Put Petrol in a Diesel Car in Whitecraig? Don't Start It
With that tank still carrying the fuel and the engine not yet started, almost every job needs only a drain, so keep the motor off. That outcome is settled in the minutes right after filling up, rather than by the amount that was put in. All over Whitecraig and the rest of East Lothian, Petrol in Diesel drains the vehicle and flushes it where it stands, whether at a roadside, on a driveway or at a forecourt. Just one call our way is sufficient: we shall show you what follows next. Make this straight away.
What next? Petrol in a diesel, in order
- Don't start it — and do not believe it when it does start. Here is the thing drivers have wrong about petrol in a diesel in particular. A petrol engine filled with diesel normally just won't run, so the driver stops and the wear stops with them. A diesel filled with petrol usually starts, idles and drives away quite happily for several miles. It's not all right. It's wearing out that fuel system while you drive.
- Leave the car's ignition alone too. Diesel does two jobs: it ignites, and before it burns it lubricates the high-pressure fuel pump and those injectors. Petrol handles the first and not the second. Switching the ignition on is commonly enough to prime the system, which carries this petrol out of the tank and into precisely those parts.
- Do not put diesel on top to weaken it. A diesel fuel system will not handle petrol by percentage as that advice assumes, and topping up gets rid of nothing — it just gives you a fuller tank of the same mixture. The type makes no difference either: super unleaded is still petrol.
- A car that has not moved is the easiest one to sort, so remain where you are if you reasonably can. Pulled up on the verge on Deantown Drive? Hazards on, and keep the vehicle there. A difficult location suits us better than a started motor.
- Check where you are before calling. A postcode starting EH21 8, and the name of whatever is next to you. Otherwise our van circles rather than arriving.
- Call 0333 366 0103. Tell us what got in, approximately how much, and if the engine has fired. These three replies determine your whole job.
Can petrol be drained from your diesel on a forecourt?
A large part of the work ends up done at a forecourt, since that is where it usually starts. If you are still on the forecourt at BP, that's normally where the drain takes place — we work on petrol station forecourts regularly, with the owner's permission.
At a forecourt, it is halted with your motor never run, and nowhere else does it. Everywhere else — a car park, a drive, a lay-by — your car was started and moved to get there, which means fuel was drawn from your tank, through the filter then into the high-pressure pump. That is not a catastrophe, and our engineers can still sort it out where it is. It does mean the fuel lines and the fuel filter need rinsing as well as the tank, and that is determined by the few seconds between checking the till receipt and going for your key.
The staff will generally offer to push the vehicle away from the petrol pump so the next customer can get past. That's worth doing. Four vehicle lengths is not worth the risk.
The call we like goes like this: diesel Skoda Octavia, some litres of unleaded, done a couple of miles, now switched off at Tesco Extra. What we are really asking is how much fuel the pump has sucked — not how long ago it was.
Nothing alerts you, as from the driver's seat there's nothing to be warned about. Your diesel Peugeot 308 will have felt completely ordinary on the way back from the local primary school, and they all do — which is the snag with petrol in a diesel instead of the reverse. Diesel in a petrol car generally refuses to run, stopping the driver and stopping the harm with them. Petrol in a diesel starts, idles, pulls away as though nothing had happened, and all the while your pump keeps working without the lubrication its fuel is meant to supply. Tell us roughly how far, and how hard. The harder matters more.
A diesel Mercedes C-Class sitting in the parking area by Mercat Grill with a tank of petrol in it is an easy job, right up until somebody takes it home. Park it there overnight and phone first thing. Nothing worsens as it stands. What we will want to know is whether that trip there was short and chilly, since that is where petrol is least able to burn correctly — and whatever won't burn can slip past the piston rings and into the sump.
Sitting still, it gets no worse. Your pump is not turning, and so whatever happened on the way to Smeaton Glen in that diesel BMW 1 Series is finished happening. Time is yours. Just do not take it home on the motor to find more of it.
Petrol in a diesel does its damage as a ratio, which is the reason our technicians ask at all: the same few litres sitting in a nearly empty tank make a far stronger mix than they would in a full one. And petrol is rated on how well it withstands igniting under pressure — the opposite of what a diesel wants — so a stronger blend rattles more, smokes more, goes flatter. None of which means you need an answer ready. Almost nobody knows how full your tank was in a car collected two days ago, and our engineers work that out on site. Do phone the hire or company firm first, though: some agreements want them to approve the work, and that is far faster settled before than after. Then phone us about the Citroen C3 close to St John's Whitecraig.
Parts our vans cover near Whitecraig
The Byres, Inveresk, Monktonhall, Old Craighall, Stoneybank — every one of them on our journeys that bring us across to Whitecraig too, a coastal village.
Our technicians still come. Those places above are merely the immediate neighbours, and a page is there for the majority of towns around East Lothian, so an absence from the list isn't an absence from our coverage. Assuming is the mistake to avoid, especially on a boundary or somewhere the satnav goes wrong. Phone and enquire.
