Common Edge: Put Petrol in a Diesel Car?
Don't start the engine. While the fuel is still in your tank and the motor has not yet turned over, a tank drain is nearly always all it takes — and that gets determined in the next few minutes, not by how much was put in. Petrol in Diesel drains and cleans wrongly fuelled cars where they stand, across Common Edge and the rest of Lancashire, on the forecourt, at the roadside or on a drive. Just one ring our way will be sufficient: our team can show you what comes after this. Try it right away.
Petrol in a diesel: what to do now
- Feed a petrol engine diesel and it will typically not run at all, and so the driver stops there and so does the wear. Feed a diesel petrol and the engine starts, it ticks over, it drives off — fine for several miles. People have that reversed, which is the thing they get wrong about petrol in a diesel specifically. So do not start it. And if started, never trust it: that fuel system is wearing down while you drive.
- Diesel burns, and before it burns it lubricates — your high-pressure fuel pump, the injectors. Petrol does only the burning. So leave the ignition be as well: switching it on is commonly sufficient to prime the system, and priming pulls petrol from that tank into precisely those parts.
- Do not thin it. Diesel tipped on top takes out nothing, and so all you have is more of what was already there, since percentage isn't how a diesel fuel system tolerates petrol. Super unleaded? Still petrol. The type makes no difference.
- We would sooner drive to an odd spot than have it started — so if you safely can, stay still. Nothing is easier to sort out than a vehicle that has not shifted. On the verge on Hampshire Place, that means hazards on then keep the car.
- Before you ring, get your position. Anything closest to you with a label on it, plus a postcode starting FY4 5 — that is what decides whether the van turns up or circles.
- Dial 0333 366 0103. Anticipate three things — what got in, approximately how many litres, and whether your car has been run. Your replies determine whatever comes after.
The high-pressure pump spent that morning drive running on a fuel that had shed much of the protection it is made for. Diesel greases that pump, and your injectors with it, before any of the fuel ignites; petrol does the burning and none of the oiling. So take a diesel Volkswagen Tiguan, filled at quarter past eight, taken in to work, and left standing at Blackpool Pleasure Beach till it dawns on you close to eleven. Three hours of sitting have altered nothing about it. The few miles before that did a good deal, which is why the question our engineers put to you is about distance rather than hours. Phone. Leave the car just where it sits.
Put diesel in a petrol car and mostly it will not run, and so the person stops there and the wear stops with them. Flip it — petrol into a diesel — and the thing starts, ticks over and pulls away as though nothing had happened, while your high-pressure pump works without the protection your fuel is supposed to be providing. That's the catch, and it's why the diesel Mercedes C-Class will have seemed perfectly normal coming back from Our Lady of The Assumption Catholic Primary School, Blackpool. They always do. From the driver's seat there is nothing to warn you about, and so nothing alerts you. Call us with about how far you went, and how hard; the second one counts more than the first.
Nothing is getting worse while it stands. Whatever your diesel Audi A6 did on the way to Bridge House Road Playing Field, it is doing none of it now: your pump isn't turning. So take your time — but never drive the car home to buy yourself any.
Draining the Ford Kuga, changing your filter where there is a usable one, cleaning the fuel lines, putting clean fuel through the whole circuit: that is the job, and it's shaped by the worst of that sitting in the lines instead of in your tank by this point. Three things help when you phone from close to Our Lady of the Assumption — which side the filler is on, whether our van can pull up next to without blocking the road, and if the motor has run since you filled up. On-street is the usual place our engineers work, so the place itself is rarely the issue. A narrow parking bay is better than a vehicle driven somewhere more convenient.
The fuel filter, the fuel lines, the pump and the rail: that is where that blend is once a diesel has run, and it does not come back out with your tank contents. So that tank isn't where most of the damage waits by this point, and a diesel Volvo XC60 that got near Lindale Methodist Church needs the system flushed rather than cleared.
Pump-side drains for petrol in a diesel
The work begins at the pump, generally. Quite often the job ends on site too. Still at Morrisons? Then that is typically where it happens. Garage forecourts are normal for us, with the consent of the owner.
Nowhere else except the forecourt can the mistake be spotted with your engine still unstarted. Anywhere else — a car park, a driveway, a lay-by — your car was started and driven to get there, which means fuel was pulled from the tank, through the fuel filter then into the high-pressure pump. That is not a disaster, and we can still put it right where it stands. It does mean your lines and the filter need flushing as well as that tank, and that is settled by the few seconds between checking the receipt and going for your key.
Staff will normally help out pushing it away from the petrol pump, which lets the next motorist get through. Take the help. Firing it to roll four car lengths isn't.
Do our engineers cover your end of Common Edge?
Common Edge is a residential suburb, and our vans go out to it and to the places near it on those same journeys: Walkers Hill, Hawes Side, Marton Fold, Marton Moss Side and Squires Gate.
Not on that list? It tells you nothing. The places above are simply the nearest few, and the majority of towns in Lancashire have a page of their own elsewhere on this site. Call us and check rather than assuming, above all when you're on a border or anywhere the satnav misreads.
