--- title: AdBlue in a Diesel Tank Snape Hill: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/snape-hill-derbyshire/ location: Snape Hill county: Derbyshire latitude: 53.307410 longitude: -1.465210 service: AdBlue in a Diesel Tank updated: 2026-10-03 --- # How It Happens and How to Avoid It: AdBlue in a Diesel Tank in Snape Hill If AdBlue is already in your diesel tank, stop reading for a moment: leave the motor and the ignition off and phone 0333 366 0103. A drain and a full flush, carried out just where the car stands around Snape Hill, is normally all it takes when found before the engine runs. Not happened yet? Further down, the page covers the reasons it happens and the how to prevent it for good. ## Why does AdBlue in a diesel vehicle need its own filler? Many newer diesels on the roads round Snape Hill and Dronfield carry two liquids, not one. Diesel goes to the engine. Your exhaust, not the engine, is where AdBlue ends up: dosed into the fumes to fresh it, from a separate tank. Each tank has its own filler. Many of cars have a single flap for both, whereas others move the AdBlue filler to the boot or under the bonnet. Diesel gets filled on each forecourt visit, week in, week out. Seldom topped up, AdBlue usually comes out of a bottle, tipped by a driver who must stop and think which cap it needs. That gap is where the error lives. ## AdBlue in your diesel tank in Snape Hill: how it occurs It's hardly ever carelessness. Three things tend to line up. The warning comes first. As AdBlue runs low your car tells you, and if it runs out altogether, your vehicle goes into limp mode. So the top-up is done in a hurry: on a drive off Snape Hill Lane before work, or in the car park at Yew Tree on the way home. Next, the hand reaches for the cap it knew on the old vehicle — because a hire car, a new motor or a company car places the fillers somewhere your last one did not. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the tip after it has started. Whether it happens in Holmley Common or the middle of Snape Hill, it's the same few seconds. ## Which filler is for AdBlue, and which for diesel? Whether a Snape Hill forecourt or a drive out in Bowshaw, take a couple of seconds over these before anything goes in. - Colour and marking: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap usually doesn't. Go by the cap, not its position. - On plenty of vehicles, the size gives it away: AdBlue has the smaller filler neck. - A label inside your fuel flap frequently shows which fuel goes where, on many motors. Check for it. - The handbook shows which it lives when your filler isn't next to your diesel cap: your boot, or under the bonnet. - The previous driver knows. Ask when you collect a rental or fleet car — at Dronfield's car park, perhaps — not once the light appears. ## How to top up without AdBlue in the diesel tank On the day the light comes on — anywhere it is around Derbyshire — a simple routine to use. - Switch off after you park — flat ground, motor off, and never in a rush beside Green Lane on the verge. - Find the AdBlue filler, read the cap, and say the word "AdBlue" out loud as you unscrew it. It seems silly. It does the trick. - The diesel cap stays on. When the two sit under a flap, make sure it is closed before lifting the bottle. - Using the bottle's own spout, pour slowly — and stop when it is full or the bottle is empty. - Before you start your car, close the cap and look again that your diesel cap never came off. Find at step two or three that it's already gone into your diesel side? So stop right there. Step five stays out. ## Snape Hill: already put AdBlue in the diesel tank? Do not start the motor: that is how the short order of things begins. Don't switch the ignition on; on plenty of diesels that alone runs the fuel pump. AdBlue does not mix with diesel — it sinks to the bottom of your tank, where the fuel is pulled from — so don't top up with diesel to dilute it. If you are on a forecourt, whether it is the Total or the Sainsbury's, ask the attendants to help push the vehicle away from the pump. Your own driveway around Snape Hill is where it should stay. Stop as soon as it is safe then switch off, if your engine has already run. Come off the M1 — under 10 miles out of Snape Hill — at the first exit. About how far did it go? Crossing Snape Hill is smaller work than a trip of under 10 miles to Sheffield, and so say. ## What occurs when we arrive around Snape Hill Wherever the vehicle has stopped, whether outside Lenthall Infant and Nursery School, near St Pauls or at home, the van travels to it. Both the work and our quote depend on three answers — what liquid, which amount, and if it has run — so our technicians ask. The price comes on the call, ahead of any van leaving. Then the tank is cleared and the fuel system rinsed thoroughly. With AdBlue that matters more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, so it does not wash out on its own. A test is at the end: before that, fresh diesel is added, and the fuel filter is cleaned or changed as needed. Then we start it and check it runs correctly before we leave. If your engine has not run, the majority of jobs take about half an hour once we are there, using pumps that are safe on a working forecourt and quiet enough to use outside a house after dark. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. It is worth looking at your policy as the van travels to you: misfuelling cover is included with plenty of policies. ## About Snape Hill and where it is Snape Hill is a suburban area in Derbyshire, situated near the River Rother and close to the city of Sheffield. Snape Hill sits at an elevation of 171 metres, with semi-detached housing being the predominant type of accommodation in the area. Snape Hill is located near several other places, including Holmley Common and Coal Aston, and is around 5 miles from the centre of Sheffield. Snape Hill has a population of approximately 5098 residents. ## AdBlue drains around Snape Hill and across Derbyshire Throughout S postcodes, our teams covering Snape Hill — a residential suburb — work the surrounding spots too, Holmesdale and Coal Aston among them. A postcode starting S18 2 gets our van to you fastest. The car does not need to shift. Draining takes place right there, whether a drive, a street near The Pioneer Club, or a lay-by on the way to Cliffe Park. Ring and ask instead of assuming if you are close to a boundary, or somewhere hard to describe, like the back of The Holy Spirit Church. ## For Snape Hill motorists, the short version Always, the cap; then, the pour. Still AdBlue in the diesel tank? Petrol in Diesel can empty it wherever it stands, anywhere around Derbyshire: switch the vehicle off then ring 0333 366 0103.