Skip to content

Petrol in Diesel

0333 366 0103

AdBlue in a Diesel Tank in Nash Mills? Don't Start It

Motor off, ignition off: that's where you begin if AdBlue has got into the diesel tank. AdBlue is urea mixed in water. Being water-based, it won't ignite and never combines with diesel; damage just comes once the pump starts pulling it. A drain and a thorough flush, done where the car is in Nash Mills, is generally what AdBlue in a diesel tank needs — if it's caught before your engine has run. Before you do anything else, phone 0333 366 0103.

Call 0333 366 0103

Nash Mills, AdBlue in your diesel tank: what to do right away

To do:

  • Pull your keys out, so no one switches the ignition on.
  • Put the hazard lights on if you're anywhere close to moving traffic.
  • Keep the receipt or the empty bottle, and so you can tell us what went in and about how much.
  • Ring us from where you are. A postcode starting HP3 8, or the name of the nearest street, brings the van to you without a search.

Things not to do:

  • No starting the engine — not briefly, not to reposition the car.
  • Your ignition remains off: on many diesels, switching it on is enough to run your pump.
  • Don't top up with diesel to thin it. AdBlue does not dilute in diesel; it separates out.
  • Any driving at all is best avoided, including a short way along Lower Road.
  • No draining it yourself, either, at the roadside.

Rolling the vehicle off the pumps is a job for attendants to help with, wherever Nash Mills forecourt you're on, the Texaco or any other. On your own drive, don't move it at all.

AdBlue in a diesel tank: what it does

The engine is not what AdBlue is made for; your exhaust is. From a dedicated reservoir it is fed directly to your exhaust, cleaning what the engine lets out. A fuel pump is not designed to take it, and AdBlue was never intended to go through one.

Inside a diesel tank it acts really differently from fuel. It does not mix in. It sinks, since it's denser than diesel, and settles down where the pickup takes its fuel from. The first thing the fuel system pulls through, after it runs, is the AdBlue. So a car that had AdBlue poured in on a drive in Kings Langley last night, and has not been started since, is still the simple case: the AdBlue is lying at the bottom of your tank, and nothing has sucked it in.

Once it is drawn in, the damage takes two forms. What remains when the water goes is urea, which forms crystals: they lodge in tiny passages and clog filters. On top of that, it eats at some metals in the fuel system, and carries on till it is flushed out. Overnight, a car sitting in Nash Mills with AdBlue in its lines gets worse; if it's just inside the tank, nothing changes. Water lubricates nothing. The high-pressure pump and each injector depend on diesel running through them, so the water part harms them by itself.

Draining AdBlue from a diesel tank in Nash Mills

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

A problem of thin fuel is what you get from fuelling a diesel with petrol at the Sainsbury's. No harm comes as long as it sits unused, mixed into your diesel — only when your motor runs on it.

The issue with AdBlue in a diesel is a totally wrong liquid. It does not burn, and so it cannot just be run through. It does not stay mixed, so it cannot be thinned. And crystals and corrosion don't wash out with the next tank of fuel. That is why the flush counts more with AdBlue than with petrol, and why starting the engine "to see" costs more here than almost anywhere else, whether your car is in Frogmore End or the middle of Nash Mills.

With AdBlue, the good news is no different from petrol. Clearing a tank is the simplest part on any fuel system, and without running, the AdBlue remains in there — wherever in Hertfordshire your car sits.

How does AdBlue end up in a diesel tank in Nash Mills?

In dim light, two caps side by side — the AdBlue one and the diesel one, now and then under a single flap — may look the same. Nobody intends it; many layouts invite it. It usually takes place outside the house, from a container bought on the journey home, not at the forecourt.

It tends to happen in a few familiar ways. The refill is hurried outside Nash Mills Church of England Primary School, because your dash flashed with a warning while the children were dropped off. A driver tips the container in outside their house, right off Rose Lane, as the day ends. Otherwise, after dark by Ye Olde Red Lion, the car gets topped up by a driver opening that flap the first time.

The least known cars see it most — hire cars, new cars, fleet cars, and the other vehicle in a family with one of each fuel types. Wherever you're in Nash Mills or the remainder of Hertfordshire, it is the same mistake and the same first answer: leave it off.