The ground the page spans appears on this map. We operate at the roadside, on forecourts, on driveways and at car parks throughout all of that, and the vehicle never needs to travel to us.
Stopped by the roadside somewhere in Whitecraig?
Some people get no sensible spot to pull in whatsoever. Hazards flashing in a lay-by somewhere, or pulled onto the verge beside Whitecraig Gardens East as you realised after setting off — our technicians take that call regularly enough that it is the usual kind.
Okay there? Stay by it. Not safe? Get out and away from it. Do not restart it to get to a better location. It'll go — a diesel on petrol usually obliges — and each mile of obliging drags the mix deeper into the fuel system. Pressing on does the car far more harm than a technician heading out to an inconvenient place, and that is no problem for us.
Petrol in a diesel, but the car has travelled
under 15 miles from Whitecraig, the local M8 is what matters now. It will often take you onto it, and some way along, before you notice a thing. Then it's some smoke, a rough idle and power draining away — not a clean stop. Misfuelled diesels seldom give you one of those.
Take the first junction that is sensible, pull up there, and never restart it to reposition. Assume the worst of it on a long drive. Anything close to the under 10 miles to the nearest city, and the mixture has been through the fuel filter, through the pump, through your injectors. Say so when you ring. What our engineers bring differs.
Whitecraig itself
Whitecraig is a small village in East Lothian, situated near the coast and approximately 6 miles east of Edinburgh. Whitecraig has a relatively low elevation of 34 metres and is characterised by predominantly flat housing. Whitecraig is part of the wider Edinburgh urban area, with nearby places including The Byres, Inveresk, and Monktonhall.
The visit in Whitecraig, step by step
- Our technicians ask first, price after. What went in? How much? Has your engine run? Those answers change what the work really is.
- Our engineers empty the tank of all the contaminated fuel.
- Lines cleaned, filter cleared. Whatever remains after that is not the thing that created the trouble.
- New diesel goes in, and then the fuel system gets primed.
- The motor is turned on and checked to confirm it runs correctly on fresh diesel.
Your car is then ready for you to drive away. Everything is done where the car is, so it never needs to be taken to a garage, and when it has been noticed early, long-term damage is very unusual.
AdBlue in the diesel tank instead, around Whitecraig?
Never crank it: that first step stands whether what got in was AdBlue or petrol. What changes is the fault itself. Petrol thins the diesel and strips the protection the system depends on. AdBlue is urea in water, and in a diesel tank it leads to corrosion and deposits instead.
Both are ours. There's a separate Whitecraig page for AdBlue removal, with the details on it — including the reasons it often turns out to be the worse of the two.
How much is a petrol-in-diesel fuel drain in Whitecraig?
Our engineers can't put one number on this page truthfully, because the job is not one job. What moves it:
- Whether your engine has been started or driven. This is the key one.
- Wrong fuel in, against what your tank holds — that proportion.
- Which went in: unleaded or AdBlue.
- Access: the car's position, and whether working on it there's safe for a technician.
The vehicle, the amount, whether it has run — give us those and the answer comes back firm rather than as a range. For your car at home that's going nowhere and isn't urgent, is fine too.
Petrol in diesel: common questions around Whitecraig
At a petrol station in Whitecraig, can you do a fuel drain there?
A large share of this work takes place there, so yes. Our technicians work at Tesco and the other forecourts locally all the time, with the station's agreement — tell us which one you are at when you ring and we'll tell you if our engineers can work there.
How much petrol in a diesel is too much?
Whether the motor has run counts far more, though the ratio counts too, rather than the litres. Five litres in an almost empty tank is a distinct case from five in a full one — but either way, the thing that decides how much work is needed is if that blend has been sucked through the system.
I drove the vehicle after putting petrol in my diesel. What next?
Switch off somewhere safe, and keep it that way after you stop. Not restarting it is the single most helpful thing available to you now. Driving does move the problem out of your tank then into your pump and injectors, yes, and it remains salvageable far more regularly than motorists expect.
Fuel drains and manufacturer warranties
A drain then flush carried out correctly is not an alteration and doesn't cancel a manufacturer's warranty. An argument 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?
What petrol has diluted is not replaced by two-stroke oil, which is an old fix for a distinct issue. So no. The pump still has to live with it, as the tank still has petrol in it after that.
Does petrol in a diesel have to go to a main dealer?
You do not need one. Your car is drained and flushed wherever it is, with no need to bring it to a main dealer.
Is your car still with you?
Switched off is how the car stays.
Already driven it? Then pull in somewhere sensible, turn off, and let the vehicle remain that way. This is recoverable from far more often than drivers fear, and a still, cold car is the best position to be in.
On-site fuel draining around Whitecraig and throughout East Lothian — at the kerbside, on the forecourt or at home.