Don't Start It: AdBlue in a Diesel Tank in Cold Harbour
If AdBlue has gone into your diesel tank, leave your motor off and keep the ignition off. AdBlue is urea mixed in water. The harm starts once it is sucked through the lines — it won't ignite, and it will not combine with diesel. In Cold Harbour, AdBlue in a diesel tank caught before your engine runs usually means a drain and a thorough flush, just where the car is. No step comes before calling 0333 366 0103.
Those opening minutes: AdBlue in your diesel tank around Cold Harbour
Do these:
- Keys out — then nobody can power anything on.
- Close to moving traffic? Then put your hazards on.
- Which fluid, and roughly what volume? Save the bottle or the till receipt, and we can know.
- Our van finds you fastest with a postcode starting SP8 4, or just the name of a street close by, and so phone from the car.
Never:
- Do not start the motor, even for a moment to shift your car.
- Do not switch your ignition on. On many diesels that alone runs the fuel pump.
- Adding extra diesel doesn't work: AdBlue settles out instead of blending.
- Even a short stretch down Hawthorn Avenue is too far to drive the car.
- Draining your tank yourself beside the road isn't one to try.
Ask the people behind the counter to help you move your car off the island if you are at a forecourt in Cold Harbour, whether it is the Esso or elsewhere. Stopped on your own drive? Then it stays just as it is.
What AdBlue does in a diesel tank
Not your engine but your exhaust is where AdBlue belongs. From a dedicated tank it goes directly to your exhaust, cleaning what the engine lets out. Nothing in an injection pump is designed for this liquid — and no part of that was meant to go that way.
Inside a diesel tank it behaves really differently from fuel. It doesn't mix in. Heavier than diesel, it sinks and pools underneath it — the very place the pickup draws from. The first thing the system pulls through, once it runs, is the AdBlue. So a vehicle that had AdBlue poured in on a drive in Wyke last night, and has not been started since, is still the simple case: the AdBlue is lying at the bottom of the tank, and nothing has sucked it in.
Two kinds of damage come from there. As its water goes, the urea left behind crystallises, and the crystals block filters and settle in fine passages. And it's corrosive to some of the metals a fuel system is made from, so it keeps running on the parts it hits for as long as it remains there. A motor left standing in Cold Harbour with AdBlue already in its lines is worse by the morning; one with AdBlue only in its tank isn't. And there is the water: it offers no protection to the components that need it most — the high-pressure pump and every injector.
Why AdBlue in a diesel is frequently more serious than petrol
Put petrol in a diesel at the Shell and you have an issue of thin fuel. Blended through the diesel and sitting unused, it's no threat for now; using the motor is the damage.
AdBlue in a diesel is another matter: not thin fuel, but no fuel at all. It can't simply be run through, since it doesn't burn. 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's why the flush matters more with AdBlue than with petrol, and why starting the motor "to see" costs more here than almost anywhere else, whether the car is in Colesbrook or the middle of Cold Harbour.
As with petrol, there is good news. If the motor has not run, the AdBlue is still in that tank, and that tank is the easiest part of a fuel system to clear, wherever in Dorset the vehicle is sitting.
Cold Harbour: how AdBlue ends up in a diesel tank
Nobody means to do it. The AdBlue filler on plenty of vehicles sits right next to your diesel filler, at times under the same flap, and the two caps can look alike in poor light. It mostly happens outside the house, from a bottle bought on the journey home, rather than at the forecourt.
It tends to happen in a couple of familiar ways. Midway through the drop-off, the dashboard flags it up, and outside Wyke Primary School the refill is rushed. After work, a container goes in on a driveway near Broad Robin. Or the vehicle is topped up in the car park outside The Phoenix Inn, in poor light, by a person who has never opened that flap before.
Rented cars, new motors, company motors, or the second vehicle in a home with one of each: the least known cars see it the most. Anywhere around Dorset, Cold Harbour as well, the mistake does not change, and nor does the first response: leave it switched off.
Already started your engine with AdBlue in the diesel tank around Cold Harbour?
