Put Petrol in a Diesel Car in South Tottenham? Don't Start It
With that tank still holding the petrol and the engine not yet turned over, nearly every job requires only a drain, so leave the engine off. That outcome is settled in the minutes straight after the fill-up, and not by the amount that went in. Throughout South Tottenham and the rest of Greater London, Petrol in Diesel drains the car and flushes it where it is, whether at a roadside, on a private drive or at a forecourt. Phone before anything else starts, and you'll see what comes next.
What to do now about petrol in a diesel
- Never fire it up. Turned on regardless? Then do not trust it. Diesel in a petrol vehicle typically won't run, and so the motorist stops and the damage stops with them. Petrol in a diesel? It starts. It idles. It drives off fine, for a couple of miles. Drivers get that reversed. It's not okay — the fuel system is wearing down every mile you do.
- Two things, diesel: it burns, and on the way through it keeps your high-pressure fuel pump and injectors oiled. Petrol only does the one. That is why the ignition remains off as well — turn it on and you usually prime that system, and that is petrol exiting that tank for exactly those components.
- That advice assumes a diesel fuel system copes with petrol by percentage. It won't. Tip diesel on top and nothing at all is taken out; what you get is a larger tank of the same mixture. And no, the type makes no difference — super unleaded is still petrol.
- A motor that hasn't moved is the simplest one to deal with, and so stay where you are if you reasonably can. Stopped on the verge on Plevna Crescent? Hazards on, and keep the vehicle there. A tricky place suits us better than a started motor.
- Before you phone, gather your whereabouts. Anything nearest to you with a label on it, plus a postcode beginning N15 6 — that is what determines whether the van shows up or circles.
- What went in, approximately how much, plus if the motor has started — these three answers determine the entire job. Call 0333 366 0103 then tell us.
Do not take it home. The journey in has already pushed a real volume of petrol-thinned diesel through your high-pressure pump of your Volkswagen Golf, and the drive back would about double it for no gain at all. Phone us from the platform if that is handier. Our engineers don't need you hovering over the car at Stamford Hill while we work, and we'd far rather hear from you tonight than realise on Monday.
The call our technicians like runs like this: diesel BMW 3 Series, a couple of litres of unleaded, run a couple of miles, now switched off at Lidl. What we're truly asking is how much fuel the pump has drawn — not how long ago it was.
What we will want to know is whether that trip there was brief and cold, since that's where petrol is least able to burn correctly — and whatever doesn't burn can slip past the rings then into the engine oil. Right up to the moment somebody takes it home, a diesel Dacia Duster sitting in the car park by No.8 Seven Sisters holding a tank full of petrol in it is a simple job. Nothing worsens whilst it stands, so park it there overnight and ring us in the morning.
Clattering, an uneven idle, white smoke, a throttle gone soft. That is a misfilled diesel Audi A6 telling you what is wrong. Switch off where you have stopped, close to Saint Ignatius Catholic Church or anywhere else, and never restart it to find a better location.
It got a couple of streets and stopped. The throttle went limp, your idle turned lumpy, and the diesel Ford Kuga is now waiting close to The Community Church of God. That deadness is the fuel failing to build pressure properly not the motor failing — and as there is no dashboard light for it, vehicles in that position typically get driven once more before anyone phones. Please don't. Turn it off and phone us.
Forecourt drains for petrol in a diesel
It kicks off at a forecourt, generally. Regularly the work wraps up there as well. Our technicians work on petrol station forecourts all the time, with the station's consent, and so if you are still at Esso that's typically where the drain takes place.
Before the motor has run — the forecourt is the single spot it gets halted. Everywhere else — a car park, a private drive, a lay-by — the vehicle was fired up and driven to get there, which means fuel was pulled from your tank, through the filter then into the high-pressure pump. That's not a calamity, and we can still deal with it where it sits. It does mean your lines and the fuel filter need flushing as well as the tank, and that is determined by the few seconds between checking the till receipt and going for the keys.
The staff will usually help you push the car clear of the pump so the next driver can get past. That is worth doing. Starting the car just to move four car lengths is not.
Places our vans serve in South Tottenham
South Tottenham is a residential suburb, and our team are out to the town and to anywhere near it on the same journeys: Seven Sisters, Stamford Hill, Tottenham Green, Craven Walk and Tottenham.
Not on this list? It means nothing. The names above are only the nearest few, and nearly all locations around Greater London have a page of their own somewhere on the site. Phone and ask rather than assuming, especially where you are on the border or somewhere the satnav can't find.
Use our map for the ground shown on this page. Kerbside, forecourt, private drive, car park: the lot is ground our engineers work on, and none of that requires your car to come to us.