Started the engine with AdBlue in the diesel tank around Nash Mills?

Then the AdBlue has left the tank. The fuel filter and pipework have had it sucked through, and any running carries it on to the high-pressure pump and every injector.

Lumpy running, smoke, dropping power, dashboard warnings or cutting out: any might show up, perhaps midway across Nash Mills or coming back from War Memorial Gardens. Stop when it is safe. Switch off. Keep it off instead of restarting it to check. More of it is pulled through with each start.

If you were on the M25, under 3 miles from Nash Mills, come off at the next exit and stop somewhere sensible rather than pressing on.

A quick hop across Nash Mills to the car park by John Dickenson & Co War Memorial is one thing; heading towards St Albans, under 10 miles away, is something else, because each mile carries the AdBlue deeper in. So mileage counts. Tell us about how far it had come.

Our engineers do all of the rinsing where the car has stopped, and once the motor has run there is more of it. Lasting damage is very unusual when it's spotted soon.

What does an AdBlue drain on a diesel involve around Nash Mills?

The vehicle remains where it is, whether that is a road near Nash Mills Village Hall, a drive, a layby or a forecourt in Nash Mills, and the van comes to it. Before anything else we ask what was put in, about how much, and whether the engine has been run, since those answers decide the work.

Right there, the tank is then emptied, and all of the polluted diesel and the urea come out as one. What remains from AdBlue will not flush away unaided, so the fuel system gets a full flush, which counts much more with urea than with petrol. Clean diesel goes in once your filter is cleaned — or replaced, if it needs to be — and after that the vehicle is tested. Roughly half an hour on site is usual for most jobs where your motor has not run. Explosion-proof pumps mean a busy forecourt safe to work on, and they're quiet enough to spare the street at night.

Last, the system is bled with new diesel. Firing it up comes next, and then you drive off from where the vehicle is parked, at Apsley or on a driveway in Nash Mills. Our technicians check it runs smoothly on clean diesel before we leave. No workshop is needed at any point, with the entire job done then and there. Your insurer is likely to want an engineer's report and your VAT invoice — both yours once the job is done.

About Nash Mills

Nash Mills is a suburban area located on the riverside in Hertfordshire, with a relatively low elevation of 78 metres. Nash Mills sits near the city of St Albans, approximately 5 miles away, and is also close to other nearby places such as Rucklers Lane and Apsley. Nash Mills has a population of around 2973 people, predominantly residing in flat-type housing. Nash Mills is situated about 20.6 miles from London, making it a commuter-friendly location.

Nash Mills and Hertfordshire: AdBlue drains across the area

Throughout the HP postcode area, the teams answering AdBlue call-outs around Nash Mills reach most of Hertfordshire too, Rucklers Lane, Apsley and Bennetts End among them. Close to a border, or somewhere tricky to explain? Asking is better than guessing, and so ring.

Anywhere the car stands — a drive at home, a side street, a car park, a filling station — we empty it on the spot, with no need to take it to us; that suits Nash Mills, a residential suburb, well.

AdBlue in a diesel tank in Nash Mills: the cost of fixing it

Not one flat figure would be honest, since each job differs. The price shifts first with how long, if at all, the motor has been running, and next with the quantity of AdBlue that went in. After that it depends on where the car is and whether a technician can reach it safely, which is simpler on an open driveway than in a tight spot behind Nash Mills Recreation Centre.

Before any quote, not after, every enquiry from Nash Mills opens with three questions: the fuel, the quantity, plus whether it ran. Those replies turn a range into a straight price.

You get that quote on the phone, before anybody sets off, and you pay on the day, by card or over the phone, with nothing upfront. Check your insurance whilst we are on the way: many include misfuelling cover.

Beside your car in Nash Mills, right now?

Then the most useful thing you can do is nothing to the car. Keys out, engine off, ignition off. Ring 0333 366 0103: AdBlue, roughly how much, plus if it ran are everything our engineers ask. Petrol in Diesel handles the rest across Hertfordshire, Nash Mills included.

Call 0333 366 0103