In that case, the AdBlue is no longer inside that tank. Through your filter, through the lines, and — with any running — on to the high-pressure pump and every injector: that's how far it has gone.
You may notice the engine running roughly, smoking, losing power, showing warning lights or cutting out, perhaps on the way back from King Edmund Green or halfway across Cold Harbour. Stop when safe. Turn off. Leave the vehicle off rather than restarting it to check. With each start, more of that is pulled through.
Cold Harbour lies under 50 miles from the M5; if you were on it, exit at the next junction and pull up somewhere safe rather than carrying on.
Distance matters: each mile pushes the AdBlue deeper in, so heading towards Wells, under 25 miles away, gives a much bigger job than crossing Cold Harbour to the car park by St Benedict. Let us know roughly how far it had come.
There is more to clean out once your engine has run, and our technicians do all of it where the vehicle has stopped. Permanent damage is very uncommon if it's noticed early.
What does an AdBlue drain on a diesel involve around Cold Harbour?
The vehicle stays where it is, whether that is a road beside Gillingham Youth & Community Centre, a drive, a layby or a filling station around Cold Harbour, and our van comes to it. Before anything else we ask what was put in, roughly how much, and whether the engine has been run, since those answers decide this work.
On the spot, the tank is then drained, and both the contaminated diesel and the urea come out as one. With AdBlue, far more than with petrol, flushing counts: the fuel system is flushed right through since what remains will not flush out unaided. After that, the fuel filter: flushed, or changed if it has to be. After that fresh diesel, then a check of your car. Roughly half an hour on site is usual for most jobs where your motor has not run. Our pumping gear is explosion-proof, and so a live forecourt is no problem, and it is hushed enough for a residential street late at night.
New diesel goes in to bleed the fuel system, and that's the final step. You head off as soon as we have started the car, and it makes no difference whether the car is on a drive around Cold Harbour or in a space at Gillingham (Dorset). It is tested on clean diesel to confirm it runs smoothly before our technicians go. The whole job is done where the vehicle is, so it never needs to be taken to a workshop. The insurer will want an engineer's report and the VAT invoice — each handed over once this job is done.
About Cold Harbour itself
Cold Harbour is a suburban area situated on the riverside in Dorset, with a mix of detached housing and a relatively low elevation of 77 metres. Cold Harbour lies near the towns of Gillingham and Wells, and is also close to the smaller settlements of Lodbourne and Peacemarsh. Cold Harbour is part of the wider South West region, and is approximately 98.6 miles from London. Cold Harbour has a population of around 3834 people, living in predominantly detached homes.
Cold Harbour and Dorset: AdBlue drains across the area
Throughout the SP postcode area, the vans taking AdBlue call-outs around Cold Harbour reach much of Dorset as well, Lodbourne, Gillingham and Peacemarsh included. Guessing doesn't help close to a border or somewhere tricky to pin down; phone and ask.
No moving is needed. In Cold Harbour, a residential suburb, a van that comes to you fits: the vehicle is emptied where it stands, whether in a driveway, a side street, a parking area or a forecourt.
What does AdBlue in a diesel tank cost to sort out around Cold Harbour?
There's no honest single price, because the jobs are not the same. What changes the cost is, first, whether the motor has been running and for how long; then how much AdBlue got in; and then where your car is and whether our van can reach it safely, which is simpler on an open driveway than in a tight spot behind The Slade Centre.
What was put in, what quantity, and whether the engine ran: every Cold Harbour enquiry begins with precisely those, before any quote, not after. Those answers narrow a range down to a single number.
Our quote is given during the call, before anyone sets off; payment comes on the day, by card or by phone, with nothing upfront. Many insurance policies include misfuelling cover, and so it's worth checking yours while we're on the way.
Still alongside the car around Cold Harbour?
Not touching your car is, right now, the most useful move you can do. Ignition off, engine off, keys out. Petrol in Diesel takes over the rest, in Cold Harbour or wherever in Dorset, after you call 0333 366 0103 to say it was AdBlue, about how big an amount, and if the engine ran.