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Petrol in Diesel

0333 366 0103

Petrol in a Diesel Car in Woolton Hill

If you have not turned on the engine yet, don't. A drain and nothing else is almost always what a car requires while the petrol is still in your tank and your engine has not yet turned over, which is why it is the following few minutes that matter, not how much was put in. Petrol in Diesel comes to the vehicle wherever it has come to rest in Woolton Hill or the remainder of Hampshire, on the forecourt, by the roadside or on a driveway, and drains and flushes it there. Ring us and our engineers will explain what follows from here before you try anything else.

Call 0333 366 0103

What to try next about petrol in a diesel

  • Give a petrol motor diesel and it will normally fail to run at all, so the person stops there and so does the harm. Give a diesel petrol and the engine starts, it ticks over, it drives off — all right for a couple of miles. Motorists have that muddled, which is the bit they get wrong about petrol in a diesel especially. So never crank it. And once started, never believe it: the fuel system is wearing as you drive.
  • Leave the ignition be also. Diesel has two tasks: it burns, and before it burns it greases your high-pressure pump and those injectors. Petrol handles the first but not the second. Turning your ignition on is commonly enough to prime the system, which carries this petrol out of that tank and into just those components.
  • That advice presumes a diesel fuel system copes with petrol by percentage. It doesn't. Put diesel on top and nothing at all is taken out; what you have is a bigger tank of the same mixture. And no, the octane makes no difference — super unleaded is simply petrol.
  • We'd rather come to an awkward place than have it started — so if you safely can, sit tight. Nothing is simpler to handle than a motor that has never moved. On the verge on Tile Barn, that means hazards on and leave the car.
  • Have your whereabouts ready before you ring. A postcode beginning RG20 9 and whatever is nearest to you with a label on it is the difference between a van showing up and our van circling.
  • Ring 0333 366 0103. Anticipate three things — what got in, approximately how much, and whether your car has been turned over. The replies determine whatever follows.

Nothing about the time since has cost you anything. Fuel sitting in a tank is dormant, and so a diesel Renault Megane parked at Newbury this morning is no worse at five than it was at nine — what drew diluted diesel through your pump was the run in. Ring us before you head off to fetch the vehicle.

The complicated part is the bay, not your fuel. Motors either side of you, a trolley shelter behind, and now and then a height bar on the way in that settles if a technician can reach you at all — so when you ring from a car park like the one outside Co-op Food, tell us how much room there's around you and which way round the vehicle is. Those we attend frequently. Should there be no space to work beside the diesel BMW 3 Series, it gets moved with your engine off, and not out of fussiness over a couple of seconds of running: priming happens at every start, more of the mix leaves your tank for your pump, and two shunts into a nicer bay have gradually made a worse job of what was merely a motor standing still.

A diesel injection system works hydraulically as well as chemically: your fuel has to hold pressure, not only burn. Thin that fuel and pressure which should build and stay built escapes past gaps instead, leaving the motor a weaker, later, less even delivery than it was engineered around. Petrol weakens diesel, and diesel has to be heavy enough to seal the precision parts it passes through — that's the entire process. It explains the usual Stafford Copse call too: a diesel Audi A3 that drove out without complaint and came back down on power, uneven at idle, possibly smoking a little. None of which is the motor failing, and that is the part worth hearing. The fuel has stopped acting like diesel. Put your fuel right and it stops.

Three things help when you ring from close to Woolton Hill Church Hall: which side the filler is on, whether a technician can pull up beside without blocking the road, and whether your engine has run since you filled up. On-street is the most common location our technicians work, and so the spot itself is seldom the issue — we'd far rather deal with a cramped parking space than with a motor that has been driven to somewhere more handy. We'll drain the Kia Sportage, change your filter where there is a usable one, flush your lines then put fresh fuel through the full circuit, because by this point the worst of it is sitting in your lines instead of in that tank.

By this point the tank is not where most of the problem is. Once a diesel has run, the mix is in the fuel filter, the lines, the pump and the rail — and it doesn't come back out with your tank contents. A diesel Hyundai Tucson that made it close to Hollington House needs the system cleared, not cleared.

Mobile fuel drain van at a diesel car in Woolton Hill

Can petrol be pumped out of a diesel at the forecourt?

Pumps are where this job usually begins, and where a large share of it closes. We work on station forecourts routinely, with the site's consent, so if you are still at Shell that is usually where this drain happens.

Nowhere but a forecourt can the mistake be spotted with the engine still cold. Our technicians can still sort it out where it sits, even away from the pumps. In a car park, on a private drive or in a lay-by, the car has been fired up and moved there, and that pulled fuel through the filter and into the high-pressure pump, all the way from that tank. None of that is a calamity, though the flush then has to go past your tank to your lines and the filter, and the few seconds between reading the till receipt and reaching for the key are what decide that.

Roll it out of the way if the staff volunteer, and they generally will. The next customer gets through the pump, and that is worth doing. Shifting the car four spaces does not merit cranking the engine.

Parts our team reach near Woolton Hill

Woolton Hill is a rural village, so our technicians are out to it and to the villages by it on the same journeys: Broad Layings, Highclere, Penwood, East End and Ball Hill.

