Howden Clough: Put Petrol in a Diesel Car?
With the tank still carrying the fuel and the motor not yet turned over, almost every job needs only a drain, so leave the engine off. That outcome is determined in the minutes immediately after filling up, rather than by the amount that was put in. All over Howden Clough and the rest of West Yorkshire, Petrol in Diesel drains the vehicle and cleans it where it stands, whether at a roadside, on a drive or at a forecourt. Our engineers can show you what the next stage is. Phone — that goes ahead of everything else.
The first five minutes: petrol in a diesel
- Give a petrol engine diesel and it will generally refuse to run at all, so the motorist stops there and so does the harm. Give a diesel petrol and the engine starts, it idles, it moves off — fine enough for a couple of miles. People have that backwards, which is the bit they get wrong about petrol in a diesel especially. So do not crank it. And if started, do not believe it: the fuel system is grinding as you drive.
- Turning the car's ignition on commonly primes your system, and priming is what pulls petrol out of the tank then into the pump and injectors. Those are the components diesel keeps lubricated on its way through, before it ignites. Petrol does the burning and none of the lubricating. Leave the car's ignition be.
- Do not put diesel on top to weaken it. A diesel fuel system won't cope with petrol by percentage as that advice implies, and topping up takes out nothing — it merely gives you a larger tank of the same mixture. The type makes no difference either: super unleaded is still petrol.
- Stay still if it is safe to. Hazards on, engine off, keep it. Wherever you have stopped — the verge on Risedale Close, anywhere — a tricky location for us is better than a started diesel, and nothing is quicker for us to sort out than a motor that never moved.
- Have your whereabouts ready before you phone. A postcode starting WF17 0 and whatever is next to you with a sign on it is the difference between a van showing up and our van circling.
- Ring 0333 366 0103. Expect three questions — what got in, roughly how many litres, and whether the engine has been run. The replies settle everything that follows.
Tonight, please, rather than Monday. Driving it home is the only thing not to do: a commute has sent real volume through your pump already, petrol-thinned diesel and plenty of it, and the return trip would roughly double the figure to no end. The Volkswagen Golf can sit outside Batley perfectly happily. Ring from the platform if easier; standing over us whilst our engineers work is not necessary.
Nothing tells you, since from behind the wheel there's nothing to be warned about. The diesel Skoda Octavia will have seemed completely ordinary on the way back from Windmill CofE (VC) Primary School, and they all do — which is the catch with petrol in a diesel instead of the reverse. Diesel in a petrol vehicle generally refuses to run, stopping the motorist and stopping the wear with them. Petrol in a diesel starts, idles, pulls away as though nothing had happened, and all the while your pump works without the lubrication its fuel is meant to supply. Tell us roughly how far, and how hard. The harder matters more.
Three answers settle much of the work: what was put in, approximately how much, and whether the engine has run since. We ask for those answers when we reach the car in the car park by The Pheasant. After that the polluted blend comes out of that tank, your lines are flushed, and where your Nissan Qashqai has a serviceable filter, it comes off. After fresh diesel is in and the fuel system primed, we start the car and make sure it runs properly before you set off.
Injection pressure is the thing being lost. Petrol dilutes diesel, and runnier fuel leaks past the precision parts that are meant to build that pressure, so the further a diesel Mercedes C-Class drove, the less well it held. Normal on the way out and sluggish on the way back is how that run to Birkby Brow Wood went, then, and the tank is where to look. Stop somewhere sensible, switch off and call us.
Repaired and starting are not the same thing, and the difference is your system: we flush it, and take your filter off where there is a serviceable one. Compare that with the sure of themselves suggestion you will get — drain the car, refill with new diesel. Half right. Do precisely that to a diesel Ford Kuga near Showcase Cinemas and it will start, which is exactly why the tip sounds plausible. Then the engine pulls the petrol left behind in the filter, and in the feed lines, straight back through your pump, because emptying a tank does nothing whatever about fuel that has already left it. Call us instead.
Forecourt draining for petrol in a diesel
Pumps are where this job mostly kicks off, and where a fair chunk of that closes. We operate on station forecourts routinely, with the site's consent, and so if you are still at the nearest petrol station that is typically where this drain gets done.
Nowhere else except the forecourt can it be halted with the engine still unrun. Our technicians can still put it right where it is, even away from the forecourt. In a car park, on a private drive or in a lay-by, the vehicle has been started and moved there, and that drew fuel through the fuel filter and into your high-pressure pump, right from your tank. None of that is a disaster, but the flush then has to go past your tank to your lines and the fuel filter, and the few seconds between seeing your receipt and reaching for your key are what decide that.
Roll the vehicle out of the way if the attendants volunteer, and they usually will. The next customer gets past the petrol pump, and that's worth doing. Rolling it four lengths does not warrant firing the motor.
Will our technicians cover your side of Howden Clough?
Howden Clough is a residential suburb, so we go out to the town and to anywhere around it on the usual trips: Copley Hill, Nook, Brownhill End, Upper Batley and Brown Hill.
