--- title: Explained: AdBlue in a Diesel Tank Shamley Green canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/shamley-green-surrey/ location: Shamley Green county: Surrey latitude: 51.184150 longitude: -0.524800 service: AdBlue in a Diesel Tank updated: 2026-10-03 --- # AdBlue in a Diesel Tank in Shamley Green: How It Happens and How to Prevent It AdBlue already in the diesel tank? In that case put this page aside for now, leave the ignition and motor off, then ring 0333 366 0103. A drain and a full flush, done right where the vehicle stands around Shamley Green, is normally all it takes if caught before your motor runs. Nothing happened yet? Below, the rest of the page explains the why it takes place and the how to prevent it for good. ## AdBlue in a diesel car, and its separate tank Plenty of newer diesels in Birtley Green, as well as Shamley Green, run on two liquids; your motor takes just the diesel. Kept in a tank of its own, AdBlue is sprayed into the exhaust stream and cleans it. 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 your boot or under the bonnet. At the petrol pump, your diesel side gets filled all the time. Much less often, the AdBlue side is filled — normally from a bottle, by someone thinking about where it goes. It's in that gap that the slip lives. ## AdBlue in your diesel tank around Shamley Green: how it happens Carelessness rarely explains it. Instead is three things coming up together. The warning comes first. As AdBlue runs low the car tells you, and if it runs out completely, your vehicle goes into limp mode. So the top-up is done in a hurry: on a driveway off B2128 before work, or in the car park at The Red Lion Inn on the way home. New-to-you motors come second, as well. Hire cars, new motors and company vehicles place their fillers in new places, and habit goes for the cap used on the old one. A spouted bottle meets no obstacle at a diesel filler no more than at an AdBlue one. And so the tip, once started, carries on. Lordshill Common or the middle of Shamley Green: it is the same few seconds either way. ## The AdBlue filler and your diesel filler: telling them apart Be it a Shamley Green forecourt or a driveway out in Ridgebridge Hill, take a few seconds over these before anything is poured in. - The cap. The AdBlue cap is frequently blue, or marked "AdBlue". Your diesel cap normally is not. Read it instead of going by where it sits. - Many vehicles fit AdBlue the smaller neck of the two. - Open the flap and check for a label — plenty of vehicles show which belongs in which filler just there. - The handbook says where it lives when your filler is not next to your diesel cap: the boot, or under the bonnet. - The previous driver will know. Ask as you collect a rental or fleet car — at Chilworth's car park, perhaps — rather than once the warning appears. ## AdBlue top-ups that never reach your diesel tank A routine for the day the light comes on, wherever around Surrey that is. - Not in a rush on the side of Guildford Road, not on a slope, not with your motor running: park then switch off first. - 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 the diesel cap is still closed before you lift the bottle — and leave the vehicle on. - Tip slowly, using the bottle's own spout. Stop when it is full or when the bottle is empty. - Close the cap, and check once more — confirm your diesel cap remained closed the whole time. After that, start your car. Stop there if you find, at stage two or three, that you have already poured into the diesel side. Never go on to step five. ## AdBlue in the diesel tank already, around Shamley Green? Don't start the engine: that's how the short order of things begins. The fuel pump starts on many diesels the moment your ignition goes on — and so keep it off. AdBlue doesn't mix with diesel — it sinks to the bottom of the tank, where the fuel is pulled from — so don't top up with diesel to thin it. Ask the attendants to help roll your car away from the pump if you're on a forecourt — the Asda, the Shell or somewhere else. On your own drive around Shamley Green? So the vehicle remains put. Where the engine has run already, pull over somewhere safe then turn it off. Come off the M25 — under 10 miles out of Shamley Green — at the next junction. Distance counts — a short hop across Shamley Green makes a smaller job than heading under 50 miles towards Chichester — so tell us roughly how far it went. ## What takes place when we get there in Shamley Green Wherever your car came to rest, be it outside Wonersh and Shamley Green CofE Aided Primary School, near The Arbuthnot Hall or at home, the van comes to it. Our engineers ask what was put in, about how much, and if it's run, because those replies decide the work and the price. The price is given over the phone, before any van leaves. After that: a drain, then a full flush of the entire system. AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it does not wash out on its own — which is why that counts more with AdBlue than with petrol. A test is last: before that, fresh diesel goes in, and your filter is cleaned or replaced if necessary. Next our technicians start the car and confirm it runs smoothly before leaving. Most jobs are done in about half an hour once our engineers arrive, as long as the motor has not run — and the pumps we use are fine on a busy forecourt yet quiet at night outside a house. Your insurer will ask for the engineer's report and your VAT invoice, and you get both once this job is done. Payment comes on the day, with no money upfront. Plenty of insurance policies include misfuelling cover, and so it's worth checking yours whilst we are on the way. ## About Shamley Green and where it is Shamley Green is a small village in Surrey, situated inland at an elevation of 57 metres, and is characterized by its predominantly detached housing stock. Shamley Green lies near several common lands, including Lordshill Common, Norley Common, and Stroud Common, which provide recreational spaces for residents. Shamley Green is located approximately 28 miles from London, making it a rural retreat within commuting distance of the capital. Shamley Green has a population of around 872 residents, according to recent estimates. ## AdBlue drains round Shamley Green, and Surrey beyond Being a rural village, Shamley Green has the same vans as nearby areas — Norley Common, Stroud Common — right through GU postcodes and the wider area beyond. A postcode starting GU5 0 gets the van to you fastest. Shifting the vehicle is not needed. Wherever it stands — near Christ Church Shamley Green, on a lay-by heading to Long Common, at home — that is where it gets emptied. Assuming won't help at the back of War Memorial, close to a border, or somewhere awkward to pin down; ring and ask. ## For Shamley Green motorists, the short version Tip no AdBlue till you have read the cap. Even so AdBlue in the diesel tank? Petrol in Diesel will drain it wherever it stands, anywhere around Surrey: switch the car off then call 0333 366 0103.