the wider urban area in south Wales, within commuting distance of major cities. ## AdBlue drains across Caerphilly, Elliots Town included Tir-Phil and Phillips Town are among the towns near Elliots Town, a residential suburb, that the same teams cover, throughout NP postcodes. Quickest of all: give a NP24 6 postcode for our van. Shifting the car is not necessary. A driveway, a lay-by on the way to Grove Park, a side street close to Saint Dingat's Church: our engineers drain the vehicle where it stands. If you're near a border, or somewhere hard to explain like the back of New Tredegar War Memorial, ring and ask rather than guessing. ## For Elliots Town motorists, the short version Read the cap before you tip. AdBlue in the diesel tank after all? Keep it off and ring 0333 366 0103; Petrol in Diesel drains it where it stands, across Caerphilly.