--- title: Cotmaton: AdBlue in a Diesel Tank, What Next canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/cotmaton-devon/ location: Cotmaton county: Devon latitude: 50.679140 longitude: -3.248830 service: AdBlue in a Diesel Tank updated: 2026-10-12 --- # What Now? AdBlue in the Diesel Tank in Cotmaton One fact matters above all once AdBlue is in a diesel tank, and it is whether your motor has been started afterwards. If it hasn't, keep it that way, whether the car is in Cotmaton itself or out in New Town. Leave your engine and the ignition off then call 0333 366 0103; it is usually a drain and a thorough flush, done where the vehicle is around Cotmaton. Pull over the moment it is safe and turn off, if it has already run. It's a larger job, yet stage one does not change. Anywhere around Devon it took place, one of the situations below matches yours. ## Cotmaton forecourt: AdBlue in a diesel at the pump The cap you opened was the wrong one — and you only spot it while you are standing at the pump, bottle or nozzle in your hand. Whether the nearest petrol station, East Budleigh Garage or somewhere else around Cotmaton, the situation is identical. Meaning? Finding out on the forecourt is the best it gets. Only your tank holds AdBlue; no component past it has drawn it in. Freeing the petrol pump is no reason to run it — and so don't get back in. Have the staff to lend a hand pushing it to a space, save the bottle, then phone us from there. Emptying it there at the petrol pump is possible if it can't be moved, because the equipment is explosion-proof. ## Cotmaton, at home: AdBlue in the diesel tank For days the dashboard had been nagging you. Only at the recycling bin, the empty container in your hand, did you glance back at the cap you'd used on the driveway. Driveways near Cotmaton Road get it as much as anywhere. Meaning? As long as your car has not moved since, it is second to the forecourt case. Being unable to mix, AdBlue drops to the base in that tank and waits. One night standing changes none of that. What to do: leave the keys inside the house so nobody moves your car in the morning. Then call. We drain the car on your drive, whether that's around Cotmaton or out in Western Town. The pumps are quiet enough to use outside a house after dark. ## On the road in Cotmaton with AdBlue in a diesel Filled up, drove away, and before long your motor was turning roughly, blowing smoke, losing power, or flashing up the dash. Witheby, perhaps, or the route towards Exeter — a run of under 15 miles. The upshot: the system has pulled AdBlue in by now. It has been through the filter and the lines and, the further you went, into your high-pressure pump and the injectors. Each mile and each restart takes it further. Do this: pull up somewhere safe, then switch your engine off. On the M5, under 10 miles from Cotmaton, that means the next exit, not the services further on. Restarting it to check gets nothing — AdBlue doesn't clear itself. Phone, and say what distance your car was driven. ## AdBlue in the wrong tank of a hire, lease or company car It's a car you have had for a week. Your own car either does without AdBlue or puts it elsewhere, so nothing told you the AdBlue inlet sits just beside the diesel. Anywhere you happen to be around Devon, every motorist can slip up. Put simply: one extra step on top of the situations above, which turn on if it's run. The owner frequently needs to sign off any work, under many hire and fleet contracts. Settling it before the van arrives is quicker, and so ring the hire company or your fleet manager, then us. Hanging on for a reply at the car park at Feniton, or near Glenside? Keep the engine off meanwhile. ## AdBlue in your diesel tank? Not sure, around Cotmaton Honestly, the best answer might be that you think it did. Which cap was taken off, you can't say; meanwhile the bottle weighs lighter than it ought to, and a whiff of ammonia hangs by the filler. Maybe on a friend's driveway in Land Part, or in a rush outside Sidmouth Church of England (VA) Primary School at the school run. What it means: a little spilled about the filler does no damage to your engine. A diesel tank with AdBlue inside is another story. You cannot tell which by turning the ignition, and doing so would pull in any AdBlue that is in the tank. What to do: treat it as if it was put in. Don't start it. Inspecting a tank that turns out free of AdBlue beats draining one once it has been run — so ring then tell us what you saw. ## What every AdBlue drain in Cotmaton has in common The job opens the same way, whichever the case. Three questions come when our technicians arrive — at a forecourt, a driveway, a street by Jacobs Ladder or the car park at The Anchor Inn: the liquid, the amount, and if it has run. Those answers settle this work, and you get the quote by phone, before anybody sets off. Draining that tank comes next, followed by a careful flush — more important after urea than with petrol, because crystals and corrosion will not clear by themselves, however long you wait. Finally are your filter, flushed or renewed if necessary; clean diesel; and a check of your car. If the motor has not run, most jobs take about half an hour once we're there. Firing it up comes last. Our engineers check it runs smoothly on new diesel before we leave. If it is caught soon, the vehicle very rarely has lasting damage, and the entire job takes place where it is. You pay on the day, with nothing upfront, and get a VAT invoice and an engineer report for your insurer. Worth remembering: lots of insurers offer misfuelling cover, and so a quick look at your documents while we travel is worthwhile. ## About Cotmaton and where it is Cotmaton is a suburban area located on the coast of Devon, with an elevation of 38 metres above sea level. Cotmaton sits near the cities of Exeter and the towns of Sidmouth, Western Town, and Eastern Town, and is characterized by its predominantly detached housing. Cotmaton is a relatively small community, with a population of approximately 1566 residents. Cotmaton is situated in a scenic coastal area, with the city of Exeter being the nearest major urban centre, approximately 12.8 miles away. ## AdBlue drains across Devon, Cotmaton included Cotmaton is a residential suburb, and the same teams that cover it work the towns near it too, Sidmouth and Eastern Town among them, across the EX postcode area. Your whereabouts is clearest from a postcode beginning EX10 8. Whether the vehicle is on a lay-by on the way to Connaught Gardens or in a car park in the middle of Cotmaton, it does not need to shift. Our van drains it where it stands. If you're somewhere hard to describe, near Manor Pavilion Theatre or close to a boundary, ring and ask instead of assuming. ## Your scenario, in one line Still unrun? Leave the car off then phone. Whichever line applies, Petrol in Diesel handles the rest on 0333 366 0103, across Devon and within Cotmaton — once you pull over, turn off and phone, if it's run.