--- title: AdBlue in a Diesel Tank Upper Parkstone? Read This canonical: https://www.petrolinadieselcar.co.uk/adblue-in-diesel/upper-parkstone-dorset/ location: Upper Parkstone county: Dorset latitude: 50.728920 longitude: -1.940400 service: AdBlue in a Diesel Tank updated: 2026-10-03 --- # Avoiding AdBlue in a Diesel Tank in Upper Parkstone: Why It Occurs Stop here for a moment if the diesel tank already has AdBlue in it: ignition off, engine off, then phone 0333 366 0103. A drain plus a full flush, carried out right where your car sits in Upper Parkstone, is usually what it needs when found before the engine runs. Not happened yet? Further down, the page covers the why it takes place and the ways to prevent it for good. ## AdBlue in a diesel motor, and its separate tank Diesel goes to the engine — yet plenty of modern diesels seen round Upper Parkstone and Newtown carry another fluid as well. Your exhaust, not the motor, is where AdBlue goes: sprayed into the gas to fresh them, from a separate tank. Each tank comes with one filler of its own. Some motors put the AdBlue filler in your boot or under the bonnet; plenty more have both together behind one flap. Diesel gets filled at every forecourt call-out, week in, week out. Far less frequently, the AdBlue side is filled — normally from a bottle, by someone thinking about where it goes. It is in the gap that the slip happens. ## Upper Parkstone: how AdBlue in your diesel tank takes place It's rarely carelessness. Three things tend to line up. On a driveway off Salisbury Road before work, or in the car park at The Churchill on the way home: that's where the hurried top-up happens. Why the rush? As AdBlue gets low the vehicle warns you, and if it's gone, limp mode follows. New-to-you vehicles come next, as well. Hire cars, new motors and company cars place their fillers in new places, and the hand reaches for the cap it used on the old one. And the bottle fits. A bottle with a spout goes into a diesel filler as easily as an AdBlue one, so nothing stops the tip once it has started. The same few seconds decide it, in the middle of Upper Parkstone or out in Parkstone. ## Telling the AdBlue filler from the diesel filler Check these first, on a forecourt in Upper Parkstone or a drive over in Branksome. Seconds, no more. - Position can mislead; the cap does not. AdBlue ones tend to be blue or bear the name "AdBlue" — diesel ones normally don't. - Look at the size: the smaller neck is, on many vehicles, the AdBlue one. - A label inside your fuel flap often shows which fuel goes where, on many vehicles. Check for it. - Cannot see it next to your diesel filler? Then check beneath the bonnet or in your boot — the owner's manual says which. - Picking up a hire or company car, say at the car park at Parkstone (Dorset)? Ask the person who drove it last before you set off, not when the light comes on. ## How to top up without AdBlue in the diesel tank A routine for the day the light comes on, wherever around Dorset that is. - Switch off once parked — level ground, engine off, and not in a rush beside Ashley Road at the roadside. - Silly as it sounds, speaking "AdBlue" aloud while you unscrew the cap works — after you have found the filler and read it. - Leave the diesel cap on. If both sit under one flap, check your diesel cap is still closed before you lift the bottle. - Using the bottle's own spout, tip slowly — and stop when it's full or the bottle is empty. - Before you start your car, close the cap and check a second time that the diesel cap never came off. Stop there if you find, at step two or three, that you've already poured into your diesel side. Do not go on to step five. ## Put AdBlue in your diesel tank in Upper Parkstone already? The short order of things, starting with no starting the engine. On many diesels the ignition alone runs the fuel pump, and so don't switch the car on. AdBlue doesn't mix with diesel — it sinks to the bottom of the tank, where your fuel is drawn from — so do not top up with diesel to dilute it. The attendants at Esso, Shell or another forecourt will usually lend a hand pushing the car clear if asked. Leave it where it is if you are on your own driveway in Upper Parkstone. Stop as soon as it is safe then switch off, if the motor has already run. Upper Parkstone sits under 25 miles from the M27; there, take the next junction. A short hop across Upper Parkstone is a smaller job than a run towards Salisbury, under 25 miles away, and so tell us roughly how far it went. ## Upper Parkstone: what takes place when we get there Our van comes to the car anywhere it stopped — your own driveway, near St John's Parish Church, or outside Courthill Infant School. Which liquid went in, the quantity, and if it ran: our technicians ask since those answers set both work and price. No one heads out until you've heard the quote by phone. The system is then cleaned thoroughly, once your tank is emptied. With AdBlue that matters more than with petrol: it crystallises and is corrosive to some of the metals in a fuel system, so it does not wash out on its own. Testing is last: before that, clean diesel is added, and the fuel filter is cleaned or replaced as needed. After that our engineers fire it up and check it runs properly before we leave. Unrun cars usually need a half-hour job after arrival. The equipment is fine on a busy forecourt, and quiet enough for a residential street late at night. Your insurer will ask for an engineer's report and your VAT invoice, and you get both once this job is done. Payment is on the day, with no deposit. Before we get there, have a look at your insurance documents; many carry cover for misfuelling. ## About Upper Parkstone, briefly Upper Parkstone is a suburban area located on the south coast of England, in the county of Dorset, with a mix of residential and recreational spaces. Upper Parkstone sits at an elevation of 63 metres, overlooking Poole Harbour and the surrounding coastline. Upper Parkstone is characterised by its predominantly detached housing stock, with nearby areas including Parkstone, Foxholes, and Rossmore. ## Upper Parkstone and Dorset: AdBlue drains across the area Being a residential suburb, Upper Parkstone shares its vans surrounding places — Foxholes, Rossmore — all the way across BH postcodes and the surrounding area around them. Give a postcode beginning BH14 0, and the van arrives fastest. The car stays where it is. Draining happens right there, whether a driveway, a street by Gospel Hall, or a layby towards Uppleby Road Play Area. Tricky to pin down, like the back of Buckland Road Baptist Church? Close to a border? Asking is better than assuming, so ring. ## The short version for Upper Parkstone motorists Before you tip, read the cap. If AdBlue has gone in the diesel tank anyway, leave it off then phone 0333 366 0103. Petrol in Diesel drains it where it sits, anywhere in Dorset.