Skip to content

Petrol in Diesel

0333 366 0103

AdBlue in a Diesel Tank in Guildford? Don't Start It

AdBlue in the diesel tank? Then keep your engine off — and the ignition as well. Water with urea mixed in it: that is AdBlue. The harm begins once it's pulled through your pump — it will not ignite, and it will not combine with diesel. A drain and a thorough flush, done where your car is in Guildford, is generally all AdBlue in a diesel tank takes — if it's caught before the motor has been run. Nothing comes before calling 0333 366 0103.

Call 0333 366 0103

Guildford, AdBlue in the diesel tank: what to do at once

Things to do:

  • Keys out — that way no one can power anything on.
  • If you're anywhere close to moving traffic, put the hazards on.
  • So you can give us which fluid it was and roughly what quantity, keep the till receipt or the empty bottle.
  • Give us a postcode starting SA62 4, or whichever street lies closest, and the van finds you straight — so ring wherever you stand.

Don't:

  • Moving your vehicle just a short way is no reason to start the engine.
  • Your ignition remains off: on many diesels, switching it on is enough to start your fuel pump.
  • Do not top up with diesel to dilute it. AdBlue does not mix in diesel; it separates out.
  • Even a short stretch up Orchard Row is too far to drive it.
  • Emptying your tank yourself beside the road is not worth trying.

The staff on duty at any Guildford filling station — the Texaco included — will normally help rolling it clear if you ask. On your own drive, don't move it at all.

What does AdBlue do in a diesel tank?

AdBlue is made for your exhaust, not the engine. Its own tank keeps it, and from there it is sprayed into the exhaust, and there it treats the gas. Nothing inside a fuel pump is designed for this liquid — and no part of it was meant to go through one.

It does not blend. After it's poured into the tank, AdBlue behaves nothing like fuel. The intake sucks fuel from the deepest part of the tank, and that's exactly where AdBlue settles: as it is denser than diesel, it sinks. When the system runs, the AdBlue is top of the list to be pulled through. Until then it waits underneath your diesel, which is why a car topped up in Guilford last night and not switched on remains the straightforward case, as long as nobody turns the key.

It causes two kinds of damage from there. It eats at some metals found in fuel components, working on any part it reaches till it's cleared completely. And once the water goes, the urea turns into crystals that clog filters and lodge in tiny channels. By daybreak, a car sitting in Guildford with AdBlue in its lines gets worse; if it's just in your tank, it doesn't. Water lubricates nothing. The high-pressure pump and every injector need diesel flowing past them, so the water content damages them by itself.

Draining AdBlue from a diesel tank in Guildford

Petrol or AdBlue in a diesel: why AdBlue is regularly worse

A problem of thinned fuel is what you get after fuelling a diesel with petrol at the Asda. It mixes with your diesel, and while it's in your tank it causes no harm; the damage comes from running your motor on it.

AdBlue in a diesel is another problem: not thin fuel, yet no fuel at all. Since it does not burn, running it through isn't an option. Whether your car is in Hill Mountain or the centre of Guildford, firing it up "to see" costs more with AdBlue than nearly any other slip, and the flush counts for more. The reasons: it will not stay blended, so diluting it fails; and deposits and corrosion outlast the following fill.

With AdBlue, the good news is no distinct from petrol. If your engine has not run, the AdBlue is still inside your tank, and the tank is the quickest part of a fuel system to clear, wherever in Pembrokeshire your car is sitting.

Guildford: how AdBlue ends up in a diesel tank

Nobody means to do it. The AdBlue filler on plenty of cars sits right next to the diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. Mostly it's never the filling station: a driver picks up a bottle heading home and tips it in outside the house.

It tends to happen in a few familiar ways. A warning light comes on during the school run, and the top-up occurs in a hurry outside the local primary school. Someone tips the container in outside their house, right off Esther's Lane, as the day ends. One more pattern: dim light, the car park by The Cottage Inn, and a driver opening that flap the first time.

