--- title: Explained: AdBlue in a Diesel Tank Glossop canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/glossop-derbyshire/ location: Glossop county: Derbyshire latitude: 53.443290 longitude: -1.948880 service: AdBlue in a Diesel Tank updated: 2026-10-10 --- # How It Happens and How to Avoid It: AdBlue in a Diesel Tank in Glossop Pause here for a moment if the diesel tank already holds AdBlue in it: ignition off, engine off, then ring 0333 366 0103. Usually, if your motor has not turned, it's drained and thoroughly rinsed where the vehicle sits around Glossop. The rest of this page covers why it occurs and how to ensure it doesn't — useful if you're reading before it has happened. ## AdBlue in a diesel motor, and its separate tank Diesel goes to the engine — yet plenty of newer diesels seen around Glossop and Lower Dinting hold a second liquid as well. Stored in a tank of its own, AdBlue is sprayed into your exhaust stream and cleans it. There's a filler for every tank. Many of motors have a single flap for both, whereas some put the AdBlue filler to your boot or under the bonnet. Diesel gets filled at every forecourt call-out, week in, week out. Seldom filled, AdBlue usually goes in out of a bottle, tipped by someone who has to stop and think which cap to use. It's in the gap that the error happens. ## AdBlue in your diesel tank in Glossop: how it occurs It's rarely carelessness. Three things tend to line up. On a drive off High Street East before work, or in the car park outside Norfolk Arms on the way home: that is where the hurried top-up takes place. What is the reason for the rush? As AdBlue gets low your car tells you, and if it's gone, limp mode follows. Next, the hand goes for the cap it would have used on the old car — since a rental car, a new vehicle or a company car places the fillers where your last one didn't. 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 once it has started. It takes seconds, be it out in Whitfield or right in the heart of Glossop. ## Which filler is for AdBlue, and which for diesel? Look at these before pouring, at a forecourt around Glossop or a drive over in Hobroyd. Seconds, no more. - The cap. The AdBlue cap is commonly blue, or marked "AdBlue". The diesel cap usually isn't. Read it instead of going by position. - On many cars, size tells: AdBlue gets the smaller filler neck. - Check inside your fuel flap: many vehicles carry a label there showing which fuel goes where. - The handbook says where it is when your filler isn't next to your diesel cap: the boot, or under the bonnet. - 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 outside the nearest station. ## AdBlue top-ups that never reach the diesel tank On the day the light comes on — anywhere you are around Derbyshire — a routine to follow. - Not in a rush on the side of Victoria Street, not on a slope, not with your engine running: park and switch off first. - Silly as it sounds, speaking "AdBlue" out loud as you unscrew the cap works — after you have found your filler and read it. - Leave your diesel cap on. If both sit under one flap, check the diesel cap is still closed before you lift the bottle. - Finish when the tank is topped up or the bottle runs dry; until then, pour slowly through its built-in spout. - Shut the cap, and look again — making sure your diesel filler remained shut the whole time. After that, start the vehicle. Stop there if you find, at stage two or three, that you have already poured into the diesel side. Leave out stage five altogether. ## Put AdBlue in your diesel tank in Glossop already? Don't start your engine: that's where the short order of things starts. The fuel pump starts on many diesels the moment the ignition is switched on — so keep it off. Do not top up with diesel to dilute it: AdBlue does not mix with diesel, it sinks to the bottom of the tank, where the fuel is pulled from. At a forecourt — Esso, another forecourt nearby or any other — the staff will usually help roll the car clear, when you ask. Leave it where it is if you are on your own drive around Glossop. Stop as soon as it is safe and switch off, if the engine has already run. The next exit means where to come off when you are on the M67, under 5 miles from Glossop. Tell us roughly how far it went: a run towards Manchester, under 15 miles away, is a bigger job than a short hop across Glossop. ## Our arrival around Glossop, and what happens next Anywhere the car came to rest, be it outside Duke of Norfolk CofE Primary School, near Glossop Town Hall or at home, our van comes to it. We ask what got in, roughly how much, and whether it's run, because the answers settle this work and our quote. The quote comes on the call, before any van leaves. Next: a drain, then a thorough 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 matters more here than with petrol. The fuel filter is flushed, or replaced where it needs to be; clean diesel goes in; and your car is tested. Next our technicians start it and check it runs properly before leaving. Unstarted cars usually mean a half-hour job after the moment we arrive. The equipment is fine on a live filling station, and quiet enough for a residential street late at night. The insurer will ask for the engineer's report and the VAT invoice, and both are yours at the end. Payment comes on the day, with no deposit. It's worth checking your insurance as the van travels to you: misfuelling cover comes with plenty of policies. ## About Glossop itself Glossop is a town in Derbyshire, situated on the River Etherow and surrounded by the Pennine hills. Glossop sits at an elevation of 157 metres, with its terraced housing reflecting its industrial heritage. Glossop is located near several smaller communities, including Whitfield and Old Glossop, and is close to the city of Manchester. Glossop has a population of approximately 16551 people, making it a significant urban centre in the region. ## AdBlue drains across Derbyshire, Glossop included Whitfield Park and Old Glossop are among the places around Glossop, a riverside town, that the same vans cover, over SK postcodes. Fastest of all: give a SK13 8 postcode for the van. Shifting your car is not needed. Our technicians drain it where it is — a side street close to The Partington Players Theatre, a lay-by on the way to Harehills Park, a drive. Tricky to pin down, like the back of War Memorial? Close to a border? Checking is better than assuming, and so phone. ## In short, for Glossop people Read the cap before you tip. If AdBlue has gone in your diesel tank anyway, leave the car off and call 0333 366 0103. Petrol in Diesel clears it where it stands, anywhere in Derbyshire.