Don't Start It: AdBlue in a Diesel Tank in Loughton
AdBlue in your diesel tank? Then leave your engine off — and the ignition as well. Water with urea mixed in it: that's AdBlue. Not like fuel, it neither ignites nor mixes, and nothing starts till your engine sucks it round. If the motor has not run yet, AdBlue in a diesel tank is usually drained and thoroughly cleaned where the vehicle stands around Loughton. Nothing comes before ringing 0333 366 0103.
Your next steps right now, Loughton: AdBlue in the diesel tank
Things to do:
- So nobody can turn your ignition on, pull the keys away.
- Hazards on, if moving traffic is anywhere close.
- Hold on to the till receipt or the empty bottle, and so you can tell us what was put in and roughly how much.
- Give us a postcode starting MK5 8, or whichever street is nearest, and the van reaches you straight — so call from wherever you are.
Never do these:
- No starting the motor — not for a second, not to shift the vehicle.
- Do not switch your ignition on. On plenty of diesels that alone runs the fuel pump.
- AdBlue doesn't dilute in diesel — it separates out — so adding extra fuel will not thin it.
- Don't drive the car anywhere, not even a short way along Bradwell Road.
- No emptying it yourself, at all, at the verge.
Rolling the vehicle away from the island is a job for attendants to help with, wherever Loughton forecourt you're on, the Texaco or any other. If you're on your own drive, leave it exactly where it sits.
What does AdBlue do in a diesel tank?
The motor isn't what AdBlue is made for; your exhaust is. From a separate tank it is fed directly to your exhaust, cleaning what your engine emits. Not one side suits the other: urea does not belong in a pump, and a pump can't deal with urea.
It doesn't blend. After it is poured into the tank, AdBlue behaves not at all like fuel. The intake sucks fuel from the lowest part of that tank, and that is just where AdBlue ends up: being denser than diesel, it sinks. When the pump runs, the AdBlue is top of the list to be pulled through. Before then it sits beneath the diesel, and that is how a vehicle topped up in Great Holm yesterday and not switched on stays the simple case, as long as nobody turns your key.
From there it causes two kinds of damage. What remains when the water goes is urea, which forms crystals: they settle in narrow channels and block filters. Worse, it attacks certain metals in the fuel system, and carries on until it is cleared out. Where the AdBlue has reached the pipework, leaving it overnight around Loughton leaves things worse. In the tank only, waiting does nothing. Diesel lubricates the injection pump and each injector as it passes; water offers none of that, and that is a separate kind of damage.
Petrol or AdBlue in a diesel: why AdBlue is commonly worse
Petrol put into a diesel on Shell's forecourt leaves the fuel watery — that's the whole problem. Mixed into your diesel and left unused, it is harmless for now; using your engine is the damage.
The trouble with AdBlue in a diesel is a completely unsuitable substance. Not burning, it cannot simply be run through. It doesn't stay mixed, so it cannot be thinned. And crystals and corrosion do not wash out with the next tank of fuel. That's why the flush matters more with AdBlue than with petrol, and why starting your motor "to see" costs more here than almost anywhere else, whether the car is in Crownhill or the middle of Loughton.
The good news is the same as with petrol. Wherever across Buckinghamshire the car has come to rest, an unrun motor means the AdBlue still in the tank: the simplest bit of any fuel system to empty.
AdBlue in a diesel tank around Loughton: how it ends up there
No one means to do it. The AdBlue filler on plenty of vehicles rests right next to the diesel filler, occasionally under the same flap, and the two caps can look alike in poor light. Most of the time it happens with a bottle bought on the way home and poured in on the driveway, not at the pump.
Usually, it happens in one of a few familiar ways. A warning light comes on during the school run, and the top-up happens in a hurry outside Loughton School. After work, a container is tipped in on a driveway near Clover Close. Another pattern: dim light, the car park outside Talbot Inn, and a driver opening that flap the first time.
Hired motors, brand-new vehicles, company motors, or the spare vehicle in a home with both fuels: the least known vehicles get it most. Leave it off: that is the first response to the same mistake, wherever around Loughton or the rest of Buckinghamshire you are.
