Skip to content

Petrol in Diesel

0333 366 0103

AdBlue in the Diesel Tank in Tring? Keep It Switched Off

AdBlue in the diesel tank? Then keep your engine off — and your ignition as well. Urea dissolved in water is what AdBlue is. It does not burn, it does not mix with diesel, and the harm it does begins when your fuel system draws it in. In Tring, AdBlue in a diesel tank caught before your motor runs normally comes down to a drain and a thorough flush, right where your car is. Nothing comes before ringing 0333 366 0103.

Call 0333 366 0103

AdBlue in your diesel tank around Tring: the first few minutes

To do:

  • So nobody can turn the ignition on, take your keys away.
  • Hazards on, if moving traffic is at all near.
  • Hold on to the till receipt or the empty bottle, and so you can tell us what got in and roughly how much.
  • Give us a postcode starting HP23 4, or whatever street lies nearest, and our van finds you directly — so ring wherever you are.

Do not do these:

  • Do not start your motor, even for a moment to move the car.
  • Don't switch your ignition on. On plenty of diesels that alone runs the fuel pump.
  • Don't top up with diesel to thin it. AdBlue doesn't mix in diesel; it separates out.
  • Leave it where it is rather than driving it anywhere, even a short stretch down High Street.
  • No emptying it yourself, at all, at the verge.

The attendants working at any Tring forecourt — the Shell among them — will usually lend a hand rolling it clear if you ask. Stopped on your own driveway? Then it stays just as it is.

What AdBlue does in a diesel tank

Meant for your exhaust, AdBlue has no business in the motor. Its own tank keeps it, and from there it's sprayed into your exhaust, where it cleans the fumes. Neither side fits the other: urea does not belong in a pump, and an injection pump can't take urea.

It does not combine. Once it's poured into a tank of diesel, AdBlue acts nothing like fuel. The intake takes fuel from the lowest part of that tank, and that is just where AdBlue settles: as it is denser than diesel, it sinks. When your system runs, the AdBlue is top of the list to be pulled through. Before then it waits beneath the diesel, which is why a car filled in New Mill yesterday and not switched on stays the simple one, as long as nobody turns your key.

From there it causes two kinds of harm. It attacks some metals found in fuel systems, working on any part it reaches till it is cleared from the system. And when the water evaporates, the urea forms crystals that block filters and lodge in narrow passages. If the AdBlue is in the lines, waiting overnight around Tring leaves things worse. In the tank alone, waiting costs nothing. Water protects nothing. The high-pressure pump and each injector depend on diesel running through them, and so the water part damages them in its own right.

Draining AdBlue from a diesel tank in Tring

AdBlue in a diesel: why it's commonly worse than petrol

Top up a diesel with petrol in error at the Texaco, and this problem is diluted fuel. No harm is done while it stays put, mixed into your diesel — only when your engine works on it.

The issue with AdBlue in a diesel is a completely unsuitable substance. It doesn't burn, and so it can't simply be run through. It doesn't stay mixed, so it can't be diluted. And crystals and corrosion don't wash out with the next tank of fuel. That's why the flush matters more with AdBlue than with petrol, and why starting your engine "to see" costs more here than nearly anywhere else, whether the car is in Little Tring or the middle of Tring.

The same good news holds as with petrol. Not run? Then the AdBlue sits just in that tank, the easiest bit of the entire system to clear, wherever your vehicle has stopped across Hertfordshire.

AdBlue in a diesel tank in Tring: how it ends up there

In dim light, two caps side by side — the AdBlue one and the diesel cap, occasionally behind a single flap — can look the same. No one means it; many layouts invite it. It mostly happens at home, from a container bought on the journey home, not at the filling station.

It tends to happen in a couple of familiar ways. Rushing, outside Bishop Wood Church of England Junior School, Tring, after a warning lamp came on during the school run, a parent refills the vehicle. After work, a container is tipped in on a drive near Frogmore Street. Or the vehicle is topped up in the car park at The Akeman, in poor light, by someone who has never opened that flap before.