The map shows the area the page includes. Your car never needs to travel to us. We work across the lot — kerbside, forecourts, driveways, car parks.
Common Edge: stranded wherever you pulled up
Not everyone finds a sensible spot to pull over. If you realised after setting off and finished up along the verge on Milldyke Close, or in a lay-by somewhere with your hazards flashing, that is a normal call for us and not an unusual one.
Stay by the vehicle while it is wise to sit in it, yet out of the vehicle when it's not. It will often oblige. A diesel running on petrol limps along quite willingly, and that is the problem: fire it up to reach somewhere handier and the mixture goes further into the system with every mile driven. However awkward the spot, it's no bother for us to come to it, and that is much better for the car than driving on.
Driven it already? Pull over, then read this
under 3 miles out of Common Edge, the M55 is what matters here. It will often get you onto it, and some way along, before you spot a thing. Then it's some smoke, a rough idle and power draining away — not a tidy stop. Misfilled diesels rarely give you one of those.
Get off at the next sensible junction, turn off, and do not restart the vehicle to reposition. On a longer drive — anything close to the under 15 miles to the nearest city — assume the contamination has been through the fuel filter, your pump and the fuel injectors, and say so when you call. It alters what our engineers bring.
About Common Edge
Common Edge is a suburban area located on the coast of Lancashire, with an elevation of around 9 metres above sea level. Common Edge sits near several other local neighbourhoods, including Walkers Hill, Hawes Side, and Marton Fold. Common Edge is characterized by its predominantly semi-detached housing stock and is situated approximately 13 miles from Preston. Common Edge is also relatively distant from London, at around 199 miles away.
What our technicians do when we arrive with you in Common Edge
- The replies alter the work, which is why our engineers ask before quoting: what went in, how much of it, and if your motor has run.
- The tainted mixture is drawn out of that tank.
- Fuel lines are cleaned through and the fuel filter cleared, leaving nothing in the system that started any of this.
- Our engineers put new diesel in and bleed the fuel system.
- After it is started, we check it runs smoothly on clean diesel.
The vehicle is then ready for you to pull away. Permanent damage is very uncommon when it has been spotted quickly, and because all of this is done where the vehicle is, it never has to be taken to a garage.
A distinct matter: AdBlue in a diesel tank in Common Edge
Never fire it up: that opening rule stands whether what went in was AdBlue or petrol. What changes is the problem itself. Petrol does two things to diesel: thins it, and takes away the protection the system relies on. AdBlue? Urea dissolved in water. Tip that in with your diesel and you get corrosion instead, plus deposits.
Frequently the more significant of the two, AdBlue — and the details lives on its own Common Edge page. Both are ours to handle.
What a petrol-in-diesel fuel drain will cost in Common Edge
Our engineers cannot put one number on this page truthfully, as the job is not one job. What changes it:
- This is the big one: whether the engine has been run, or driven.
- How much of the wrong fuel went in, measured against how much the tank takes.
- Whether it's unleaded or AdBlue.
- Whether our van can sensibly reach the car and work on it, which rests on where the car is.
A firm answer rather than a range is what you get for telling us three things: the car, the amount, and if it has run. Not time-critical, with the car at home and going nowhere? Then does the job.
Petrol in diesel queries from Common Edge drivers
Fuel drains on a Common Edge petrol station forecourt
Plenty of what we do gets done nowhere else. So yes. Permission from the site is the condition. Given that, a forecourt like Asda is somewhere we're frequently, along with the rest of them locally — so name yours on the call and you'll hear if working there is possible.
Is there a safe quantity of petrol in a diesel?
Litres are not the measure. Proportion is, and much more than either, it matters if anything has been run. An almost empty tank with five litres in it, against a full one with the same five: distinct scenarios, definitely. Either way, the work required comes down to one thing, which is whether the fuel system has had that blend drawn through it.
Petrol in my diesel, and I have driven the vehicle
Switch off somewhere safe, then keep it that way after you stop. Driving shifts the trouble along — out of that tank, into the pump and injectors. People fear it a good deal more than the recovery rate warrants, mind. The one truly valuable thing left to you isn't restarting the vehicle.
Will a fuel drain void my warranty?
No. Carried out correctly, clearing and cleaning is no modification at all, and the warranty from your manufacturer is untouched by it. An argument over a warranty is likelier to come from running a diesel on petrol — so leave it turned off.
Adding two-stroke oil, then driving home
No. Two-stroke oil is an old workaround for a different problem and it does not replace what petrol has weakened. The tank still has petrol in it later on, and your pump still has to cope with it.
Does petrol in a diesel have to go to a main dealer?
Wherever your car is, we drain and clean it there, so a visit to the main dealer doesn't come into it.
Still with the vehicle?
That engine remains off.
If you have already driven it, pull in somewhere sensible, turn it off and leave it off. A stationary, cold car is the best position to be in, and this is recoverable from a lot more frequently than drivers assume.
On-site fuel draining in Common Edge and throughout Lancashire — at the roadside, on the forecourt or at home.