--- title: St Marys: AdBlue in a Diesel Tank, What Next canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/st-marys-hampshire/ location: St Marys county: Hampshire latitude: 50.902790 longitude: -1.395250 service: AdBlue in a Diesel Tank updated: 2026-10-22 --- # AdBlue in the Diesel Tank in St Marys, and What to Do Next Everything hinges on one fact: whether the motor has started after the AdBlue went in — more than anything else. Wherever the vehicle stands — Southampton, St Marys — never run a motor that has not run yet. Switch nothing on, call 0333 366 0103, and count on a thorough flush plus a drain, carried out right where the vehicle stands around St Marys. Pull over the minute you safely can and switch off, if it has already run. The job is bigger, but the first step is the same. Match what happened to a situation from the list below, anywhere around Hampshire you happen to be. ## St Marys forecourt: AdBlue in a diesel at the pump Picture it: stood by the petrol pump, gripping the bottle, you realise the filler you opened was not the right one. Possibly you are at the Texaco, maybe at the Esso, maybe somewhere else in St Marys. What it means: this is the best spot to find out. Still in the tank, and nothing pulled through: that is where the AdBlue is. Next: resist the urge to start it just to free up the pump. Three jobs: a shove into a bay with the attendants assisting, the receipt kept, and a call to us from the forecourt. Emptying it there at the pump is possible when it can't be shifted, since the equipment is explosion-proof. ## St Marys, at home: AdBlue in your diesel tank Days had passed with the dash light on. A bottle bought at the garage, tipped in on the drive — and it's just by the bin that the cap got a second look. It occurs on drives just off Maryfield as regularly as anywhere. The upshot: no driving since leaves it almost as good to finding it at the petrol pump. Being unable to blend, AdBlue drops to the base in the tank and stays. A night standing changes nothing. Put your keys indoors overnight — otherwise a person may drive it away at breakfast — then call us. Your driveway is where it gets drained, be it around St Marys or Chapel. Night-time clears outside a house are fine: the pumps are low-noise. ## On the road around St Marys with AdBlue in a diesel You filled up, set off, and a mile or two later your motor began to run unevenly, smoke, lose power or light up the dashboard. Anywhere along The Compass or on the road towards Southampton — under a mile away. The upshot: the system has pulled AdBlue through already. It's been through your filter and the lines and, the further you went, into your high-pressure pump and the injectors. Every restart, like every mile, pushes it deeper. Pull in somewhere safe — that is the first step — then turn everything off. St Marys lies under 5 miles from the M27; there, pull off at the next junction instead of pressing on to the services. Do not restart the vehicle to see if it has cleared; it will not have. Tell us know the distance driven as you ring. ## AdBlue in the wrong tank: hire, lease and company cars Seven days ago, the car was new to you. Your own car either has no AdBlue or keeps it elsewhere, so nothing told you the AdBlue cap was right next to your diesel. Across Hampshire, nobody is immune. Put simply: an extra stage on top of the cases above, which depend on whether it's run. Plenty of hire and company contracts need the owner's approval before work. Next: ring the hire company or your fleet manager first, then us — sorting it before we arrive is quicker. If you're stranded in the car park outside Southampton Town Quay, or by Saint Mary's Church, while you wait for an answer, leave the vehicle off. ## Not sure it was AdBlue in the diesel tank, St Marys? At times, "I think so" is the most you can honestly say. The bottle is lighter than it should be, there's a faint smell of ammonia around your filler, and you cannot remember which cap you took off. The gates of Hope Community School Southampton in a hurry, perhaps, or someone's drive out in Nichols Town. The upshot: your engine isn't hurt by some AdBlue splashed on the filler. The diesel tank with AdBlue inside is a different story. Turning on your car will not tell you which, and if there is AdBlue in your tank it will draw it in. What to do: treat it as if it was put in. Do not start the vehicle. Ring and give the details: we would sooner confirm a clean tank than empty one once your motor has run. ## St Marys: what each AdBlue drain has in common Every situation has the same opening to the work. Filling station, drive, The Joiners's car park or a street by James Street Church — our van comes to your vehicle, and three questions follow: which liquid, which quantity, and if it ran. Those replies determine the work, and you get the quote on the phone, before anybody sets off. Emptying your tank comes first, followed by a full flush — more vital after urea than with petrol, because crystals and corrosion won't clear on their own, no matter how long you wait. Finally are the filter, cleaned or replaced as needed; fresh diesel; and a test of your car. The majority of unrun cars are a half-hour job after the moment we turn up. The final step is starting it. Before we go, it is checked to confirm it runs smoothly on new diesel. The entire job is done where your car is, and if it is caught quickly, lasting damage is very rare. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Check your insurance before we arrive: misfuelling cover comes built into many policies. ## About St Marys, for a moment St Marys is a suburban area located on the coast of Hampshire, with an elevation of around 8 metres above sea level. St Marys sits adjacent to the city of Southampton, with which it is closely tied economically and socially. St Marys is characterized by a high proportion of flat dwellings, reflecting its urban setting. St Marys is one of several suburban areas in the vicinity, including Chapel, Crosshouse, and Kingsland Place. ## St Marys and Hampshire: AdBlue drains across the area Throughout SO postcodes, the vans covering St Marys — a residential suburb — reach surrounding towns as well, Crosshouse and Kingsland Place included. Giving us your SO14 5 postcode pins you quickest of all. Whether the car is on a lay-by on the way to The Compass Park or in a car park in the middle of St Marys, it does not need to shift. Draining happens on the spot. Ring and ask rather than guess if you are by Kingsland Market, on a boundary, or somewhere awkward to pin down. ## Your scenario, summed up Not run yet: keep the vehicle off and ring. Run by now? Pull over, turn off, ring. Petrol in Diesel takes over the remainder whichever case, in St Marys and Hampshire, on 0333 366 0103.