--- title: Colinton Mains: AdBlue in a Diesel Tank? Don't Start canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/colinton-mains-city-of-edinburgh/ location: Colinton Mains county: City of Edinburgh latitude: 55.912030 longitude: -3.233640 service: AdBlue in a Diesel Tank updated: 2026-10-25 --- # AdBlue in a Diesel Tank in Colinton Mains? Don't Start It Motor off, ignition off: that is how you start if AdBlue has gone into your diesel tank. Urea mixed in water is all AdBlue is. It doesn't burn, it does not mix with diesel, and the damage it does starts when the fuel system draws it in. Caught before your motor has run, AdBlue in a diesel tank is generally a drain and a thorough flush, done where the vehicle is in Colinton Mains. First, phone us on 0333 366 0103. ## Your next steps right now, Colinton Mains: AdBlue in your diesel tank To do: - Pull the keys out, and so nobody switches your ignition on. - Hazards on, if moving traffic is anywhere near. - Hold on to your receipt or the empty bottle, and so you can tell us what went in and roughly how much. - The van finds you fastest with a postcode starting EH13 9, or just the name of a street close by, and so phone from the spot. Never do these: - Shifting your vehicle just a short way is no reason to start the motor. - Plenty of diesels power their fuel pump the moment the ignition goes on, and so keep the vehicle off. - Do not top up with diesel to dilute it. AdBlue doesn't dilute in diesel; it separates out. - Any driving at all is best avoided, even a short distance up Firrhill Loan. - Do not try to drain the vehicle yourself at the roadside. Rolling the car off the pumps is a job for attendants to help with, whichever Colinton Mains forecourt you are on, the Tesco included. On that drive, the car stays just as it was left. ## What AdBlue does in a diesel tank Not the motor but the exhaust is where AdBlue belongs. Kept in a separate tank, it is injected into the exhaust stream to treat the fumes. Nothing in an injection pump is made for this liquid — and none of it was intended to go through one. Poured in with the diesel, it stays apart rather than mixing — entirely unlike fuel. The pickup sucks fuel from the lowest part of the tank, and that's just where AdBlue settles: being heavier than diesel, it sinks. When your system runs, the AdBlue is first to be pulled through. Before then it sits underneath your diesel, which is why a car topped up in Craiglockhart yesterday and not started stays the straightforward one, provided no one turns your key. It does 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 is corrosive to some of the metals a fuel system is made from, and so it keeps running on the components it gets to for as long as it stays there. Where the AdBlue has reached the pipework, waiting till morning in Colinton Mains makes it worse. Inside that tank only, waiting does nothing. Then there is the water: it brings no lubrication to the parts that rely on it most — the injection pump and each injector. ## Why is AdBlue in a diesel commonly the bigger fault? Put petrol in a diesel at the Shell and you have a problem of thin fuel. Damage only comes from driving on it. Mixed into your diesel and left in that tank, it does none. AdBlue in a diesel is a different problem: not thin fuel, yet no fuel at all. Not burning, it cannot simply be run through. It does not stay mixed, so it cannot be diluted. And crystals and corrosion do not wash out with the next tank of fuel. That's why the flush counts more with AdBlue than with petrol, and why starting the engine "to see" costs more here than almost anywhere else, whether the vehicle is in Colinton or the middle of Colinton Mains. The good news is the same as with petrol. Never run? Then the AdBlue sits just inside the tank, the simplest bit of the entire system to empty, wherever your car has come to rest in City of Edinburgh. ## How does AdBlue end up in a diesel tank in Colinton Mains? No one means to do it. The AdBlue filler on many motors rests right next to the diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. Mostly it happens with a bottle bought on the way home and poured in on the drive, not at the forecourt. It tends to happen in a couple of familiar ways. Hurrying, outside the local primary school, after a warning light flashed on during the school run, someone tops up the car. A driver tips the bottle in at home, right off Firrhill Crescent, as the day ends. Or the vehicle is topped up in the car park at Hunter's Tryst, in poor light, by someone who has never opened that flap before. Rented cars, brand-new motors, company cars, or the second car in a home with both fuels: the least familiar cars get it the most. Anywhere in City of Edinburgh, Colinton Mains included, the slip doesn't change, and nor does