--- title: Ratby: AdBlue in a Diesel Tank? Don't Start canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/ratby-leicestershire/ location: Ratby county: Leicestershire latitude: 52.648300 longitude: -1.245330 service: AdBlue in a Diesel Tank updated: 2026-10-12 --- # Ratby: AdBlue in the Diesel Tank? Leave It Off Motor off, ignition off: that's how you begin if AdBlue has got into the diesel tank. AdBlue is urea dissolved in water. As it is water-based, it won't ignite and never combines with diesel; damage just starts once your pump begins drawing it. If your engine hasn't run yet, AdBlue in a diesel tank is generally emptied and thoroughly flushed where the car stands in Ratby. First, ring us on 0333 366 0103. ## Those opening minutes: AdBlue in the diesel tank in Ratby To do: - Keys out — then nobody can power anything on. - Put the hazard lights on if you are at all close to moving traffic. - Which fluid, and about what amount? Save the bottle or the receipt, and our technicians will see. - Call us from where you are. A postcode starting LE6 0, or the name of the nearest street, gets the van to you without a search. Not to do: - Don't start your motor, even for a moment to move the vehicle. - Plenty of diesels run their pump the moment the ignition goes on, so leave the vehicle off. - AdBlue doesn't mix in diesel — it separates out — so adding extra diesel will not thin it. - Don't drive the car anywhere, not even a short stretch down Burroughs Road. - Do not try to drain the vehicle yourself by the kerbside. Ask the people behind the counter to help you roll the car off the pumps if you're at a forecourt in Ratby, whether it is the Morrisons or somewhere else. At home, the vehicle remains just where it was left. ## What AdBlue does in a diesel tank Not your motor but your exhaust is where AdBlue belongs. Its own tank keeps it, and from there it's fed into your exhaust, where it cleans the fumes. Nothing in an injection pump is made for this liquid — and none of that was meant to travel that way. Fuel mixes; AdBlue, once tipped in, will not. The behaviour is nothing like diesel's. The intake sucks fuel from the deepest part of your tank, and that is precisely where AdBlue ends up: as it is denser than diesel, it sinks. The first thing the fuel system pulls through, once it runs, is the AdBlue. So a car that had AdBlue poured in on a drive in Kirby Fields last night, and has not been started since, is still the simple case: the AdBlue is lying at the bottom of that tank, and nothing has pulled it in. It causes two kinds of harm from there. As its water goes, the urea left behind crystallises, and the crystals block filters and settle in fine passages. And it's corrosive to some of the metals a fuel system is made from, so it keeps running on the components it reaches for as long as it stays there. Pipes holding AdBlue mean harm overnight for a vehicle parked around Ratby. Only inside your tank, it stays the same. Then there's the water: it offers no lubrication to the parts that need it the most — the injection pump and each injector. ## Why AdBlue in a diesel is regularly more significant than petrol Petrol pumped into a diesel on Shell's forecourt makes the fuel watery — that's the main problem. Mixed into your diesel and sitting unused, it's harmless at that stage; running the engine is the harm. AdBlue in a diesel is a different matter: not thin fuel, yet no fuel at all. Not burning, it can't simply be run through. Nor can it be watered down, because it splits back out — and the following fill will not rinse away crystals or corrosion. So the flush counts for more with AdBlue, and turning your key "to see", in the heart of Ratby or out in Newtown Unthank, does more harm than nearly any other slip. With AdBlue, the good news is no distinct from petrol. If your engine has not run, the AdBlue is still in the tank, and the tank is the simplest part of a fuel system to clear, wherever across Leicestershire your car is standing. ## How does AdBlue end up in a diesel tank in Ratby? It's not on purpose. Many vehicles have the AdBlue cap beside the diesel one, occasionally under a single flap, and muddling them up is easy after dark. A bottle picked up while driving home and poured in outside the house, rather than at the forecourt, is the usual story. The ways it happens are few and familiar. Rushing, outside Ratby Primary School, after a warning light flashed on during the school run, a parent tops up the vehicle. A bottle is poured in at the end of the day on a drive just off Berry's Lane. Or your car is topped up in the car park at The Bulls Head, in poor light, by a person who has never opened that flap before. The least known cars get it the most — rentals, new