Put Petrol in a Diesel Car in Deptford?
With the tank still carrying the petrol and the motor not yet started, almost every job takes only a drain, so keep your engine off. That outcome is settled in the minutes immediately after filling up, and not by the amount that was put in. Across Deptford and the rest of Greater London, Petrol in Diesel drains the car and cleans it where it is, whether at a roadside, on a drive or at a forecourt. Call us and our team can explain what comes next before you try any more.
The next five steps: petrol in a diesel
- Whenever you drive, your pump and the fuel injectors wear down. That is why you do not crank it, and why you don't rely on it once it has started. The catch about petrol in a diesel in particular — the bit most people get wrong — is that it drives away normally for the first mile or two. Diesel in a petrol motor normally can't run at all, which stops the person and stops the harm with them. This one lets you carry on.
- Two jobs, diesel: it combusts, and on the way through it keeps that high-pressure fuel pump and injectors greased. Petrol only manages the one. That is why your ignition remains off as well — switch it on and you usually prime the system, and that's petrol leaving your tank for exactly those parts.
- Never water down it. Diesel put on top removes nothing, and so all you have is more of what was already there, because percentage isn't how a diesel fuel system copes with petrol. Super unleaded? Simply petrol. The type makes no difference.
- Stay still if it's sensible to. Hazards on, engine off, leave the vehicle. Wherever you have stopped — the verge on Douglas Way, anywhere — an awkward spot for us trumps a started engine, and nothing is quicker for us to sort out than a motor that never shifted.
- A van showing up rather than circling depends on two things: a postcode starting SE8 4, and whatever is nearest to you with a name on it. Keep both ready before you phone.
- Three details settle the whole visit: the stuff you tipped in, the ballpark quantity of it, and if anything has been turning since. The number is 0333 366 0103.
Nothing about the hours since has lost you anything. Fuel in a tank is idle, and so a diesel Volkswagen Passat left at the nearest station this morning is no worse at five than it was at nine — what drew thinned diesel through your pump was the drive in. Phone us before you set off to collect it.
Petrol in your Renault Clio, and it takes diesel? Shopping in the boot, you outside Deptford Supermarket, somewhere around Deptford? Then ring us, and leave your engine out of that — not even to exit that spot. Somebody comes to you. Tank emptied, fuel lines cleaned, fresh diesel in, and home you go. Light throttle over a mile pulls hardly anything, so these are usually the simple ones.
Injection pressure is the thing being lost. Petrol weakens diesel, and runnier fuel slips past the close-fitting components that are meant to build that pressure, so the further a diesel Nissan Qashqai travelled, the less well it held. Fine on the way out and flat on the way back is how that trip to Margaret McMillan Park went, then, and the tank is where to look. Pull in somewhere sensible, turn off and ring us.
Knocking? Uneven idle? White smoke, throttle gone soft? That's your wrongly fuelled Dacia Duster, a diesel, saying what is wrong with it. Stop wherever you happen to be, perhaps by Douglas Way Market, then leave the restarting alone.
Fixed and starting aren't the same thing, and the difference is the system: our engineers flush it, and take your filter off where there is a workable one. Compare that with the certain tip you'll get — drain it, refill with fresh diesel. Only half right. Do exactly that to a diesel Mercedes E-Class near Shaftesbury Christian Centre and it'll start, which is precisely why the advice sounds sensible. Then the engine pulls the petrol left behind in your filter, and in the feed lines, straight back through the pump, since draining a tank does nothing whatever about fuel that has already left it. Phone us instead.
Can petrol be taken from a diesel at a forecourt?
Pumps are where this work mostly starts, and where a good part of that closes. If you are still on the forecourt at Valero, that's usually where this drain happens — our technicians work on garage forecourts all the time, with the owner's consent.
At a forecourt, the mistake is stopped with your motor never started, and no place else manages that. Fuel sucked out of that tank and through the fuel filter, all the way to your high-pressure pump, is what happens when your engine is fired up and the car is driven to where it is now: the car park, the drive or the lay-by, anywhere other than the forecourt. So the flush includes the fuel filter and your lines along with the tank. That's still not a calamity, and our engineers deal with it where the vehicle is. What decides it is whether the key was turned in the seconds after the till receipt was checked.
Push it out of the way if the staff suggest it, and they generally will. The next driver gets by the petrol pump, and that is worth doing. Starting it just to shift four car lengths is not.
Do we reach your side of Deptford?
As a small village, Deptford gets a frequent call, and its neighbours close by go along on the same journey: St Johns and New Cross, Greenwich and Isle of Dogs, Millwall.
Not on that list? It says nothing. The names above are only the closest few, and the majority of places across Greater London have a page of their own elsewhere on our site. Ring us and enquire instead of presuming, especially where you're on a boundary or anywhere your phone misreads.