It comes up most in a hire car, a new motor, a company vehicle, or the other vehicle of a family with one of each fuels — the vehicles people use least. Wherever you are around Tring or the remainder of Hertfordshire, it is the same error and the same first answer: leave the vehicle off.

AdBlue in your diesel tank around Tring, and the motor started?

The AdBlue has left the tank, then. Given any running, it goes on to the high-pressure pump and each injector, having passed through the filter and pipework.

Rough running, smoke, lost power, dashboard lights or stalling: any may show up, maybe midway across Tring or coming back from Tring Memorial Gardens. No starting it again to test: pull over once safe, then switch everything off. With each start, more of it is pulled through.

Exit the M1, under 15 miles from Tring, at the next junction and park safely, not driving on.

Mileage counts: each mile carries the AdBlue deeper in, and so driving for St Albans, under 15 miles away, gives a much larger job than hopping across Tring to the car park by Victoria Hall. Tell us about how far it had come.

Once your engine has been started, the flush covers more, and all of it is done where your car has come to a stop. When it's noticed soon, long-term damage is very uncommon.

Clearing AdBlue in a diesel in Tring: what it takes

Wherever it has come to rest around Tring — a forecourt, a layby, a drive, a road by Akeman Street Baptist Church — our van travels to your car. Three replies shape the work, so before anything else our technicians ask which fluid got in, about the amount, plus if the motor has turned over.

Next, draining that tank right there takes out the polluted diesel along with the AdBlue together. What remains from AdBlue will not flush out by itself, and so the fuel system gets a full flush, which counts much more with urea than with petrol. Testing your vehicle comes at the end, after fresh diesel is added and the fuel filter is flushed or, if needed, swapped. If the engine has not run, the majority of jobs take about half an hour once our engineers arrive. The pumps are explosion-proof, fine on a working forecourt and quiet enough to use outside a house at night.

Bleeding the system with new diesel comes last. Starting it comes next, and then you set off from where the car is parked, outside the nearest station or on a drive around Tring. The test before our technicians head off is that it runs properly on fresh diesel. Since the job is done in its entirety where the vehicle is, a workshop never comes into it. At the end, there is the paperwork for the insurer: a VAT invoice and a written report from the engineer.

About Tring

Tring is a town in Hertfordshire, situated in the inland area of the Chiltern Hills at an elevation of 137 metres. Tring lies approximately 30 miles northwest of London and 14 miles west of St Albans, with nearby places including Tring Wharf, Upper Dunsley, and West Leith. Tring has a population of around 11,789 people and predominantly consists of semi-detached housing. Tring is characterized by its rural setting and commuter links to nearby cities.

Tring and Hertfordshire: AdBlue drains across the area

Our vans that answer AdBlue calls around Tring also cover the places round it, Tring Wharf, Upper Dunsley and West Leith among them, and most of Hertfordshire beyond, across the HP postcode area. Close to a boundary, or anywhere tricky to pin down? Asking beats guessing, so ring.

Anywhere your vehicle stands — your drive at home, a side street, a car park, a forecourt — our technicians drain it on the spot, and there's no need to bring it to us; which suits Tring, a town, well.

AdBlue in a diesel tank in Tring: the cost of fixing it

Because the jobs vary, a single figure would not be fair. What changes the price is, firstly, whether your engine has run and for how long; then how much AdBlue was put in; and finally where the vehicle is and whether our van can get to it safely, which is simpler on an open driveway than in a tight gap behind Tring Library.

Ahead of any quote, never afterwards, each call from Tring opens with the same three checks: the liquid, the amount, and if the engine ran. Those answers narrow a range right down to one figure.

Quoted by phone before the engineer heads out, it is paid for on the day — card or phone, no deposit. Check your policy while we are on the way: plenty include misfuelling cover.

Still beside the vehicle around Tring?

Then the most helpful thing you can do is nothing to your car. Keys out; motor and ignition off. Ring 0333 366 0103: AdBlue, the amount, and if the engine ran is everything our engineers ask. Petrol in Diesel handles the rest across Hertfordshire, Tring too.

Call 0333 366 0103