Stranded on the kerbside around South Tottenham
A chance to pull over somewhere safe does not fall to everyone. Hazards flashing in a lay-by somewhere, or pulled onto the verge beside St Ann's Road since you noticed after setting off — we take that call regularly enough that it's the ordinary kind.
Okay where you are? Remain beside it. Not okay? Move out and clear of it. Never fire it up to reach a safer spot. It'll go — a diesel on petrol normally obliges — and each mile of obliging pulls the mixture deeper into your fuel system. We will bring our van to a tricky location without any trouble, and for your car that's much better than carrying on.
A couple of miles on petrol in a diesel: what next?
Here is where the M11 comes into it — under 5 miles from South Tottenham. A misfuelled diesel will often get you onto it and some way along before anything seems wrong, while the symptoms when they come are typically a loss of power, an uneven idle and some smoke instead of a clean stop.
Take the next junction that's safe, stop there, and never restart the vehicle to move it. It affects what our technicians bring, and so tell us when you ring: on a longer trip — anything near the under 5 miles to the closest city — take it the contamination has been through the filter, the pump and the injectors.
A little about South Tottenham
South Tottenham is a suburban area in north London, situated near the lakes and waterways of the Lee Valley. South Tottenham has a relatively low elevation of 19 metres and is located close to the centre of London, with the city centre approximately 5 miles away. South Tottenham is characterized by its predominantly flat-type housing and is surrounded by other nearby places such as Seven Sisters and Stamford Hill.
What our engineers do when our engineers reach you in South Tottenham
- Three things get established before any quote — your fuel that got in, the quantity, and whether anything has been run since. Each answer shapes the work.
- Out comes the contaminated mixture.
- Our engineers flush the fuel lines and clear your filter, and so what is remaining in the system is not what caused the issue.
- The fuel system gets bled, on clean diesel.
- Our engineers turn it on and confirm it runs smoothly on fresh diesel.
From that point, you're ready to set off. We do everything wherever the car has come to a stop, which means it never needs to be taken to a workshop, and when it has been noticed early, it's very unusual for there to be permanent damage.
A distinct matter: AdBlue in a diesel tank in South Tottenham
The issue is not the same, though the opening instruction is — do not start it — if what got in was AdBlue instead of petrol. Petrol does two things to diesel: thins it, and takes away the lubrication your fuel system depends on. Rust and build-up are what a diesel tank ends up with instead, because AdBlue is urea in water.
Both are ours. There's a separate South Tottenham page for AdBlue removal, with the detail on it — including the reasons it frequently turns out to be the worse of the two.
What a petrol-in-diesel drain costs around South Tottenham
Our engineers cannot put one price on this page truthfully, as this job is not one job. What shifts it:
- This is the key one: whether the motor has been started, or driven.
- How much of the wrong fuel got in, against how much that tank holds.
- Which was put in: unleaded or AdBlue.
- Whether our van can sensibly get to your car and work on it, which hinges on where your vehicle is.
Tell us the car, the quantity and if it has run, and you will get a firm answer instead of a range. For the car at home that's going nowhere and is not pressing, is fine too.
Petrol in diesel: common questions in South Tottenham
At a petrol station around South Tottenham, can you do a fuel drain there?
Yes, and it is where a large share of this work gets done. Consent from the site is the condition. Given that, a forecourt like Sainsbury's is somewhere we are often enough, along with the rest of them locally — so name yours on the phone and you will hear whether working there is possible.
Is there a sensible amount of petrol in a diesel?
Whether your motor has run matters far more, though the ratio counts too, instead of the litres. Five litres into a nearly dry tank isn't five into a full one, no. But both land on the same question in the end: has that blend been sucked right through, or has it not?
Already driven it with petrol in your diesel? What now?
Stop sensibly. Off. Nothing after that. Driving takes the trouble along — out of your tank, into your pump and injectors. People fear it a good deal more than the recovery rate warrants, mind. The one really valuable thing left to you isn't restarting it.
My warranty — does a fuel drain void it?
A manufacturer's warranty outlasts a drain and flush done to a good standard, which is no change at all. What's likelier to start a dispute is a diesel that has been run on petrol. One more reason for the engine to stay off.
Adding two-stroke oil, then driving home
No. It belongs to a separate fault from a different era, and petrol has thinned something no oil of that kind replaces. Petrol remains in that tank later on, whatever else goes in, and the pump gets no respite from it.
A main dealer for petrol in a diesel — essential?
Wherever the car is, our technicians drain and clean it there, so a trip to the main dealer doesn't come into it.
Is the vehicle still with you?
Switched off is how it remains.
If you have already driven it, pull in somewhere sensible, turn it off then leave it off. This is recoverable from much more regularly than drivers fear, and a stationary, cold motor is the best position to be in.
Emptying misfilled motors, South Tottenham and the rest of Greater London, wherever they are. Roadside. Forecourt. Home.