--- title: AdBlue in a Diesel Tank St Anns Chapel: Explained canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/st-anns-chapel-cornwall/ location: St Anns Chapel county: Cornwall latitude: 50.516200 longitude: -4.235030 service: AdBlue in a Diesel Tank updated: 2026-10-27 --- # St Anns Chapel: How Does AdBlue End Up in a Diesel Tank, and How Do You Avoid It? Keep your motor and ignition off then call 0333 366 0103 first — reading can wait when AdBlue is already in your diesel tank. A drain and a thorough flush, carried out right where the car sits around St Anns Chapel, is usually all it needs if caught before your engine runs. Here before the event? In that case the rest explains how it comes about and how to prevent it ever happening. ## Why does AdBlue in a diesel motor need its own filler? Not one liquid but two: that is what many newer diesels around St Anns Chapel and Higher Dimson run, with diesel feeding the motor. The exhaust, not the engine, is where AdBlue ends up: dosed into the fumes to clean it, from its own tank. Each tank has its own filler. Some cars keep the AdBlue filler in the boot or under the bonnet; plenty of others place the two together under one flap. At the pump, the diesel side gets filled all the time. The AdBlue side is topped up far less commonly, usually from a bottle, and normally by somebody who has to stop and think where it goes. That gap is where the error lives. ## AdBlue in the diesel tank around St Anns Chapel: how it occurs It is hardly ever carelessness. Three things tend to line up. To start with, the warning. Low AdBlue triggers a message from the vehicle, and letting it run out means limp mode — so a hurried top-up, perhaps before work off Chapel Close, perhaps at The Rifle Volunteer on the way home that evening. Then the vehicle is unfamiliar. A hire car, a new motor or a company car puts the fillers where your last one didn't, and your hand gets to for the cap it would have used on the old one. A spouted bottle finds no resistance at a diesel filler no more than at an AdBlue one. And so the tip, after started, carries on. Drakewalls or the heart of St Anns Chapel: it is the same few seconds in both. ## How to tell the AdBlue filler from the diesel one Whether a St Anns Chapel forecourt or a drive over in Norris Green, take a few seconds on these before anything goes in. - Colour and marking: an AdBlue cap is regularly blue, or says "AdBlue", where a diesel cap normally doesn't. Trust the cap, not where it sits. - Look at the size: the smaller neck is, on plenty of vehicles, the AdBlue one. - Open the filler flap and check for a label — many vehicles mark what goes in which inlet right there. - In the boot or under the bonnet: that's where your filler sits if it's not by your diesel cap, and the handbook tells you which. - Ask the person who drove it last — before you leave, not when the light comes on — if you collect a hire or company car from somewhere like the car park at Gunnislake. ## AdBlue top-ups that never reach the diesel tank A routine for the day the light comes on, wherever in Cornwall that is. - Switch off once parked — flat ground, engine stopped, and never in a rush beside Turnpike at the roadside. - Say "AdBlue" out loud as you unscrew the cap, once finding the AdBlue filler and reading it. Daft, perhaps, but it does the trick. - Leave your diesel cap on. If both sit under one flap, check the diesel cap is still closed before you lift the bottle. - Stop when the tank fills or the bottle runs dry; before that, pour gently using the built-in spout. - Only after that, start the vehicle: close the cap, check again, and make sure the diesel cap was never opened. Find at stage two or three that it's already gone into the diesel side? So stop just there. Skip step five entirely. ## AdBlue in the diesel tank already, in St Anns Chapel? Don't start the motor: that is where the short order of things starts. On many diesels the ignition alone runs the fuel pump, so don't switch the vehicle on. Thinning it with extra diesel fails, since AdBlue sinks to the bottom rather than mixing — and that is where your fuel is pulled from. If you're at a forecourt, whether it's the Asda or the Gulf, ask the attendants to help roll the car away from the pump. Leave it where it is if you are on your own drive in St Anns Chapel. Already started? Pull over once it is sensible, then turn off. The next exit is the place to leave if you are on the M5, under 50 miles from St Anns Chapel. Tell us roughly how far it went: a run towards Plymouth, under 15 miles away, is a bigger job than a short hop across St Anns Chapel. ## Our arrival in St Anns Chapel, and what takes place next Our van comes to your car anywhere it has come to rest — your own driveway, near Round Barrow, or outside Copper Valley Infant and Nursery Academy. Both the work and the quote depend on three replies — which liquid, what quantity, and if it's run — so our technicians ask. The quote is given over the phone, ahead of any van leaving. Draining the tank comes next, then a thorough flush of the system. 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 that matters more here than with petrol. The filter is flushed, or replaced where it needs to be; clean diesel goes in; and the car is tested. The engine is started next and checked to make sure it runs correctly, all before we leave. With pumps fine on a working forecourt and quiet enough for use outside a house at night, most jobs in which your motor hasn't run need about half an hour once we arrive. No money in advance; you settle up that day. Afterwards, the VAT invoice and the report from the engineer are handed to you for your insurer. Before we get there, have a look at your policy; plenty include cover for misfuelling. ## About St Anns Chapel and where it is St Anns Chapel is a small village in Cornwall, situated inland at an elevation of 197 metres, and is located near the villages of Drakewalls, Albaston, and Dimson. St Anns Chapel has a population of around 645 people, and its housing stock is predominantly semi-detached. St Anns Chapel is close to the city of Plymouth, which is approximately 10.9 miles away, and is about 191.2 miles from London. St Anns Chapel sits in a rural area of Cornwall, with rolling hills and countryside surrounding the village. ## AdBlue drains about St Anns Chapel, and Cornwall beyond St Anns Chapel is a rural village, and our teams that cover it also work the places around it, Albaston and Dimson among them, across the PL postcode area. A postcode starting PL18 9 gets our van to you fastest. The car doesn't need to move. Draining happens on the spot, be it a driveway, a road by The Tamar Valley Donkey Park, or a lay-by towards Sylvia's Meadow. If you're near a boundary, or somewhere hard to explain like the back of Hingston Down Historic Mine & Nature Reserve, ring and ask instead of guessing. ## St Anns Chapel drivers: the short version First, the cap; then, the tip. If AdBlue has gone in your diesel tank anyway, leave the car off then phone 0333 366 0103. Petrol in Diesel clears it where it stands, anywhere in Cornwall.