--- title: AdBlue in a Diesel Tank Stow cum Quy? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/stow-cum-quy-cambridgeshire/ location: Stow cum Quy county: Cambridgeshire latitude: 52.220680 longitude: 0.222850 service: AdBlue in a Diesel Tank updated: 2026-10-13 --- # Stow cum Quy: How Does AdBlue End Up in a Diesel Tank, and How Do You Prevent It? If AdBlue is already in your diesel tank, stop reading for a moment: leave the motor and the ignition off and call 0333 366 0103. A drain plus a thorough flush, done just where the vehicle stands around Stow cum Quy, is normally all it needs when caught before the engine runs. Reading in advance? Then what follows covers how it comes about and how to stop it ever happening. ## Why does AdBlue in a diesel motor need its own filler? Diesel feeds your motor — yet plenty of modern diesels seen about Stow cum Quy and Lode carry a second liquid too. Stored in a tank of its own, AdBlue is sprayed into your exhaust gas to clean it. There is a filler for every tank. On a lot of cars the two sit side by side under the same flap; on others the AdBlue filler is in the boot or under the bonnet. Diesel goes in on every forecourt visit, week in, week out. The AdBlue side is topped up far less regularly, normally from a bottle, and usually by somebody who has to stop and think where it goes. That gap is where the slip lives. ## Stow cum Quy: how AdBlue in the diesel tank occurs Rarely is it carelessness: normally three things coincide. First, the warning. Low AdBlue triggers a message from the vehicle, and letting it run out means limp mode — hence a rushed top-up, maybe before work off Stow Road, or at White Swan on the way home after work. Then, your hand goes for the cap it would have used on the old motor — since a rental car, a new car or a company car places the fillers somewhere your last one didn't. Third, the spout fits: a diesel filler or AdBlue filler, it goes in just as easily, and once the tip begins, no part halts it. Whether it takes place in Quy Waters or the middle of Stow cum Quy, it is the same few seconds. ## Telling the AdBlue filler from the diesel filler Whether a Stow cum Quy forecourt or a drive over in Teversham, spend a few seconds on these before anything goes in. - Where it sits can mislead; the cap does not. AdBlue caps tend to be blue or carry the name "AdBlue" — diesel caps normally do not. - Look at the size: the smaller neck is, on plenty of cars, the AdBlue one. - The flap. Look inside the fuel flap for a label. Plenty of motors say there which fuel goes where. - The handbook. If your filler isn't by the diesel cap, it's in your 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 pick up a hire or company car from somewhere like the car park at Cambridge North. ## AdBlue top-ups that never reach your diesel tank A routine for the day the light comes on, wherever in Cambridgeshire that is. - Park and switch off. Not on a slope, not with the engine running, and not in a rush on the side of Main Street. - Find the AdBlue filler, check the cap, and say the name "AdBlue" out loud while you unscrew it. It seems silly. It does the trick. - The diesel cap stays on. Where both share a flap, make sure it's closed before lifting the bottle. - Slowly is best, through the bottle's own spout, until it's full or the bottle runs out. - Close the cap, then look again — confirm your diesel filler stayed shut the whole time. Only then, start the vehicle. Find at stage two or three that it has already gone into your diesel side? Then stop just there. Skip stage five entirely. ## Put AdBlue in your diesel tank in Stow cum Quy already? Short order, then. Top of that: your motor stays off. Don't switch your ignition on; on many diesels that alone runs the fuel pump. AdBlue does not mix with diesel — it sinks to the bottom of the tank, where your fuel is pulled from — so do not top up with diesel to dilute it. Ask the staff to help push the vehicle clear of the petrol pump if you are at a forecourt — the Teversham Motors, the BP or somewhere else. Your own driveway in Stow cum Quy is the place it should stay. Stop as soon as it is safe then switch off, if the motor has already run. On the M11, under 10 miles from Stow cum Quy, that means the next exit. Mileage counts — a short hop across Stow cum Quy makes a smaller job than driving under 5 miles towards Cambridge — so tell us about how far it went. ## Our arrival in Stow cum Quy, and what takes place next We come to your car wherever it has stopped, whether that is outside Bottisham Community Primary School, close to Stow-cum-Quy or on your own driveway. What liquid was put in, the amount, and if it ran: we ask because those replies set both work and quote. On the phone call itself, you hear our quote — ahead of anything else. After that: a drain, then a full flush of the entire system. Unlike petrol, AdBlue forms crystals and attacks some fuel-system metals, and none of it clears out by itself. Hence it matters more. Filter cleaned or, where needed, swapped; fresh diesel in; and then a test of your vehicle. Your engine is started next and tested to be sure it runs correctly, all before we leave. Most jobs are finished in about half an hour after we arrive, provided the engine hasn't run — and the pumps our engineers use are safe on a live forecourt and quiet after dark outside a house. No money upfront; you settle up that day. At the end, the VAT invoice and the report from the engineer go to you for your insurer. It's worth checking your insurance as the van travels to you: misfuelling cover comes with plenty of policies. ## About Stow cum Quy and where it is Stow cum Quy is a small village in Cambridgeshire, situated on the River Cam and characterised by semi-detached housing. Stow cum Quy lies close to the city of Cambridge, with Quy Waters and Frog End nearby. Stow cum Quy has a population of around 545 residents and is located at an elevation of 17 metres, making it a low-lying riverside community. Stow cum Quy is also near the village of Bottisham, and is within commuting distance of London, 51.5 miles to the south. ## Stow cum Quy and Cambridgeshire: AdBlue drains across the area Being a village, Stow cum Quy has the same vans as surrounding areas — Frog End, Bottisham — all the way across CB postcodes and the wider area beyond. Quote a postcode that starts CB25 9, and our van gets there quickest. Shifting the car is not necessary. The drain happens right there, whether a drive, a street by Stow-Cum-Quy Village Hall, or a layby towards Anglesey Abbey (National Trust). Guessing won't help at the back of St Mary (Stow-cum-Quy Parish Church), on a border, or anywhere awkward to pin down; phone and check. ## Stow cum Quy people: the short version Pour nothing till you've read the cap. AdBlue in the diesel tank regardless? Leave the car switched off then call 0333 366 0103; Petrol in Diesel empties it where it stands, throughout Cambridgeshire.