It crops up the most in a hire car, a new vehicle, a company car, or the spare motor in a family with one of each fuels — the cars drivers know the least. Wherever across Pembrokeshire, Guildford included, the slip doesn't change, and nor does the first response: leave it off.

Already started the engine with AdBlue in the diesel tank around Guildford?

The AdBlue has left your tank, then. Given any running, it travels to the high-pressure pump and every injector, having passed via the filter and lines.

Watch for rough running, exhaust smoke, lost power, lights on the dash, or a stall — returning from Sams Wood, say, or midway across Guildford. When safe, stop then turn everything off — without turning it on again to test. Each start pulls more of it through.

Guildford sits under 50 miles from the M4; if you were on it, leave by the next junction and stop safely instead of carrying on.

How far it went matters. A few hundred yards across Guildford to the car park by Adeilad Clwb Rygbi Llangwm is a very different job from a run towards St Davids, under 25 miles away, with the AdBlue reaching further into the fuel system with each mile. Let us know roughly how far it had come.

Wherever the vehicle came to a stop is where all of it gets done, even with more to flush once your engine has been running. Spotted quickly, it very seldom leaves permanent damage.

Draining AdBlue in a diesel in Guildford: what it takes

Our engineers come to your car, wherever it has stopped in Guildford: a side street close to The Hanging Stone, a drive, a lay-by or a forecourt. Which fluid got in, about the quantity, and whether the engine has been run: our engineers ask before all else, since those shape the work.

Next, draining the tank on the spot takes out the polluted diesel and the AdBlue together. What remains from AdBlue will not wash away unaided, so the fuel system gets a full flush, which matters much more with urea than for petrol. Testing your car follows at the end, after fresh diesel goes in and the filter is flushed or, where necessary, swapped. If the motor hasn't run, most jobs take about half an hour once our technicians are there. Explosion-proof pumps make a busy forecourt safe to work on, and they run quiet enough to spare the neighbours at night.

The final step is to bleed the system on fresh diesel. Whether it is a parking space outside Pembroke Dock or a drive around Guildford, that is where our engineers fire it up and you head off. Our technicians confirm it runs smoothly on clean diesel before we leave. No garage is needed at any point, with the entire job done then and there. Afterwards, there is the paperwork for your insurer: a VAT invoice and a written report from the engineer.

About Guildford and where it is

Guildford is a small suburban area in Pembrokeshire, situated on the Welsh coast at an elevation of 23 metres. Guildford lies near several nearby villages, including Llangwm and Port Lion, and is within a short distance of the historic city of St Davids. Guildford is characterised by its predominantly detached housing stock, reflecting its suburban nature. Guildford is also relatively distant from major urban centres, with London over 200 miles to the east.

AdBlue drains around Guildford and across Pembrokeshire

Our teams that answer AdBlue jobs around Guildford also cover the places round it, Llangwm, Black Tar and Port Lion among them, and most of Pembrokeshire beyond, across the SA postcode area. Ring and check rather than guess if you're by a border, or somewhere tricky to pin down.

No towing is needed. In Guildford, a residential suburb, a mobile service works: your car is emptied where it stands, whether on a drive, a side street, a car park or a filling station.

What does AdBlue in a diesel tank cost to sort out in Guildford?

There's no fair single price, because the jobs are not the same. What moves the price is, first, whether the motor has run and for how long; then how much AdBlue was put in; and finally where your car is and whether a van can reach it safely, which is simpler on an open drive than in a tight space behind Benton Castle.

That's why every call from Guildford starts with the same three queries, asked before giving a figure, not after: what got in, how much, and whether it has run. Those replies turn a range into a straight quote.

You hear that quote by phone, before anyone heads out, and you pay on the day, by card or by phone, with nothing upfront. While the van is on the way, dig out your insurance: many include misfuelling.

In Guildford and still beside the car?

Right now, the best thing to do with your car is to leave it. Ignition off, motor off, keys out. Tell us it's AdBlue, roughly what quantity, and whether it ran, on 0333 366 0103. After that Petrol in Diesel handles it, in Guildford or wherever in Pembrokeshire.

Call 0333 366 0103