The ground the page covers is on this map. Roadside, forecourt, driveway, car park: every bit of that is ground our engineers cover, and none of that needs the vehicle to move to us.
Broken down at the kerbside around Deptford
The chance to stop somewhere sensible does not come to everybody. A normal call for us and not a rare one: realised after setting off, landed along the verge of Deptford High Street or at a lay-by with your hazards on.
Okay there? Remain with it. Not safe? Get out and clear of it. Every mile a diesel obliges you for on petrol drags that mix further into the fuel system — and oblige it usually will, which is why your motor doesn't get restarted to limp somewhere better. A technician coming to a difficult location is no problem for us, and it's far better for the vehicle than pressing on.
A couple of miles on petrol in a diesel: now what?
Here is where the local M11 counts, under 10 miles out of Deptford. A loss of power, an uneven idle, smoke: those are the symptoms when they arrive, rather than a tidy stop — and a misfilled diesel will usually take you onto it and some distance along before anything feels wrong at all.
Come off at the next safe exit, turn off, and never start it to reposition. Long drive? Anything approaching the under 5 miles to the nearest city and you should presume the lot — filter, pump, injectors, all of that got to by the petrol. Say that on the call, since it changes what goes in our van.
Where's Deptford?
Deptford is a locality in south-east London, situated on the south bank of the River Thames at an elevation of around 9 metres. Deptford lies close to the city centre, approximately 4.8 miles from central London, and is near other areas such as St Johns, New Cross, and Greenwich. Deptford is predominantly composed of flat dwellings and has a population of around 10,585 people. Deptford's riverside setting has influenced its development over time.
What happens when we arrive with you around Deptford
- The responses change the work, which is why our technicians ask before giving a price: what got in, how much of that, and if your engine has run.
- The contaminated fuel is drawn from the tank.
- Fuel lines are purged through and the filter cleared, leaving nothing in the system that caused any of this.
- The fuel system gets bled, on fresh diesel.
- It is run with fresh diesel in it, and our engineers make sure that it's running correctly.
The vehicle is then ready for you to pull away. Permanent damage is very uncommon when it has been noticed early, and as all of this is done where the car is, it never needs to be taken to a workshop.
AdBlue in a diesel tank around Deptford is a distinct problem
Don't crank it: that opening step stands whether what got in was AdBlue or petrol. What differs is this fault itself. Petrol thins your diesel and strips the lubrication the fuel system relies on. AdBlue is urea dissolved in water, and in a diesel tank it leads to rust and deposits instead.
Both are ours. There's a separate Deptford page for AdBlue removal, with the full story on it — including the reasons it usually turns out to be the worse of the two.
What a petrol-in-diesel drain will cost in Deptford
One number wouldn't be honest here, because this isn't one job. These are the things that move it:
- This is the key one: whether the motor has been started, or driven.
- How much of the wrong fuel got in, measured against how much that tank takes.
- Which went in: petrol or AdBlue.
- Where is it? And can a van reach it and work there safely?
A straight answer instead of a range is what you get for telling us three things: your vehicle, the quantity, and whether it has run. If it isn't urgent — the car is at home and going nowhere — is fine too.
Petrol in diesel questions from Deptford drivers
I am on a forecourt in Deptford. Can you drain it here?
Plenty of what our engineers do gets done nowhere else. So yes. Tell us which one you are at when you ring and we will tell you if our technicians can work there. With the owner's permission our engineers visit Sainsbury's and the other forecourts nearby regularly.
How much petrol in a diesel is too much?
Litres aren't the measure. Proportion is, and far more than either, it matters if anything has been run. Five litres in an almost empty tank is a different case from five in a full one — but either way, the thing that settles how much work is needed is whether that mix has been pulled through the system.
Already driven it with petrol in your diesel? What then?
Somewhere sensible, then stop, then switch off and keep it off. Driving takes the issue along — out of that tank, into your pump and injectors. People fear it a good deal more than the recovery rate warrants, mind. The one really helpful thing left to you isn't restarting the car.
Is a fuel drain going to void my warranty?
A manufacturer's warranty survives a drain then flush done to a good 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 switched off.
Can I just add two-stroke oil and drive home?
No. It belongs to a different problem from a separate era, and petrol has thinned something no oil of that kind puts back. Petrol remains in that tank after that, whatever else goes in, and your pump gets no reprieve from it.
Does petrol in a diesel have to go to a main dealer?
Wherever the vehicle is, we drain and flush it there, so a drive to the main dealer doesn't come into it.
Still with your vehicle?
Keep it turned off.
Switch it off somewhere safe and keep it off, if you have already driven it. Cold and still, a vehicle is in the best place available — and motorists fear this far more than the recovery rate warrants.
On-site fuel draining in Deptford and across Greater London — at the roadside, on the forecourt or at home.