--- title: AdBlue in a Diesel Tank Wilby? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/wilby-norfolk/ location: Wilby county: Norfolk latitude: 52.468860 longitude: 0.991210 service: AdBlue in a Diesel Tank updated: 2026-10-14 --- # AdBlue in a Diesel Tank in Wilby: How It Happens and How to Avoid It AdBlue already in your diesel tank? Then set this page aside for now, keep the ignition and motor off, and phone 0333 366 0103. In Wilby, finding it before the motor runs usually leaves draining and a thorough flush on the spot. The remainder of this page covers why it occurs and how to make sure it doesn't — useful if you're reading before it has happened. ## Two fillers, two tanks: AdBlue in a diesel motor No single liquid but two: that is what many newer diesels near Wilby and Snetterton Heath run, with diesel for your motor. The exhaust, not your engine, is where AdBlue ends up: sprayed into the gas to fresh them, from a separate tank. Each tank has a filler of its own. Under one flap, next to each other: that is the arrangement on a lot of cars. On others, AdBlue's filler sits under the bonnet or in your boot instead. Topping up your diesel side at the petrol pump happens constantly. A driver who has to stop and think where it goes normally tops up the AdBlue side, from a bottle, and much less regularly. The error lives in that gap. ## Wilby: how AdBlue in the diesel tank happens It's seldom carelessness. Three things tend to line up. Hurry comes from the warning. Your car warns you as AdBlue runs low, and a dry tank puts the vehicle into limp mode — so the top-up happens in a rush, before work on a driveway off Church Road, or heading home in the car park at Old Railway Tavern. The old car's cap is where your hand goes — but a rental car, a new vehicle or a company car keeps the fillers somewhere else. That's a second factor: an unfamiliar motor. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the pour after it has started. It takes seconds, be it out in Eccles Road or right in the centre of Wilby. ## How to tell the AdBlue filler from the diesel one Be it a Wilby forecourt or a drive out in Hunts Corner, take a couple of seconds on these before any goes in. - Check the cap rather than going by position: AdBlue ones are often blue or marked "AdBlue", and diesel ones normally aren't. - On plenty of motors, the size tells: AdBlue gets the smaller filler neck. - A label inside the fuel flap frequently says which fuel goes where, on plenty of vehicles. Look for it. - 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. - Picking up a hire or company car, perhaps at the car park outside Eccles Road? Check with whoever drove it last before you set off, rather than once the light comes on. ## How to top up without AdBlue in the diesel tank On the day the light comes on — anywhere it is across Norfolk — a routine to use. - Switch off once parked — flat ground, engine off, and never in a rush by New Lane on the verge. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds daft and it works. - The diesel cap stays on. When both sit under a flap, confirm it's shut before the bottle comes up. - Using the bottle's own spout, pour slowly — and stop when it's full or the bottle is empty. - Close the cap and check a second time. Make sure the diesel cap was never opened. Only then start the vehicle. Spot at step two or three that it's already gone into the diesel side? So stop just there. Never go on to stage five. ## Wilby: already put AdBlue in the diesel tank? Then the order of things is short. Do not start your motor. Leave the ignition off as well, because on plenty of diesels it by itself starts your pump. Do not top up with diesel to thin it: AdBlue doesn't mix with diesel, it sinks to the bottom of the tank, where the fuel is pulled from. The staff at Esso, Sainsbury's or any forecourt will usually help to push the vehicle clear when asked. Leave it where it is if you're on your own drive around Wilby. Already run? Stop once it's safe, then turn off. Wilby sits under 50 miles from the M11; there, take the next junction. Tell us roughly how far it went: a run towards Norwich, under 25 miles away, is a bigger job than a short hop across Wilby. ## What happens when we turn up in Wilby Outside Banham Primary School, near All Saints or on your own driveway: wherever the vehicle has stopped, we come to it. Both the work and the quote rest on three answers — which liquid, what amount, and whether it has run — so we ask. You hear that price by phone, before anybody heads out. The system is then flushed thoroughly, once that tank is cleared. With AdBlue that counts more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own. Testing is at the end: before that, fresh diesel is added, and your filter is flushed or changed if necessary. After that we start the car and make sure it runs smoothly before leaving. If the engine hasn't run, most jobs take about half an hour once we're there, using pumps that are fine on a busy forecourt and quiet enough to use outside a house after dark. The insurer usually wants the engineer's report and your VAT invoice, and you get both once this job is done. Payment is on the day, with no money upfront. Many insurance policies include misfuelling cover, so it is worth checking yours whilst we are on the way. ## About Wilby, for a moment Wilby is a small hamlet in Norfolk, situated inland at an elevation of around 35 metres, and is located approximately 16.8 miles from Norwich. Wilby comprises predominantly detached housing and has a population of around 506 residents. Wilby is close to nearby places such as Eccles Road, Stacksford, and Quidenham, and is about 81.7 miles from London. ## AdBlue drains across Norfolk, Wilby included Wilby is a rural hamlet, and our teams that cover it also work the places near it, Stacksford and Quidenham among them, across the NR postcode area. Fastest of all: give a NR16 2 postcode for the van. Your car stays put. Draining takes place on the spot, whether a drive, a street by Saint Mary the Virgin, or a lay-by towards The Belt. Awkward to pin down, like the back of Eccles School Library? By a county line? Checking beats assuming, and so ring. ## For Wilby drivers, the short version Before you pour, read the cap. Petrol in Diesel drains it where it stands, anywhere in Norfolk, if AdBlue has gone in your diesel tank all the same — and so leave the vehicle off and ring 0333 366 0103.