Already started your engine with AdBlue in your diesel tank in Loughton?
In that case, the AdBlue is no longer in that tank. It's been drawn through the fuel filter and your lines, and if your motor ran for any time, it has reached the high-pressure pump and your injectors.
Rough running, smoke from the exhaust, dropping power, dashboard warnings or cutting out: any might show up, perhaps part way across Loughton or coming back from Sports Ground. No restarting to test: pull over when it is safe, then switch it off. More of it is pulled through with each start.
Loughton sits under 5 miles from the M1; if you were on it, exit by the next junction and pull up somewhere safe instead of driving on.
Every mile pushes the AdBlue further in. That is why a hop across Loughton to park near All Saints Church and a drive of under 3 miles for Milton Keynes are such distinct jobs. About how far it had come is worth telling us.
There's more to clean out once your engine has been run, and our engineers do all of it where the car has ended up. If it's caught early, lasting damage is very uncommon.
Draining AdBlue in a diesel around Loughton: what it takes
A street beside Loughton Equestrian Centre, a drive, a lay-by or a forecourt: anywhere your vehicle has stopped in Loughton, we come to it. The job depends on three answers, and our technicians ask for first — what was put in, the amount, and whether the motor has run.
On the spot, your tank is then emptied, and all of the contaminated diesel and the urea leave as one. With AdBlue, more so than with petrol, flushing matters: the fuel system is cleaned all the way through since residue won't wash away by itself. A test of the vehicle comes last, after fresh diesel is added and the filter is flushed or, if necessary, swapped. Not run? In that case expect about half an hour once we are there for most jobs. Explosion-proof pumps make a busy forecourt sensible to work on, and they're quiet enough to spare the neighbours at night.
Bleeding the system with fresh diesel comes at the end. Firing it up comes next, and then you set off from where the vehicle is parked, at Milton Keynes Central or on a driveway in Loughton. It's tested on new diesel to make sure it runs properly before our technicians go. Our engineers do it all wherever the vehicle has ended up, and it never has to go to a garage. Insurers ask for a VAT invoice and an engineer report, and both come afterwards.
About Loughton and where it is
Loughton is a suburban area in Buckinghamshire, situated near the city of Milton Keynes and approximately 45 miles northwest of London. Loughton lies in a low-lying area at an elevation of around 78 metres, surrounded by other residential areas such as Shenley Church End and Knowlhill. Loughton is characterised by its predominantly detached housing stock, reflecting its development as a residential suburb. Loughton is also close to historic sites like Bradwell Abbey, indicating a longer history of settlement in the area.
AdBlue drains in Loughton and across Buckinghamshire
Over the MK postcode area, the teams answering AdBlue jobs around Loughton reach much of Buckinghamshire as well, Shenley Church End, Knowlhill and Bradwell Abbey among them. Assuming won't help by a county line or somewhere hard to describe; ring and check.
Loughton is a residential suburb, and an on-site drain suits it: whether the vehicle is on a home drive, a residential street, a car park or a forecourt, our engineers drain it where it is, so it never needs to be shifted to us.
What AdBlue in a diesel tank costs to put right around Loughton
Not one flat figure would be fair, because each job differs. The cost shifts first with how long, if at all, the engine has been running, and next with the amount of AdBlue that got in. After that it turns on where the vehicle is and whether a technician can get to it safely, which is simpler on an open driveway than in a tight spot behind Shenley Leisure Centre.
With that in mind, every enquiry from Loughton opens by asking the same trio — which fluid went in, what quantity, whether it ran — ahead of any quote. With those replies, the range shrinks to one fixed number.
You hear that price by phone, before anyone sets off, and you pay on the day, by card or over the phone, with nothing upfront. Plenty of insurance policies include misfuelling cover, and so it is worth checking yours while we are on the way.
In Loughton and still alongside your car?
Right now, the best thing to do with the car is to not touch it. Keys out; motor and ignition off. Call 0333 366 0103 and tell us it is AdBlue, about how much, and if it's run. Petrol in Diesel takes it from there, in Loughton or anywhere around Buckinghamshire.