Skip to content

Petrol in Diesel

0333 366 0103

Perry Green: AdBlue in the Diesel Tank? Leave It Off

If AdBlue has got into your diesel tank, keep your motor off and keep your ignition off. AdBlue is urea mixed in water. As it is water-based, it won't ignite and won't blend with diesel; trouble only comes once your pump begins pulling it. A drain and a thorough flush, done where the car is in Perry Green, is usually all AdBlue in a diesel tank takes — if it is caught before your motor has run. Ring 0333 366 0103 before you do anything else.

Call 0333 366 0103

Those opening minutes: AdBlue in the diesel tank in Perry Green

Do these:

  • Pull your keys out, and so nobody switches the ignition on.
  • Hazards on, if moving traffic is at all near.
  • So you can give us which liquid it was and roughly how much, save your receipt or the empty bottle.
  • Call us from where you are. A postcode starting SG10 6, or the name of the nearest street, brings the van to you without a search.

Not to do:

  • Moving your car even a short way is no reason to fire up the motor.
  • Turning the key to ignition alone sets the pump going on plenty of diesels. Avoid it.
  • Do not top up with diesel to dilute it. AdBlue doesn't dilute in diesel; it separates out.
  • Any driving at all is to be avoided, including a short way along Stansted Hill.
  • No draining it yourself, either, at the verge.

The staff working at any Perry Green filling station — the the nearest petrol station among them — will usually lend a hand pushing it clear if you ask. If you're on your own drive, leave it precisely where it stands.

AdBlue in a diesel tank, and what it does there

Meant for the exhaust, AdBlue has no business in your motor. Stored in a separate tank, it is injected into the exhaust to clean the fumes. No part inside a fuel pump is designed for this fluid — and none of that was intended to travel through one.

Tipped in with the diesel, it keeps apart instead of mixing — entirely different from fuel. Heavier than diesel, it drops and pools underneath it — the same spot the intake draws from. Simplest of all: one that got AdBlue in Allens Green overnight and has not been started since. The AdBlue sits at the base of your tank, undrawn — but it would be the first thing through if the motor starts, ahead of any diesel at all.

From there it does two kinds of harm. It attacks some metals used in fuel components, working on whatever it touches till it is removed from your system. And once the water evaporates, the urea forms crystals that block filters and lodge in narrow channels. Lines carrying AdBlue spell damage overnight for a vehicle parked in Perry Green. Only inside your tank, it stays stable. And there's the water: it offers no protection to the components that need it most — the high-pressure pump and each injector.

Draining AdBlue from a diesel tank in Perry Green

Why is AdBlue in a diesel frequently the bigger fault?

Petrol pumped into a diesel on Pace's forecourt leaves your fuel watery — that is the main issue. It mixes with your diesel, and whilst it is inside your tank it causes no harm; the damage comes from running your engine on it.

With AdBlue in a diesel, the fluid itself is plainly the wrong one. It doesn't burn, so it cannot just be run through. It does not 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 the motor "to see" costs more here than nearly anywhere else, whether the car is in Kettle Green or the middle of Perry Green.

The same good news holds as with petrol. Emptying a tank is the simplest part on a fuel system, and without running, the AdBlue remains in there — wherever in Hertfordshire the vehicle sits.

Perry Green: how AdBlue ends up in a diesel tank

Many motors put the AdBlue cap beside the diesel cap, occasionally under a single flap, and after dark the two can appear the same. Nobody means it. Mostly it's never the filling station: someone buys a container heading home and tips it in at home.

It tends to happen in a couple of familiar ways. Hurrying, outside St Andrew's CE Primary School and Nursery, after a warning lamp flashed on during the school run, a parent refills the car. After work, a bottle goes in on a driveway close to Danebridge Road. Another pattern: darkness, a pub car park by The Prince of Wales, and someone using that flap the first time.

