Put Petrol in a Diesel Car in Limeslade? Don't Start It
If you have not started your engine as yet, do not. A drain and nothing else is almost always what a car needs while the petrol is still inside your tank and your engine has not yet run, which is why it's the following few minutes that matter, not how much was put in. Petrol in Diesel goes to your car wherever it has stopped in Limeslade or the remainder of Swansea, on the forecourt, at the roadside or on a driveway, and drains and flushes it there. Phone before everything else begins, so you'll see what follows after that.
What to do first about petrol in a diesel
- Never start the vehicle — and do not trust it if it fires up. This is the bit drivers have wrong about petrol in a diesel specifically. A petrol motor filled with diesel generally just cannot run, and so the person stops and the damage stops with them. A diesel filled with petrol typically starts, ticks over and pulls away without complaint for several miles. It's not all right. It is wearing out the fuel system while you drive.
- Diesel burns, and before it ignites it greases — that high-pressure pump, those injectors. Petrol manages only the burning. So leave the car's ignition off also: turning it on is usually sufficient to prime that system, and priming carries petrol from your tank into exactly those components.
- Don't pour diesel on top to weaken it. A diesel fuel system won't cope with petrol by percentage the way that advice implies, and topping up takes out nothing — it merely leaves you a bigger tank of the same mixture. The type makes no difference either: super unleaded is still petrol.
- We would much rather drive to a difficult location than have it started — so if you safely can, sit tight. Nothing is simpler to deal with than a vehicle that hasn't shifted. On the verge on William Gammon Drive, that means hazards on and keep the car.
- Check where you are before phoning. A postcode that starts SA3 4, and the name of whatever is closest to you. Otherwise the van circles instead of arriving.
- Dial 0333 366 0103. Let us know what got in, approximately how many litres, and if your car has fired. These three answers decide the full visit.
Petrol in a diesel Renault Megane, left at Swansea since this morning? The afternoon has cost you nothing — fuel sitting in a tank is harmless. It was the run in that pulled weakened diesel through your pump. Ring us before you move the car.
Our technicians will come out to you, clear your tank, clean the fuel lines then put clean diesel in so you can get home. So if petrol went into the diesel Volkswagen Passat in Limeslade and you are stranded outside M&S Food with a boot packed with shopping, phone us — and don't crank it a second time to get out of that bay. A mile or so at gentle throttle draws little of it, so such jobs are often the simple jobs.
Put diesel in a petrol motor and mostly it won't run, so the person stops there and the damage stops with them. Swap it — petrol into a diesel — and the engine fires up, ticks over and pulls away as though nothing had happened, whilst the high-pressure pump works without the lubrication the fuel is supposed to be providing. That is the trap, and it is why the diesel Skoda Octavia will have felt completely usual coming back from the local primary school. They always do. From the driver's seat there is nothing to alert you about, so nothing tells you. Phone us with approximately how far you travelled, and how hard; the second answer counts more than the first.
Your Audi A4 stays where it is in the car park outside The George for the whole job, which usually runs like this. First we ask what went in, approximately how much, and whether your engine has run since, because most of the work rests on those replies. Your tank is emptied of the polluted mix, the lines are flushed, and the filter comes off if it's a replaceable one. With fresh diesel in and your system primed, the car is started and tested, and once it's running smoothly you pull away.
By this point the tank is not where most of the problem is. Once a diesel has run, the mix is in your filter, your lines, the pump and its rail — and it does not come back out with the tank contents. A diesel Mercedes A-Class that got close to All Saints' Church Rooms needs the circuit purged, not cleared.
On a forecourt: removing petrol from the diesel
Pumps are where the work mostly begins, and where a big share of it ends. If you're still on the forecourt at Newton Garage, that's generally where the drain takes place — we operate on station forecourts routinely, with the station's agreement.
Before your engine has run — a forecourt is the one location it is stopped. The few seconds between reading your receipt and going for the key determine how much needs rinsing. Anywhere other than the forecourt — a car park, a driveway, a lay-by — the vehicle was fired up and moved to get there, so fuel was drawn from your tank, through the filter then into the high-pressure fuel pump. That means the fuel lines and the fuel filter require flushing as well as the tank. It is not a catastrophe, and our technicians can still put it right where the car stands.
The attendants will usually help you push the car clear of the pump so the next motorist can get past. That is worth doing. Cranking the car over four vehicle lengths? No.
Service near Limeslade
Limeslade is a residential suburb, and our vans head out to it and to the villages around it on those same rounds: Thistleboon, The Knab, Mumbles Hill, Mumbles and Oystermouth.
There are dedicated pages for nearly all places around Swansea, and the ones mentioned above are just the nearest neighbours — so yours being absent from the list tells you nothing at all about if our engineers come. Ring us and enquire rather than presuming — county lines above all, and wherever your satnav might get wrong.
See our map for the patch shown here. All of it is territory we serve: a kerbside, a forecourt, a drive, a car park. You do not drive your car anywhere.