ones, company ones, and the spare vehicle of a family with one of each fuel types. Anywhere across Leicestershire, Ratby included, the slip does not change, and nor does the first step: keep it off. ## Ratby: started the motor with AdBlue in your diesel tank? The AdBlue has left that tank, then. The filter and lines have had it pulled along, and some running time carries it on to the high-pressure pump and every injector. Maybe coming back from Ferndale Park, or midway across Ratby, your motor may go rough, smoke, lose pace, light up your dash or stall. Stop as soon as it is safe, switch off, and do not restart it to check. With each start, more of that is pulled through. If you were on the M1, under a mile from Ratby, come off at the next exit and stop somewhere safe rather than pressing on. How far it went counts. A couple of hundred yards across Ratby to the car park by Ratby Library is a very different job from a run towards Leicester, under 5 miles away, with the AdBlue reaching further into the fuel system with every mile. Roughly how far had it come? Tell us. Wherever the vehicle came to a halt is where all of it gets done, even with more to clean out after the motor has been started. When it's spotted early, lasting damage is very rare. ## What draining AdBlue from a diesel involves around Ratby Our engineers come to your car, wherever it has stopped in Ratby: a side street near Ratby Post Office, a drive, a lay-by or a forecourt. Three answers decide the job, and so first we ask what got in, roughly the amount, plus whether your engine has run. Then that tank is cleared where the car stands, and so the tainted fuel and the AdBlue come out together. The fuel system is purged thoroughly, which matters more with AdBlue than with petrol, because what it leaves behind doesn't rinse out on its own. After that, the fuel filter: cleaned, or replaced when it has to be. Then fresh diesel, then a check of your vehicle. If the engine has not run, most jobs take about half an hour once our technicians arrive. Low-noise enough to use outside a house at night, and fine on a busy forecourt, the pumps are explosion-proof. The final step is to prime the fuel system on fresh diesel. You set off as soon as we have fired it up, and it makes no difference whether the car is on a driveway in Ratby or in a space outside Leicester. The test before our engineers leave is that it runs smoothly on new diesel. We do it all wherever the vehicle has ended up, and it never needs to go to a workshop. Afterwards, there is the paperwork for your insurer: a VAT invoice plus a written report from the engineer. ## About Ratby and where it is Ratby is a village in Leicestershire, situated on the River Soar, with a mix of semi-detached housing and other residential properties. Ratby sits at an elevation of around 94 metres, close to the nearby villages of Kirby Muxloe and Groby. Ratby is located near the city of Leicester, approximately 4.8 miles to the west, and is part of the wider East Midlands region. Ratby has a population of around 1524 people, living in a variety of housing types, predominantly semi-detached homes. ## AdBlue drains across Ratby and Leicestershire Throughout the LE postcode area, the teams answering AdBlue jobs in Ratby reach most of Leicestershire too, Kirby Muxloe, Groby and Bondman Hays among them. Near a boundary, or anywhere tricky to explain? Checking beats assuming, so phone. Wherever your car stands — your driveway at home, a residential street, a parking area, a forecourt — our technicians empty it on the spot, with no need to take it to us; that suits Ratby, a village, well. ## AdBlue in a diesel tank around Ratby: the cost of fixing it Every job differs, and so not one single quote would be fair. What shifts the price is, firstly, whether your engine has been running and for how long; then how much AdBlue was put in; and then where the car is and whether our van can reach it safely, which is easier on an open drive than in a tight spot behind St Philip & St James. What went in, how much, plus whether the engine ran: each Ratby enquiry opens by asking exactly that, before a quote, never after. Given them, the range shrinks to a single fixed figure. You hear that quote by phone, before anybody heads out, and you pay on the day, by card or by phone, with nothing upfront. Check your policy while we're on the way: plenty carry misfuelling cover. ## Ratby: still beside the vehicle? Then, the most helpful thing to do with your vehicle is to not touch it. Motor off, keys out, ignition off. Petrol in Diesel handles the remainder, in Ratby or anywhere in Leicestershire, after you ring 0333 366 0103 to say it was AdBlue, about how big an amount, and if the engine ran.