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Petrol in Diesel

0333 366 0103

Little Holbury: AdBlue in the Diesel Tank? Leave It Off

Motor off, ignition off: that's how you start if AdBlue has gone into your diesel tank. Chemically, AdBlue is simply urea in water. As it is water-based, it won't ignite and won't blend with diesel; trouble only starts once your pump begins drawing it. If your motor has not run yet, AdBlue in a diesel tank is generally emptied and carefully cleaned where the vehicle stands in Little Holbury. Phone 0333 366 0103 before you do anything else.

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AdBlue in your diesel tank in Little Holbury: the first few minutes

Things to do:

  • Keys out — then nobody can power anything on.
  • If you are at all close to moving traffic, put the hazards on.
  • Keep the receipt or the empty bottle, so you can tell us what was put in and about how much.
  • Call just where you are. Say a SO45 2 postcode or the nearest street name, and no one has to hunt for you.

Do not:

  • Shifting your car just a short way is no reason to start your motor.
  • Turning the key to ignition alone sets your pump running on many diesels. Avoid it.
  • Adding extra diesel does not help: AdBlue separates out instead of thinning.
  • Even a short stretch down Ivor Close is too far to drive the vehicle.
  • Draining the tank yourself beside the road isn't worth trying.

Moving the vehicle away from the island is a job for staff to help with, whichever Little Holbury forecourt you're on, the Esso included. If you're on your own drive, leave it precisely where it sits.

AdBlue in a diesel tank: what it does

The engine isn't what AdBlue is made for; your exhaust is. It goes into its own tank and is sprayed into your exhaust gas to fresh it. A fuel pump is not designed to cope with it, and AdBlue was never supposed to go through one.

Tipped in with the diesel, it stays apart rather than blending — entirely unlike fuel. Heavier than diesel, it sinks and pools underneath it — the very spot the pickup draws from. Once the pump runs, the AdBlue is top of the list to be pulled through. Before then it waits beneath your diesel, which is how a car filled in Blackfield yesterday and not started remains the straightforward one, provided nobody turns the key.

Two kinds of damage follow from there. Crystals and corrosion. As the water evaporates, it leaves urea that hardens in filters and narrow passages; and, because it eats at certain metals, each part it touches keeps suffering for as long as it remains inside. By daybreak, a vehicle parked around Little Holbury with AdBlue through its pipework grows worse; if it's only in that tank, nothing changes. Then there is the water: it offers no lubrication to the parts that rely on it the most — the high-pressure pump and each injector.

Draining AdBlue from a diesel tank in Little Holbury

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

A fault of thin fuel is what you get after filling a diesel with petrol at the Shell. No harm comes as long as it stays put, mixed into your diesel — only once your motor runs on it.

AdBlue in a diesel is a different matter: not thin fuel, but no fuel at all. Not burning, it can't just be run through. Crystals and corrosion stay after the next tankful, and AdBlue splits again from the diesel, and so thinning it won't work. Hence the flush matters so much, and trying your engine "to see" does more harm with AdBlue than nearly any other mistake — in Buttsash or the heart of Little Holbury alike.

The same good news holds as with petrol. Never run? Then the AdBlue sits just in that tank, the simplest bit of the whole system to empty, wherever your vehicle has come to rest in Hampshire.

How AdBlue ends up in a diesel tank around Little Holbury

It is not on purpose. Plenty of cars have the AdBlue inlet beside the diesel inlet, occasionally under a single flap, and mixing them up is easy after dark. It usually happens at home, from a bottle grabbed on the journey home, not at the filling station.

The ways it occurs are few and familiar. Rushing, outside Manor Church of England Infant School, after a warning light came on during the school run, a parent refills the car. A driver tips the bottle in at home, right off Long Lane, as the day ends. Or the vehicle is topped up in the car park outside The Old Mill Inn, in poor light, by a person who has never opened that flap before.