the first step: leave it off. ## AdBlue in your diesel tank in Colinton Mains, and your engine started? Then the AdBlue has left your tank. Through your filter, along the lines, and — given any running time — into the injection pump and every injector: that's how far it has gone. Perhaps returning from Colinton Mains Park Wee Forest, or part way across Colinton Mains, the motor might run lumpy, smoke, lose power, flash the dash or stall. Stop as soon as it is safe, switch off, and don't restart the car to check. Each start pulls more of it through. Colinton Mains lies under 5 miles from the M8; if you were on it, leave at the next junction and pull up safely instead of carrying on. How far it went matters. A couple of hundred yards across Colinton Mains to the car park by Colinton Mains Community Centre is a very different job from a run towards Edinburgh, under 5 miles away, with the AdBlue reaching further into the fuel system with every mile. Let us know roughly how far it had come. Wherever the vehicle came to a stop is where all of it gets done, even with more to rinse out after the engine has been run. Very seldom does it leave lasting damage when it is spotted quickly. ## Draining AdBlue in a diesel in Colinton Mains: what it takes Our engineers come to your car, wherever it has stopped in Colinton Mains: a side street close to Greenlaw Rig Community Centre, a drive, a lay-by or a forecourt. Before anything else our engineers ask what got in, roughly how much, and whether your motor has run, since those answers settle this work. Next, emptying that tank right there removes the polluted diesel along with the AdBlue together. With AdBlue, far more than with petrol, flushing matters: the whole system is flushed right through since residue won't flush away unaided. A test of the car comes last, after fresh diesel goes in and the fuel filter gets flushed or, where needed, swapped. Not run? Then count on roughly half an hour once we are there for most jobs. The pumping gear is explosion-proof, and so a live forecourt is no issue, and it is quiet enough for a residential street late at night. Bleeding the fuel system with fresh diesel comes last. Starting the car comes next, and then you drive off from where the car is parked, outside Slateford or on a driveway around Colinton Mains. It's checked on fresh diesel to be sure it runs smoothly before we head off. We do it all wherever your car has ended up, and it never has to go to a garage. You get a VAT invoice and an engineer report after that, which is what insurers ask for. ## About Colinton Mains Colinton Mains is a suburban area located on the riverside in the City of Edinburgh, with a mix of housing types but predominantly flats. Colinton Mains sits near the Water of Leith, at an elevation of around 116 metres, and is close to neighbouring areas such as Oxgangs and Dreghorn. Colinton Mains is situated approximately 3.3 miles from Edinburgh city centre, making it a popular residential choice. Colinton Mains has a population of around 5759 people, according to recent estimates. ## AdBlue drains across City of Edinburgh, Colinton Mains included Oxgangs, Dreghorn and Greenbank are among the towns near Colinton Mains that the same vans serve, along with most of City of Edinburgh beyond, over the EH postcode area. If you're near a border, or somewhere hard to describe, ring and ask instead of guessing. Wherever your car stands — your driveway at home, a residential street, a car park, a filling station — our engineers drain it there, with no need to bring it to us; which suits Colinton Mains, a residential suburb, well. ## What does AdBlue in a diesel tank cost to sort out around Colinton Mains? There's no honest single price, because the jobs aren't the same. What changes the price is, first of all, whether the engine has been running and for how long; then how much AdBlue got in; and finally where your car is and whether a van can reach it safely, which is simpler on an open driveway than in a tight space behind St. John's Colinton Mains Parish Church. Which fluid got in, how much, plus if it ran: each Colinton Mains call opens with exactly that, ahead of a quote, not afterwards. With those replies, the range shrinks to a single firm figure. The price is given during the call, before anyone leaves; payment happens on the day, by card or by phone, and nothing upfront. Misfuelling cover is part of many insurance policies, so it pays to look at yours before the van arrives. ## In Colinton Mains and still next to the car? Then, do nothing — that is the most helpful move there is. Keys out; engine and ignition off. Say it was AdBlue, about how big an amount, and if the engine ran, on 0333 366 0103. After that Petrol in Diesel takes over, across Colinton Mains or anywhere in City of Edinburgh.