Not on the list? That means nothing. The names above are only the nearest few, and the majority of places in Hampshire have a page of their own elsewhere on this site. Close to the border, or anywhere the satnav struggles with? Phone to check instead of assuming.

This map outlines the area this page includes. All of that is ground our technicians cover: a kerbside, a forecourt, a driveway, a car park. You never drive the vehicle anywhere.

Stuck on the kerbside somewhere around Woolton Hill?

Not everyone gets a suitable place to pull in. A routine call for us instead of a rare one: realised after setting off, finished up along the verge on Church Lane or in a lay-by with the hazard lights on.

Whether you remain by the vehicle or stand clear of it turns on whether staying nearby looks safe. Never restart it to reach a safer spot. It will go — a diesel on petrol usually obliges — and each mile of obliging draws that mixture deeper into your fuel system. However inconvenient the location, it's no problem for us to come to it, and that is a lot better for your car than carrying on.

Run it already? Stop, and read below

This is where the M4 comes in — under 10 miles away from Woolton Hill. A misfuelled diesel will frequently get you onto it and some way along before anything feels wrong, and the signs when they appear are usually a loss of power, a lumpy idle and smoke instead of a clean stop.

Get off at the next sensible exit, switch off, and do not restart it to move it. On a longer trip — anything close to the under 25 miles to the closest city — assume the contamination has been through the fuel filter, the pump and the injectors, and mention it when you call. It changes what our engineers bring.

Woolton Hill itself

Woolton Hill is a small village in Hampshire, situated inland at an elevation of 131 metres, with detached housing being the predominant type of accommodation. Woolton Hill lies near the villages of Broad Layings, Highclere, and Penwood, and is approximately 20 miles from the city of Winchester. Woolton Hill is also within commuting distance of London, being around 55 miles from the capital. Woolton Hill has a population of around 976 residents.

Once our engineers reach you around Woolton Hill: what follows

  • Our engineers check what went in, how much, and if your motor has run. The responses change the work, which is why our engineers ask before quoting.
  • The tainted mixture is pulled from that tank.
  • What is left in your system should not be what started the trouble, and so the fuel lines get purged and the filter cleaned.
  • Our technicians put clean diesel in and bleed the fuel system.
  • It is fired up with clean diesel in it, and our technicians check that it's running smoothly.

That leaves the car ready to drive away. Everything is done where the car is, so it never needs to go to a workshop, and when it has been noticed early, permanent damage is very rare.

AdBlue in a diesel tank around Woolton Hill is a different job

Do not start it: that first step stands whether what went in was AdBlue or petrol. What differs is the problem itself. The protection a fuel system depends on is taken away by petrol, which dilutes your diesel. AdBlue is urea dissolved in water, and in a diesel tank it brings corrosion and deposits in its place.

AdBlue removal around Woolton Hill has a page of its own with the details on it, including why it's often the more serious of the two. Our engineers cover both.

What a petrol-in-diesel fuel drain will cost around Woolton Hill

One price wouldn't be fair here, as this is not one job. These are the things that shift it:

  • Started? Driven? Either answer matters more than anything else on this list.
  • Wrong fuel in, against what that tank holds — that ratio.
  • The type of liquid in the tank, unleaded or AdBlue.
  • Where the vehicle is, and whether a technician can sensibly reach and work on it.

A straight answer instead of a range is what you get for telling us three things: the vehicle, the amount, and if it has run. Motor at home, going nowhere, nothing time-critical about it — is ideal for that.

Petrol in diesel questions from Woolton Hill motorists

Fuel drains on a Woolton Hill petrol station forecourt

Yes — forecourts are where a fair share of this gets done. Tell us which one you are at when you phone and we will tell you if our technicians can work there. With the station's consent our engineers attend Sainsbury's and the other forecourts locally routinely.

A couple of litres of petrol in a diesel — too much?

Litres are not the measure. Ratio is, and far more than either, it matters if anything has been run. Five litres into a nearly dry tank is not five into a full one, no. But both land on the same query in the end: has that mixture been sucked right through, or has it not?

Already driven it with petrol in the diesel? What then?

Turn off somewhere safe, and keep it that way after you stop. Driving shifts the issue along — out of that tank, into the pump and injectors. Drivers fear it a good deal more than the recovery rate warrants, mind. The one genuinely valuable thing left to you isn't restarting it.

Fuel drains and manufacturer warranties

A manufacturer's warranty withstands a drain then flush done to a proper standard, which is no alteration at all. A dispute over a warranty is likelier to come from running a diesel on petrol — so leave it turned off.

Can I just add two-stroke oil and drive home?

No. Two-stroke oil is an old remedy for a distinct problem and it does not put back what petrol has weakened. The tank still has petrol in it afterwards, and the pump still has to live with it.

A main dealer for petrol in a diesel — needed?

No. We drain and clean your car wherever it is, so there's no need to take it to a dealership.

Still with your vehicle?

Never turn it on again.

Driven it already? Then somewhere sensible, stop, switch off, and no restarting the car later on. Cold, still, going nowhere: that's the best position to be in. Drivers fear this a lot more than they need to.

Draining wrongly fuelled vehicles, Woolton Hill and the rest of Hampshire, wherever they are. Kerbside. Forecourt. Home.

Call 0333 366 0103