The least known vehicles see it most — rentals, new ones, company ones, and the other vehicle of a family with one of each fuels. Wherever you're in Little Holbury or the rest of Hampshire, it's the same slip and the same first answer: leave it off.

Started the engine with AdBlue in the diesel tank around Little Holbury?

Then the AdBlue has left that tank. Via the fuel filter, along the lines, and — given any running time — on to the injection pump and each injector: that is where it has gone.

Perhaps returning from Holbury Manor Park, or midway across Little Holbury, the motor might go rough, smoke, lose power, light up your dash or cut out. Stop as soon as it is safe, switch off, and do not restart the vehicle to check. With each start, more of that is pulled through.

Little Holbury sits under 10 miles from the M27; if you were on it, leave by the next junction and stop safely rather than carrying on.

Every mile carries the AdBlue deeper into your system. That's why a hop across Little Holbury to park near Holbury Manor and a drive of under 5 miles for Southampton are such separate jobs. About how far it had come is worth telling us.

There is more to clean out once your engine has been started, and our technicians do all of it where the car has stopped. Permanent damage is very uncommon if it is caught quickly.

Emptying AdBlue in a diesel around Little Holbury: what it takes

A street beside New Hope, a drive, a lay-by or a filling station: anywhere your vehicle has come to rest in Little Holbury, our engineers come to it. Which fluid was put in, roughly how much, plus if your engine has turned over: our engineers ask first, because those shape the work.

The contaminated diesel and the urea leave together after your tank is emptied, on the spot. A full flush matters much more with AdBlue than with petrol, since what remains will not wash away by itself. A test of your vehicle follows at the end, after fresh diesel goes in and your filter gets cleaned or, where necessary, swapped. About half an hour once we arrive is typical for most jobs where the motor has not run. The pumping gear is explosion-proof, and so a busy filling station is no fault, and it's hushed enough for a residential street late at night.

The last step is to bleed your system on new diesel. You set off as soon as our engineers have started the car, and it makes no difference whether the car is on a drive around Little Holbury or in a bay outside Netley. The test before our technicians leave is that it runs smoothly on fresh diesel. Since the job is done in its entirety where the car is, a garage never comes into it. Your insurer will want an engineer's report and your VAT invoice — both yours once the job is done.

About Little Holbury and where it is

Little Holbury is a small village in Hampshire, situated near the coast and close to the larger village of Holbury. Little Holbury lies at an elevation of 37 metres, within a short distance of Southampton and the surrounding countryside. Little Holbury has a population of around 1196 people, predominantly living in detached houses.

Little Holbury and Hampshire: AdBlue drains across the area

Our vans that answer AdBlue calls around Little Holbury also cover the spots round it, Holbury, Hardley and Roughdown among them, and most of Hampshire beyond, across the SO postcode area. Assuming doesn't help close to a county line or anywhere tricky to pin down; ring and ask.

No towing is needed. In Little Holbury, a coastal village, a mobile service works: your car is drained where it stands, whether in a driveway, a residential street, a parking area or a filling station.

Little Holbury: what AdBlue in a diesel tank costs to fix

No single price could be fair, because each job is different. Three things shift the price: whether the engine has been running and for how long, how much AdBlue got in, and where the vehicle is. That last one turns on whether our van can get to it safely, and an open drive is simpler than a tight spot behind The Good Shepherd.

Which fluid got in, what quantity, plus if it ran: every Little Holbury call opens by asking precisely that, ahead of any quote, not after. Their answers narrow the range down to one figure.

The quote is given during the call, before a van sets off; payment happens on the day, by card or over the phone, and nothing upfront. Misfuelling cover comes with many insurance policies, so it is worth looking at yours before the van arrives.

In Little Holbury and still alongside the vehicle?

In that case, do nothing — that's the best step available. Motor off, keys out, ignition off. Petrol in Diesel handles the remainder, across Little Holbury or anywhere in Hampshire, after you call 0333 366 0103 to say it's AdBlue, about what quantity, and if the engine ran.

Call 0333 366 0103