It takes place most in the vehicles motorists know least: a hire car, a new car, a company car, or the second vehicle of a household with one diesel and one petrol. Same slip, an identical first response — keep it switched off — anywhere you are around Perry Green or the remainder of Hertfordshire.

Started the motor with AdBlue in the diesel tank around Perry Green?

Then the tank is no longer where the AdBlue is. The filter and lines have had it pulled through, and any running time takes it on to the injection pump and every injector.

Expect lumpy running, exhaust smoke, falling power, lights on the dash, or a stall — returning from Side Hill Wood, say, or part way across Perry Green. Stop when it is safe. Switch off. Keep it off rather than testing it again. With each start, more of it is pulled through.

On the M11, under 5 miles from Perry Green, the first junction is where to leave, and anywhere sensible is where to stop — not carrying on.

Each mile pushes the AdBlue deeper into the system. That's why a hop across Perry Green to park beside St Thomas and a drive of under 25 miles for Chelmsford are very distinct jobs. Approximately how far had it come? Tell us.

There's more to rinse out once your engine has been run, and we do all of it where the car has stopped. Noticed quickly, it very rarely leaves lasting damage.

Perry Green: how AdBlue is emptied from a diesel

Anywhere it has stopped in Perry Green — a forecourt, a layby, a drive, a road beside Large Figure in a Shelter — the van travels to the vehicle. What got in, about the quantity, and whether your motor has turned over: we check before all else, since those shape the work.

On the spot, that tank is then drained, and both the polluted diesel and the urea leave at once. The system is rinsed thoroughly, which counts more with AdBlue than with petrol, since what it leaves behind does not rinse out on its own. The fuel filter is flushed, or replaced where it needs to be; clean diesel goes in; and the vehicle is tested. Roughly half an hour on site is typical for most jobs where your engine hasn't run. Our pumping gear is explosion-proof, and so a live filling station is no problem, and it's hushed enough for a residential street after dark.

Priming the system with new diesel comes at the end. Firing it up comes next, and then you drive off from where the vehicle is parked, outside Sawbridgeworth or on a driveway around Perry Green. It is tested on new diesel to confirm it runs properly before our technicians leave. Our technicians do it all wherever your car has ended up, and it never needs to be taken to a garage. You receive a VAT invoice and an engineer report afterwards, which is what insurers ask for.

About Perry Green

Perry Green is a small village in Hertfordshire, situated inland at an elevation of around 85 metres. Perry Green lies approximately 24.7 miles north-east of London and 18.1 miles west of Chelmsford, near the villages of South-end, Green Tye, and Hadham Cross. Perry Green has a population of around 514 people, predominantly living in detached houses.

AdBlue drains around Perry Green and across Hertfordshire

Throughout the SG postcode area, the vans taking AdBlue call-outs around Perry Green serve most of Hertfordshire too, South-end, Green Tye and Hadham Cross among them. Near a border, or anywhere tricky to explain? Checking beats guessing, and so phone.

A mobile service fits Perry Green, a rural village: there's no need to take the car to us, because we empty it on the spot, in a driveway, a side street, a parking area or a filling station.

Perry Green: what AdBlue in a diesel tank costs to fix

Because the callouts differ, a single figure wouldn't be fair. The cost changes 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 rests on where the vehicle is and whether our van can get to it safely, which is easier on an open driveway than in a tight spot behind Square Form with Cut.

Which fluid went in, what quantity, and if it ran: every Perry Green call opens by asking precisely that, before any quote, never after. The answers turn a range into a straight quote.

The quote is quoted during the call, before anyone leaves; settling up comes on the day, by card or by phone, with nothing upfront. Many insurance policies include misfuelling cover, so it's worth checking yours while we are on the way.

In Perry Green and still beside the car?

Then the most helpful thing you can do is nothing to your car. Ignition off, motor off, keys out. Petrol in Diesel handles the rest, in Perry Green or anywhere in Hertfordshire, after you ring 0333 366 0103 to say it was AdBlue, about what quantity, and whether it ran.

Call 0333 366 0103