--- title: Tooting Graveney: AdBlue in a Diesel Tank, Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/tooting-graveney-greater-london/ location: Tooting Graveney county: Greater London latitude: 51.424050 longitude: -0.174010 service: AdBlue in a Diesel Tank updated: 2026-10-16 --- # How It Happens and How to Prevent It: AdBlue in a Diesel Tank in Tooting Graveney If AdBlue is already in your diesel tank, stop reading for a moment: leave your engine and your ignition off then phone 0333 366 0103. In Tooting Graveney, catching it before your engine runs usually leaves draining and a thorough flush on the spot. If you are reading before it has happened, the remainder of this page is about why it takes place and how to make sure it doesn't. ## Two fillers, two tanks: AdBlue in a diesel vehicle Plenty of current diesels on the roads about Tooting Graveney and Summerstown carry two liquids, not one. Diesel goes to your engine. AdBlue goes to the exhaust, where it is sprayed into the gas to fresh it, and it lives in a tank of its own. Each tank has its own filler. Many of cars share a single flap for the two, while some put the AdBlue filler to your boot or under the bonnet. Topping up your diesel side at the petrol pump goes on all the time. A driver who has to stop and think where it goes usually fills the AdBlue side, from a bottle, and far less frequently. The mistake grows in the gap between them. ## Tooting Graveney: how AdBlue in your diesel tank occurs Rarely is it carelessness: usually three things line up. Hurry follows from the warning. Your car tells you as AdBlue runs low, and an empty tank puts the vehicle into limp mode — so the top-up happens quickly, before work on a drive off Maybury Street, or on the way home in the car park at The Tooting Tavern. Then, your hand goes for the cap it knew on the old vehicle — since a hire car, a new vehicle or a company car puts the fillers where your last one didn't. A spouted bottle finds no obstacle at a diesel filler any more than at an AdBlue one. So the pour, once begun, keeps on. Tooting Bec or the heart of Tooting Graveney: it takes the same few seconds either way. ## Telling the AdBlue filler from the diesel filler Be it a Tooting Graveney forecourt or a driveway out in Merton, spend a few seconds over these before any goes in. - The cap. The AdBlue cap is commonly blue, or marked "AdBlue". Your diesel cap usually isn't. Read it rather than going by position. - Check the size: the smaller neck is, on many cars, the AdBlue one. - The flap. Look inside the fuel flap for a label. Plenty of motors say there which fuel goes where. - The handbook says which it lives when the filler isn't next to your diesel cap: the boot, or under the bonnet. - The person who drove the car last. On a hire or company car collected from somewhere like the car park at Tooting, ask before you leave, not when the light comes on. ## AdBlue top-ups that never reach your diesel tank Wherever across Greater London the light comes on, here is a routine for the day. - Park and switch off. Not on a slope, not with your engine running, and not in a rush on the side of Kenlor Road. - Silly as it sounds, saying "AdBlue" aloud while you unscrew the cap does the trick — once you've located the filler and read it. - The two under a single flap? So make sure the cap on your diesel filler stays shut before raising the bottle. - Gently does it, through the bottle's own spout, till it's full or the bottle is empty. - Only then, start the vehicle: close the cap, check once more, and make sure the diesel cap was never opened. Discover during the second or third stage that AdBlue went in the diesel tank? That is where you stop. Never carry on to stage five. ## Tooting Graveney: already put AdBlue in the diesel tank? Brief order, then. Top of it: the motor remains unstarted. On many diesels the ignition alone runs the fuel pump, so don't switch the car on. Thinning it with more diesel fails, since AdBlue settles to the bottom rather than mixing — and that is where your fuel is drawn from. The staff at Esso, Shell or any forecourt will usually help pushing your car clear if you ask. Leave it where it is if you are on your own drive in Tooting Graveney. Where your motor has run already, stop somewhere safe and switch the vehicle off. Leave the M4 — under 10 miles out of Tooting Graveney — at the next exit. Tell us roughly how far it went: a run towards Westminster, under 10 miles away, is a bigger job than a short hop across Tooting Graveney. ## What takes place when our technicians get there in Tooting Graveney Our technicians come to the vehicle wherever it has stopped, whether that's outside Sellincourt Primary School, near Harry Lauder or on your own drive. Our technicians ask what was put in, roughly how much, and if it has run, since the replies determine the work and our price. The price is given on the call, ahead of any van leaving. The fuel system is then flushed thoroughly, after your tank is cleared. AdBlue crystallises and is corrosive to some of the metals in a fuel system, and so it doesn't wash out on its own — which is why the flush matters more here than with petrol. The filter is cleaned, or replaced where it needs to be; clean diesel goes in; and the car is tested. We do not leave until it has been fired up and is running correctly. Using pumps safe on a busy forecourt and quiet enough to use outside a house at night, most jobs where your motor has not run need roughly half an hour once our engineers are there. Payment is on the day, not upfront, and you are given the documents an insurer asks for: an engineer's report and a VAT invoice. Plenty of insurance policies include misfuelling cover, so it's worth checking yours while we're on the way. ## About Tooting Graveney Tooting Graveney is a suburban area in south London, situated near the River Wandle and close to Tooting Bec and Tooting. Tooting Graveney sits at a low elevation of around 15 metres, with many of its residents living in flats. Tooting Graveney is part of the larger area of Tooting, which also includes Tooting Bec and Colliers Wood, and is located near Westminster. Tooting Graveney has a population of approximately 17443 people. ## AdBlue drains in Tooting Graveney and across Greater London Tooting and Colliers Wood are among the places near Tooting Graveney, a residential suburb, that the same teams cover, throughout SW postcodes. The van reaches you fastest with a postcode starting SW17 0. Moving your car isn't needed. Anywhere it sits — beside Colliers Wood Community Centre, on a lay-by heading to Atkinson Morley Wing Garden, at home — that's where it is emptied. Ring and ask instead of assuming if you're close to a border, or somewhere hard to explain, like the back of Robert Lowe Sports Centre. ## Tooting Graveney people: the short version Always, the cap; after that, the pour. AdBlue in your diesel tank regardless? Leave it switched off then ring 0333 366 0103; Petrol in Diesel empties it on the spot, across Greater London.