If yours is not on this list it doesn't mean we never come — there are dedicated pages for nearly all places in West Yorkshire, and the ones named above are merely the nearest neighbours. Assuming is the mistake to resist, above all on the border or somewhere your satnav fails. Ring us and enquire.
The area this page covers is on this map. Every bit of it is territory we work: a kerbside, a forecourt, a drive, a car park. You never drive your vehicle anywhere.
Howden Clough: stuck wherever you pulled up
Some drivers get no suitable spot to pull over at all. If you noticed after setting off and ended up by the verge beside Nab Lane, or in a lay-by somewhere with the hazards flashing, that is a common call for us rather than a rare one.
Whether you sit by your car or stand clear of it turns on if sitting nearby feels wise. Do not fire up your engine to nurse it somewhere better — a diesel running on petrol will often oblige, and every mile it obliges for is drawing that mixture further into your fuel system. A technician driving to a difficult location is no problem for us, and it's a lot better for the vehicle than driving on.
Some miles on petrol in a diesel: what now?
Your M62 is the one which matters now, and it sits under a mile from Howden Clough. A misfuelled diesel will often get you onto it and some way along before anything feels wrong, and the symptoms when they arrive are typically lost power, an uneven idle and smoke rather than a tidy stop.
Take the first exit that is sensible, stop there, and never restart it to move it. Long trip? Anything approaching the under 10 miles to the nearest city and you should presume the lot — filter, pump, injectors, all of it got to by the contamination. Say that on the phone, as it affects what goes in the van.
A little about Howden Clough
Howden Clough is a suburban area in West Yorkshire, situated near the River Aire and close to the city of Leeds. Howden Clough sits at an elevation of around 140 metres, with semi-detached housing being the predominant type of accommodation in the area. Howden Clough is located near several other local places, including Copley Hill, Nook, and Brownhill End, and is approximately 5.8 miles from Leeds city centre.
Once our technicians arrive with you around Howden Clough: what follows
- Our engineers check what got in, how much, and if your engine has run. The responses shape the work, which is why we ask before pricing.
- Out flows the tainted mixture.
- Fuel lines are purged through and the fuel filter cleaned, leaving nothing in your system that caused any of this.
- The system gets bled, on clean diesel.
- It is fired up with new diesel in it, and we check that it's running properly.
From that point, you're ready to set off. There is no need for a workshop at any point, since the work is all done where the car is, and when it is noticed quickly, permanent damage is very unusual.
Howden Clough AdBlue removal is a different job
Don't crank it: that opening instruction holds whether what went in was AdBlue or petrol. What differs is the fault itself. Petrol dilutes your diesel and takes away the protection your fuel system depends on. AdBlue? Urea dissolved in water. Put that in with your diesel and you get corrosion instead, plus build-up.
AdBlue removal around Howden Clough has a page of its own with the detail on it, including why it's often the more significant of the two. We deal with both.
What a petrol-in-diesel fuel drain will cost around Howden Clough
Frankly, no single figure belongs on a page like this. This job differs. Here is what moves it:
- Started? Driven? Either answer counts more than anything else on this list.
- How much of the wrong fuel was put in, against how much that tank can hold.
- AdBlue or unleaded, whichever went in.
- Access: the vehicle's position, and whether working on it there's safe for a van.
Tell us your car, the amount and whether it has run, and you will get a firm answer rather than a range. For the car at home that is going nowhere and isn't pressing, works too.
Things we hear about petrol in diesel in Howden Clough
Can you do a fuel drain at a petrol station around Howden Clough?
A big share of this work takes place there, so yes. Tell us which one you are at when you call and we will tell you if our engineers can work there. With the site's agreement our engineers attend Shell and the other forecourts around town regularly.
How much petrol is too much for a diesel?
Ratio settles it instead of litres — and more than either, whether the motor has run. Five litres into a nearly dry tank is not five into a full one, no. But both land on the same query in the end: has that mix been drawn right through, or has it not?
Already driven it with petrol in the diesel? What now?
Switch off somewhere safe, then keep it that way after you stop. Driving is what moves the problem from the tank into the pump and injectors — but it is salvageable much more commonly than people fear, and the single most useful thing you can do now isn't restart it.
Will a fuel drain void my warranty?
A drain and flush carried out properly isn't a modification and doesn't void a manufacturer's warranty. Another reason to leave it turned off: running a diesel on petrol is the thing likelier to cause a disagreement with one.
Adding two-stroke oil, then driving home
Two-stroke oil solves a different problem, and an old one at that. Nothing it does puts back what petrol thinned. No. The tank still has petrol in it after that, and the pump still has to put up with it.
A main dealer for petrol in a diesel — needed?
Wherever the car is, our technicians drain and flush it there, so a trip to the main dealer does not come into it.
Is the car still with you?
Switched off is the way it stays.
If you have already driven it, stop somewhere sensible, switch it off and leave it off. Cold and parked, a car is in the best place available — and drivers fear this far more than the recovery rate warrants.
Mobile fuel draining in Howden Clough and throughout West Yorkshire — at the roadside, on the forecourt or at home.