--- title: Foundry Corner: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/foundry-corner-norfolk/ location: Foundry Corner county: Norfolk latitude: 52.505440 longitude: 1.029890 service: AdBlue in a Diesel Tank updated: 2026-10-21 --- # Why It Happens and How to Prevent It: AdBlue in a Diesel Tank in Foundry Corner Stop here for a moment if the diesel tank already holds AdBlue in it: ignition off, engine off, then call 0333 366 0103. Around Foundry Corner, catching it before your motor runs usually leaves draining and a thorough flush on the spot. If you're reading before it has happened, the rest of this page is about why it happens and how to make sure it doesn't. ## AdBlue in a diesel vehicle: two tanks, two fillers No single fluid but two: that's how plenty of modern diesels around Foundry Corner and Besthorpe carry, with diesel feeding your engine. Its own tank holds it, and from there it is sent to the exhaust, where spraying treats the fumes. Each tank comes with a filler of its own. Plenty of vehicles have a single flap for the two, whereas some move the AdBlue filler to the boot or under the bonnet. Topping up the diesel side at the petrol pump goes on constantly. Much less commonly, the AdBlue side gets topped up — mostly from a bottle, by someone working out where it goes. It is in that gap that the error lives. ## AdBlue in your diesel tank around Foundry Corner: how it takes place Rarely is it carelessness: normally three things coincide. First, the warning. Low AdBlue triggers a warning from your car, and letting it run dry leads to limp mode — hence a rushed top-up, maybe before work off Foundry Corner, perhaps outside the pub in the village on the way home that evening. The old car's cap is where the hand reaches — yet a rental car, a new motor or a company car keeps the fillers elsewhere. That's the second factor: an unfamiliar vehicle. Nothing stops the tip after it has started, since a bottle with a spout goes into a diesel filler as readily as an AdBlue one. The bottle fits. Burgh Common or the middle of Foundry Corner: it is the same few seconds either way. ## The AdBlue filler and the diesel filler: telling them apart Check these before pouring, at a forecourt around Foundry Corner or a drive over in Haverscroft Street. A few seconds, no more. - Blue and marking: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap normally does not. Trust the cap, not where it sits. - The size. On plenty of vehicles the AdBlue filler neck is the smaller of the two. - Look inside your fuel flap: plenty of vehicles have a label there saying which fuel goes where. - Cannot see it beside your diesel filler? In that case look below the bonnet or inside the boot — the owner's manual says which. - The previous driver will know. Check when you collect a rental or fleet car — from Attleborough's car park, say — rather than when the light appears. ## Topping up AdBlue without it reaching your diesel tank Wherever in Norfolk the light comes on, here is a routine for the day. - Park then switch off. Not on a slope, not with your engine running, and not in a rush on the side of Buckenham Road. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it works. - The diesel cap stays on. When both sit under a flap, confirm it's closed before the bottle comes up. - Pour slowly, using the bottle's own spout. Stop when it is full or when the bottle is empty. - Before starting the car, shut the cap and check a second time that the diesel cap was never opened off. Spot at stage two or three that it has already gone into the diesel side? So stop just there. Never carry on to step five. ## Foundry Corner: already put AdBlue in the diesel tank? The short order of things, starting with not starting your motor. The fuel pump starts on plenty of diesels the moment the ignition goes on — so leave it off. Don't top up with diesel to thin it: AdBlue does not mix with diesel, it sinks to the bottom of the tank, where the fuel is drawn from. If you're at a forecourt, whether it's the Sainsbury's or the Esso, ask the attendants to help push the vehicle clear of the petrol pump. Leave it where it is if you are on your own driveway around Foundry Corner. Where your engine has been run by now, pull over somewhere safe and turn the vehicle off. The next exit means the place to leave if you are on the M11, under 50 miles from Foundry Corner. Mileage matters — a short hop across Foundry Corner is a smaller job than heading under 15 miles to Norwich — so say about how far it went. ## Foundry Corner: what takes place when our technicians arrive The van reaches the vehicle wherever it has come to rest — your own driveway, beside Connaught Hall, or outside Attleborough Primary School. Our engineers ask what went in, roughly how much, and whether it's run, because those answers determine the work and the price. You get that quote on the phone, before anyone heads out. After that: a drain, then a thorough flush of the whole system. With AdBlue that matters more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, so it doesn't wash out on its own. After the filter is flushed — or replaced, where required — fresh diesel goes in, and finally your car gets tested. We do not go until it has been fired up and is running properly. Unrun cars usually mean a half-hour visit after arrival. The equipment is safe on a live forecourt, and hushed enough for a driveway after dark. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Misfuelling cover is part of many insurance policies — and so use the wait to look at yours. ## About Foundry Corner and where it is Foundry Corner is a small suburban area in Norfolk, situated inland at an elevation of 46 metres, with detached housing being the predominant type of accommodation. Foundry Corner lies approximately 14 miles from Norwich and 84.7 miles from London, placing it in a relatively rural setting. Foundry Corner is close to nearby places such as Burgh Common, Attleborough, and Puddledock, and has a population of around 588 residents. Foundry Corner remains a quiet residential community with a mix of local amenities and rural surroundings. ## AdBlue drains around Foundry Corner, and Norfolk beyond Attleborough and Puddledock are among the towns around Foundry Corner, a residential suburb, that the same teams cover, throughout NR postcodes. Quote a postcode beginning NR17 1, and the van arrives quickest. The car does not need to move. A drive, a lay-by on the way to Gaymers Field, a side street close to Attleborough Baptist Church: our technicians drain the car where it is. Assuming won't help at the back of Saint Mary's Church, close to a boundary, or anywhere awkward to pin down; ring and check. ## Foundry Corner people: the short version Tip nothing until you've read the cap. Even so AdBlue in your diesel tank? Petrol in Diesel can empty it where it is, wherever across Norfolk: switch the vehicle off and call 0333 366 0103.