--- title: What Now? AdBlue in a Diesel Tank Ruislip canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/ruislip-greater-london/ location: Ruislip county: Greater London latitude: 51.576910 longitude: -0.427100 service: AdBlue in a Diesel Tank updated: 2026-10-18 --- # AdBlue in the Diesel Tank in Ruislip, and What to Do Next All of that turns on one detail: if the motor has been run since the AdBlue went in — more than anything else. Over in Ruislip Common or right around Ruislip, an unstarted engine should stay that way. Normally this means draining and properly flushing it right there in Ruislip — so keep the ignition and motor off and call 0333 366 0103. Stop the moment you safely can and switch off, if it has already run. It is a larger job, yet step one doesn't change. Wherever around Greater London it happened, one of the cases below fits yours. ## On a Ruislip forecourt with AdBlue in a diesel Just now, bottle yet in hand, it dawns on you that the cap you took off was the wrong one, right at the petrol pump. Maybe you're at the Murco, maybe at the Gulf, perhaps somewhere else in Ruislip. What it means: this is the best location to find out. Only your tank has AdBlue; no part beyond it has taken it in. Do this: keep out of the car, even if the queue wants clearing. Get the attendants to lend a hand rolling it to a space, hold on to the bottle, then phone us right there. If it can't be moved, it can be drained at the petrol pump: the equipment is explosion-proof and fine on a busy forecourt. ## Ruislip, at home: AdBlue in your diesel tank Several days had gone by with the dash light on. You bought a bottle, poured it in on the driveway, and only when you put the empty bottle in the recycling did you look a second time at the cap. Drives close to Eastcote Road get it as much as any other street. The point: no driving since makes it almost as good to spotting it at the petrol pump. On the bottom of that tank is exactly where AdBlue waits, because it will not mix with diesel — and a night going by changes nothing of the difference. Keep the keys in the house tonight — otherwise a person may drive it away at breakfast — then phone us. In West Ruislip or right here in Ruislip, the draining is done at your drive. Late-night empties beside a house are no problem: the pumps are quiet. ## Ruislip: set off with AdBlue in a diesel? A mile or two after filling up, the engine started playing up: roughness, smoke, less power, lights on your dash. High Street, perhaps, or the route towards St Albans — a run of under 15 miles. Meaning? The fuel pump has sucked the AdBlue up. It's been through your filter and your lines and, the further you went, into the high-pressure pump and your injectors. Each restart, like every mile, pushes it deeper. Stop safely — that's the first step — then turn everything off. Ruislip lies under 3 miles from the M40; there, come off at the next junction rather than pressing on for the services. It will not have cleared, so there is no point restarting to check. About what distance had it go? Say so as you phone. ## AdBlue in the wrong tank: hire, lease and company cars Seven days ago, it was new to you. On your own car, AdBlue is absent or somewhere else. On this one, its cap is just by the diesel cap — a surprise to you. Anyone, wherever in Greater London, could make it. What it means: the same as the scenarios above, depending on whether it's run, with one more step. Many hire and company agreements want the owner to approve work on the vehicle. Sorting it before the van turn up is quicker, so ring the hire company or your fleet manager, then us. Stranded by St Martins of Tours or at West Ruislip until someone replies, your vehicle stays turned off the whole time. ## Ruislip: unsure if it was AdBlue in the diesel tank? Sometimes the honest answer is "I think so". Too light, the bottle; a hint of ammonia near your filler; no clear memory of the cap. Sound familiar? The gates of Bishop Winnington-Ingram CofE Primary School in a rush, perhaps, or a friend's driveway out in Eastcote Village. What it means: a little spilled around the filler does no damage to the motor. Once it's inside the diesel tank, though, it does. Turning on the car cannot tell you which, and if there is AdBlue in your tank it will pull it in. Assume it was put in, and never start your engine. Ring with what you saw: we would rather find a tank free of AdBlue than empty one once the engine has been run. ## Ruislip: what every AdBlue drain has in common No matter the situation, one opening is used. Forecourt, driveway, The Hop & Vine's car park or a street beside British Legion — the van comes to your car, and three answers come next: what liquid, what amount, and if it ran. Those answers decide the work, and you get our price by phone, before anyone heads out. Draining the tank comes first, followed by a careful flush — more vital with urea than with petrol, since crystals and corrosion won't go on their own, however long it sits. Last come the filter, cleaned or replaced as needed; fresh diesel; and a test of the car. Where the motor has not been started, expect roughly half an hour once we arrive, for most cases. The last step is starting it. Our technicians make sure it runs correctly on clean diesel before we leave. The entire job is done where your car is, and if it is spotted quickly, long-term damage is very unusual. For your insurer: an engineer's report and the VAT invoice. For you: payment that day, nothing in advance. Dig out your insurance before we arrive: misfuelling cover is included in plenty of policies. ## About Ruislip, for a moment Ruislip is a locality in northwest London, situated near the River Pinn and the Grand Union Canal. Ruislip sits at an elevation of around 48 metres, with its riverside setting influencing the local environment. Ruislip is characterized by its predominantly detached housing stock, with nearby areas including West Ruislip, Ruislip Gardens, and Ruislip Manor. Ruislip is located approximately 13.7 miles from central London, with the nearest city being St Albans, about 12.7 miles away. ## AdBlue drains around Ruislip, and across Greater London too Over HA postcodes, the vans covering Ruislip — a small village — reach surrounding places too, Ruislip Gardens and Ruislip Manor included. A postcode starting HA4 7 is the quickest way to tell us where you are. No moving is needed, be it stopped centrally in Ruislip or on a lay-by en route to Manor Farm, so leave it put. The van empties it in place. Tricky to explain? Close to Manor Farm Library or a county line? Asking beats guessing, so phone. ## Your scenario, summed up Not run yet: keep it off and ring. Already run: stop, switch off and call. Either way, Petrol in Diesel takes it from there around Ruislip and anywhere across Greater London on 0333 366 0103.