--- title: AdBlue in a Diesel Tank Fallings Heath: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/fallings-heath-west-midlands/ location: Fallings Heath county: West Midlands latitude: 52.565590 longitude: -2.027690 service: AdBlue in a Diesel Tank updated: 2026-10-18 --- # AdBlue in a Diesel Tank in Fallings Heath: How It Happens and How to Avoid It Stop here for a moment when the diesel tank already has AdBlue in it: ignition off, motor off, then call 0333 366 0103. In Fallings Heath, catching it before the motor turns normally leaves draining and a full flush on the spot. Not happened yet? Below, the rest of the page explains the why it takes place and the how to avoid it altogether. ## Two fillers, two tanks: AdBlue in a diesel motor Plenty of modern diesels in The Leys, like those in Fallings Heath, run on two fluids; the engine gets only the diesel. Your exhaust, not your motor, is where AdBlue ends up: sprayed into the gas to clean them, from a separate tank. There is a filler on every tank. Other vehicles put the AdBlue filler in your boot or under the bonnet; plenty of others place the two side by side under one flap. Diesel gets filled at every forecourt visit, week in, week out. Far less commonly, the AdBlue side is filled — normally from a bottle, by someone thinking about where it goes. That gap is where the error lives. ## How AdBlue in the diesel tank occurs in Fallings Heath Seldom is it carelessness: normally three things coincide. First, the warning. Low AdBlue brings a warning from the vehicle, and letting it run out leads to limp mode — so a rushed top-up, perhaps before work off Joynson Street, perhaps outside The Cottage Spring on the way home after work. Next, the hand reaches for the cap it would have used on the old vehicle — because a rental car, a new vehicle or a company car places the fillers where your last one did not. A spout-topped bottle meets no resistance at a diesel filler any more than at an AdBlue one. So the pour, after begun, carries on. Darlaston or the heart of Fallings Heath: it is the same few seconds in both. ## Telling the AdBlue filler from the diesel filler Before you pour anything, whether on a drive in Woods Bank or a forecourt around Fallings Heath, check these. They take a few seconds. - Read the cap instead of going by position: AdBlue ones are commonly blue or marked "AdBlue", and diesel caps normally aren't. - The size. On many vehicles the AdBlue filler neck is the smaller of the two. - Look inside your fuel flap: many cars have a label there showing which fuel goes where. - The handbook. If the filler isn't by the diesel cap, it's in the boot or under the bonnet, and the handbook says which. - Check with the person who drove it last — before you leave, not when the light comes on — if you collect a hire or company car from somewhere like the car park outside Darlaston. ## Topping up AdBlue without it reaching the diesel tank A routine for the day the light comes on, wherever around West Midlands that is. - Turn off after you park — level ground, engine stopped, and never in a rush by Old Park Road at the roadside. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it works. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — then leave the vehicle on. - Using the bottle's own spout, pour slowly — and stop when it's full or the bottle is empty. - Before you start your car, close the cap and check again that your diesel cap never came off. If at stage two or three you find you have already poured into your diesel side, stop there. Don't carry on to stage five. ## AdBlue in the diesel tank already, in Fallings Heath? Then the order of things is short. Don't start the motor. The fuel pump runs on many diesels the moment your ignition goes on — so leave it off. Diluting it with more diesel fails, because AdBlue settles to the base instead of mixing — and that's where the fuel is drawn from. Ask the staff to help push the car clear of the petrol pump if you're at a forecourt — the Texaco, the another forecourt nearby or anywhere else. Your own drive in Fallings Heath is where it stays. Where the engine has run already, stop safely then switch the vehicle off. On the M6, under a mile from Fallings Heath, that means the next exit. Tell us roughly how far it went: a run towards Wolverhampton, under 5 miles away, is a bigger job than a short hop across Fallings Heath. ## When we turn up in Fallings Heath, what takes place? We come to your car wherever it has stopped, whether that's outside Kings Hill Primary School, close to Church of All Saints or on your own drive. Both the work and our quote depend on three replies — which fluid, what quantity, and whether it's run — so our engineers ask. You get that quote on the phone, before anyone sets off. Next: a drain, then a thorough flush of the whole system. Much more than with petrol, it counts here: the crystals build up, certain metals are attacked, and nothing clears away unaided, however long it sits. Once the filter has been flushed — or renewed, where required — fresh diesel goes in, and finally your car gets tested. Your engine is fired up next and tested to confirm it runs properly, all before our technicians leave. Using pumps fine on a working forecourt and quiet enough for use outside a house at night, most jobs where your motor hasn't run take about half an hour once we are there. The insurer usually wants the engineer's report and your VAT invoice, and you get both at the end. Payment comes on the day, with no deposit. Before we get there, take a look at your policy; plenty carry cover for misfuelling. ## About Fallings Heath itself Fallings Heath is a suburban area located on the outskirts of Wolverhampton, near the lakeside and surrounded by nearby places such as Darlaston and Kings Hill. Fallings Heath sits at an elevation of 146 metres, with semi-detached housing being the predominant type of accommodation. Fallings Heath is situated approximately 4.5 miles from Wolverhampton city centre and 108.9 miles from London. Fallings Heath has a population of around 7787 residents. ## AdBlue drains in Fallings Heath and across West Midlands Throughout WS postcodes, the teams covering Fallings Heath — a residential suburb — work the surrounding locations too, Darlaston Green and Kings Hill included. Quickest of all: give a WS10 9 postcode to our van. Moving the vehicle is not needed. A drive, a lay-by on the way to Black Country Millennium Forest, a side street near Zia-E-Medina: our engineers drain it where it stands. Tricky to pin down, like the back of Kingdom Hall? By a county line? Asking is better than assuming, and so ring. ## In short, for Fallings Heath drivers Pour no AdBlue till you've read the cap. Still AdBlue in the diesel tank? Petrol in Diesel can drain it wherever it is, wherever across West Midlands: keep the car off then call 0333 366 0103.