Stopped at the kerb somewhere in Limeslade?
Not everyone finds a decent place to pull in. A routine call for us instead of a rare one: realised after setting off, ended up along the verge on Libby Way or at a lay-by with your hazards on.
Fine where you are? Stay by it. Not fine? Get out and clear of it. Every mile a diesel obliges you for on petrol pulls the mixture further into your fuel system — and oblige it frequently will, which is why your engine does not get restarted to limp somewhere safer. Driving on does your car far more harm than a technician heading out to an awkward location, and that's no problem for us.
Already run it? Petrol in a diesel over a couple of miles
Your M4 is the one that counts here, and lies under 10 miles from Limeslade. A drop in power, a rough idle, some smoke: those are the signs when they appear, instead of a tidy stop — and a wrongly fuelled diesel will often take you onto it and some way along before anything seems wrong at all.
Come off at the next sensible junction, switch off, and never start the vehicle to move it. Long drive? Anything approaching the under 5 miles to the nearest city and you should assume the lot — filter, pump, injectors, all of it got to by the mixture. Say that on the phone, because it alters what goes in our van.
Limeslade itself
Limeslade is a coastal suburban area in Swansea, situated approximately 4.2 miles from the city centre, with Limeslade being one of the many residential communities that make up the larger Swansea urban area. Limeslade sits at an elevation of 47 metres, overlooking the coastline and nearby landmarks such as Mumbles Hill. Limeslade is characterised by its predominantly detached housing stock, reflecting the area's residential nature.
When our technicians get to you in Limeslade: what happens
- The responses shape the work, which is why our engineers ask before quoting: what went in, how much of it, and whether your engine has run.
- Our engineers empty the tank of all the contaminated fuel.
- What is left in the fuel system should not be what caused the issue, so your fuel lines get purged and the fuel filter cleared.
- The system gets primed, on new diesel.
- It's fired up with fresh diesel in it, and our technicians make sure that it is running smoothly.
After that it's ready to set off. Everything is done where the vehicle is, so it never needs to be taken to a workshop, and when it has been noticed soon, long-term damage is very uncommon.
AdBlue in your diesel tank instead, in Limeslade?
If what was put in was AdBlue rather than petrol, the first rule is the same — do not fire it up — but the issue isn't. Petrol thins your diesel and strips the lubrication the fuel system relies on. Urea in water, AdBlue, and in a diesel tank that brings rust and build-up.
Our technicians handle both, and AdBlue removal around Limeslade has its own page with the details — including why it's often the more serious of the two.
How much is a petrol-in-diesel drain around Limeslade?
One figure wouldn't be fair here, since this is not one job. These are the things that shift it:
- Whether the motor has been run or driven. This is the big one.
- The tank's capacity, set against how much of the wrong fuel got into it.
- Which was put in: petrol or AdBlue.
- Where the vehicle is, and whether a van can sensibly reach and work on it.
A firm answer rather than a range is what you get for telling us three things: the car, the amount, and whether it has run. If it is not time-critical — the vehicle is at home and going nowhere — is fine too.
Questions we get about petrol in diesel in Limeslade
Fuel drains on a Limeslade petrol station forecourt
Yes — forecourts are where a good part of this gets done. Tell us which one you are at when you call and we'll tell you if we can work there. With the site's permission our technicians visit Texaco and the other forecourts around town all the time.
How much petrol is too much for a diesel?
Proportion settles it rather than litres — and more than either, whether your engine has run. An almost empty tank with five litres in it, against a full one with the same five: separate scenarios, definitely. Either way, the work needed comes down to one thing, which is if the fuel system has had that mixture sucked through it.
I drove the car after putting petrol in my diesel. Now what?
Pull in somewhere safe, switch off, and leave the vehicle off. Driving is what moves the trouble from the tank into your pump and injectors — but it is fixable a lot more often than motorists assume, and the single most valuable thing you can do now is not restart the vehicle.
Fuel drains and manufacturer warranties
It is not a change, so a drain then flush carried out correctly doesn't invalidate a manufacturer's warranty. Running a diesel on petrol is the thing more likely to cause an argument with one, which is another reason to leave the car switched off.
Two-stroke oil in your tank, and then home?
No. It belongs to a separate problem from a different era, and petrol has diluted something no oil of that kind replaces. Your tank still has petrol in it after that, and your pump still has to cope with it.
Does petrol in a diesel have to go to a main dealer?
Not at all. We drain and clean the car wherever it is, so there's no need to take it to a main dealer.
Is your vehicle still with you?
Shut off is how the car remains.
Turn it off somewhere sensible then leave it off, if you have already driven it. This is recoverable from a lot more commonly than drivers fear, and a still, cold motor is the best place to be in.
Draining wrongly fuelled cars, Limeslade and the rest of Swansea, wherever they are. Kerbside. Forecourt. Home.