--- title: Explained: AdBlue in a Diesel Tank Wrecclesham canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/wrecclesham-surrey/ location: Wrecclesham county: Surrey latitude: 51.199650 longitude: -0.817520 service: AdBlue in a Diesel Tank updated: 2026-10-26 --- # Why It Occurs and How to Prevent It: AdBlue in a Diesel Tank in Wrecclesham AdBlue already in the diesel tank? Then set this page down for now, keep the ignition and engine off, and phone 0333 366 0103. Caught before your motor runs, it's usually a drain and a thorough flush, done where the car is in Wrecclesham. The remainder of this page covers why it happens and how to make sure it does not — handy if you are reading before it has happened. ## AdBlue in a diesel motor, and its separate tank Plenty of newer diesels around The Bourne, as well as Wrecclesham, carry on two liquids; the engine takes only your diesel. The exhaust, not your engine, is where AdBlue ends up: dosed into the fumes to fresh it, from its own tank. Every tank has one filler of its own. Plenty of vehicles have a single flap for both, whereas some put the AdBlue filler to your boot or under the bonnet. Filling your diesel side at the pump goes on all the time. Rarely filled, AdBlue usually goes in from a bottle, tipped by a driver who has to stop and think what cap to use. The mistake grows in that gap between them. ## How AdBlue in the diesel tank occurs in Wrecclesham Seldom is it carelessness: normally three things coincide. The warning comes first. As AdBlue runs low the vehicle tells you, and if it runs out completely, the vehicle goes into limp mode. So the top-up is done in a hurry: on a drive off School Hill before work, or in the car park outside Bear and Ragged Staff on the way home. Unfamiliar vehicles come second, as well. Rentals, new cars and company vehicles put their fillers differently, and the hand reaches for the cap it used on the old one. Lastly, the spout goes in: a diesel filler or AdBlue filler, it goes in just as easily, and after the pour starts, nothing stops it. It's seconds, whether out in Shortheath or bang in the centre of Wrecclesham. ## Which filler is for AdBlue, and which for diesel? Be it a Wrecclesham forecourt or a driveway out in Rowledge, take a couple of seconds over these before anything goes in. - Where it sits can mislead; the cap does not. AdBlue ones are often blue or bear the word "AdBlue" — diesel ones normally don't. - Many motors give AdBlue the smaller neck of the two. - The flap. Look inside your fuel flap for a label. Plenty of motors say there which fuel goes where. - The handbook. If your filler isn't by your diesel cap, it is in your boot or under the bonnet, and the handbook says which. - Whoever had it before knows. Ask when you collect a hire car or fleet car — from Farnham's car park, say — rather than once the warning appears. ## Keeping AdBlue out of the diesel tank when you top up When the light comes on, anywhere in Surrey, use this routine. - Stop somewhere level, motor off, with time in hand — not hurried on the side of Wrecclesham Road. - Find the AdBlue filler and read the cap. Say "AdBlue" out loud as you unscrew it. It sounds silly and it does the trick. - If both sit under one flap, check your diesel cap is still closed before you lift the bottle — then leave the car on. - Using the bottle's own spout, tip slowly — and stop when it is full or the bottle is empty. - Close the cap and check once more. Make sure the diesel cap was never opened. Only then start the vehicle. Discover at the second or third stage that the bottle went into the diesel filler? That is where you stop. Leave out step five entirely. ## Wrecclesham: already put AdBlue in the diesel tank? What follows is a short order of things, beginning with no starting your motor. The fuel pump starts on many diesels the moment the ignition is switched on — and so leave it off. Filling up with diesel will not dilute it: rather than mixing, AdBlue sinks to the bottom of the tank, just where fuel is taken from. The staff at Texaco, BP or another forecourt will usually help to push your car away if you ask. At home around Wrecclesham? Then the car stays put. When the engine has run already, pull over safely and turn it off. Wrecclesham lies under 10 miles from the M3; there, take the first exit. A short hop across Wrecclesham is a smaller job than a run towards Winchester, under 25 miles away, so tell us about how far it went. ## Our arrival around Wrecclesham, and what takes place next Wherever the car has stopped, be it by St Peter's CofE Primary School, near St. Peter's Church or on your own drive, our van comes to it. Both the work and the quote depend on three replies — which liquid, what amount, and if it's run — so we ask. During the call itself, you are told the price — ahead of anything else. Emptying your tank comes next, then a thorough flush of your system. Much more than with petrol, it counts with AdBlue: the crystals form, certain metals are attacked, and none of it washes away unaided, however long it is left. Testing is at the end: before that, fresh diesel goes in, and the fuel filter is flushed or changed if necessary. The motor is started next and checked to confirm it runs properly, all before we go. Most jobs are finished in about half an hour once we arrive, provided your motor has not run — and the pumps our technicians use are fine on a live forecourt yet quiet after dark beside a house. Paying is on the day, not upfront, and you receive the paperwork an insurer asks for: an engineer's report and a VAT invoice. Before we get there, take a look at your policy; plenty include cover for misfuelling. ## About Wrecclesham and where it is Wrecclesham is a village in Surrey, situated on the riverside at an elevation of 92 metres, with semi-detached housing being the predominant type of accommodation. Wrecclesham lies near the villages of Shortheath, Middle Bourne, and Boundstone, and is approximately 36.6 miles from London. Wrecclesham has a population of around 3451 residents, and its location near the river contributes to its scenic setting. Wrecclesham is also close to the city of Winchester, which is 23.4 miles away. ## AdBlue drains round Wrecclesham, and Surrey beyond Middle Bourne and Boundstone are among the towns near Wrecclesham, a village, that the same teams cover, throughout GU postcodes. The van reaches you fastest with a postcode starting GU10 4. The car doesn't need to shift. We drain it where it is — a side street near Wrecclesham Community Centre, a lay-by on the way to Wrecclesham Recreation Ground, a driveway. Tricky to pin down, like the back of The church at Brambleton Hall? By a county line? Asking beats assuming, and so ring. ## In short, for Wrecclesham people Before you tip, read the cap. If AdBlue has gone in the diesel tank anyway, leave it off and phone 0333 366 0103. Petrol in Diesel empties it where it stands, anywhere across Surrey.