Put Petrol in a Diesel Car in Hill? Don't Start It
With the tank still holding the petrol and your engine not yet run, almost every job needs only a drain, so keep your engine off. That result is determined in the minutes immediately after filling up, and not by the amount that was put in. Throughout Hill and the rest of West Midlands, Petrol in Diesel drains your car and flushes it where it stands, whether at a roadside, on a driveway or at a forecourt. Ring us before all else happens, and you will know what happens after that.
What to do next about petrol in a diesel
- Feed a petrol motor diesel and it will usually refuse to run at all, so the motorist stops there and so does the damage. Give a diesel petrol and the car starts, it idles, it moves off — all right for a few miles. Drivers have that reversed, which is the thing they get wrong about petrol in a diesel especially. So do not crank it. And if started, never rely on it: your fuel system is wearing down as you drive.
- Diesel combusts, and before it burns it lubricates — your high-pressure fuel pump, its injectors. Petrol does only the burning. So leave the ignition off as well: flicking it on is commonly enough to prime the system, and priming pulls petrol from that tank into precisely those parts.
- Do not thin it. Diesel put on top removes nothing, and so all you have is more of what was already there, because percentage isn't how a diesel fuel system handles petrol. Super unleaded? Just petrol. The octane makes no difference.
- A motor that has never shifted is the quickest one to handle, so remain where you are if you safely can. Stopped on the verge on Lichfield Road? Hazards on, then leave the car there. An odd spot suits us better than a started diesel.
- Check where you are before ringing. A postcode that starts B74 4, and the name of whatever is next to you. Otherwise the technician circles instead of arriving.
- Dial 0333 366 0103. Expect three queries — what got in, roughly how many litres, plus if the motor has been turned over. Your replies shape whatever comes after.
Quarter past eight, a hurried top-up on the way in, and it dawns on you close to eleven — by then your diesel Skoda Octavia has been standing at Blake Street for three hours. Ring us and keep the vehicle just where it is. The drive in is the part that counts now, since diesel does two tasks on its way through a motor: it combusts, and before it combusts it lubricates its injection pump and those injectors. Petrol handles the first and not the second. So those few miles were travelled with your pump labouring on a fluid that had given up most of the protection it is designed around — which is why the thing we ask is how far you travelled, not how long your vehicle has been stood.
Here's what a job in the car park by The Quill & Taper normally looks like. Our engineers arrive at the vehicle, ask what got in, about how much, and whether your engine has run since — these three answers determine much of the work. Then the tainted mixture comes out of your tank, the lines get rinsed, and the filter comes off where your BMW 1 Series has a serviceable one. Fresh diesel goes in and the fuel system is primed. Then our technicians fire it up, make sure it runs properly, and you set off.
Do not drive it home to buy yourself time. You already have it: nothing gets worse while the car sits, because a diesel Ford Kuga parked outside Hill Hook Local Nature Reserve is doing none of what it did on the way there. The pump has stopped turning.
The pump waits upstream of the injectors, so whatever a worn-out one gives off travels on with your fuel — which is why we're blunt about not driving on. Call us, then leave your diesel Vauxhall Insignia where it's close to Sacred Heart Catholic Church.
Petrol in a diesel does its harm as a proportion, which is the reason we ask at all: the same few litres sitting in a nearly empty tank make a far stronger blend than they would in a full one. And petrol is rated on how well it resists igniting under pressure — the opposite of what a diesel wants — so a stronger mix rattles more, smokes more, goes flatter. None of which means you need an answer prepared. Almost nobody knows how full your tank was in a vehicle collected two days ago, and our engineers work that out there. Do phone the hire or company firm first, though: some agreements want them to approve the work, and that's far faster settled before than after. Then ring us about the Volvo XC60 near All Saints Church Centre.
Forecourt drains for petrol in a diesel
A large part of this work is finished at the pump, because that's where it often kicks off. Still at Shell? Then that's usually where it happens. Garage forecourts are everyday for us, with the agreement of the station.
Nowhere else but a forecourt can the mistake be caught with your motor still untouched. Fuel drawn out of the tank and through the filter, right to the high-pressure fuel pump, is what occurs when the engine is started and your car is driven to where it is now: the car park, the private drive or the lay-by, anywhere other than the forecourt. So the flush covers your filter and your lines along with that tank. That's still not a catastrophe, and we sort it out where the vehicle is. What determines it is whether the ignition was turned in the seconds after your receipt was checked.
Clear of the petrol pump, the next customer can get past — so yes, let the attendants help you move the vehicle. Well worth it. Shifting it four bays does not warrant starting the engine.
Coverage in Hill
The same journeys take us to Watford Gap, Hill Hook, Four Oaks, Mere Green and Hill Wood besides Hill, which is a residential suburb.
Not on the list? That means nothing. The places above are simply the closest few, and nearly all towns across West Midlands have a page of their own elsewhere on our site. Call us to enquire instead of presuming, above all where you are on a boundary or anywhere your phone can't find.
The map shows the patch the page covers. We operate at the roadside, at forecourts, on driveways and at car parks throughout all of that, and the car does not need to come to us.
Broken down by the kerbside near Hill
Not everybody finds a sensible place to pull over. Hazards flashing at a lay-by somewhere, or pulled onto the verge beside Hill Village Road since you worked it out after setting off — our engineers take that call so often that it is the ordinary kind.
Clear of the car when it is not wise to be in it, by it if it is. It will frequently oblige. A diesel running on petrol limps along very willingly, and that's the trouble: fire it up to get to somewhere safer and that mix goes further into the system with every mile travelled. However awkward the place, it's no problem for us to get to it, and that's far better for the car than pressing on.
A couple of miles on petrol in a diesel: what next?
This is where the M6 Toll comes in, under 3 miles away from Hill. Lost power, a rough idle, smoke: those are the symptoms when they arrive, instead of a tidy stop — and a misfuelled diesel will usually get you onto it and some way along before anything feels wrong at all.
The next sensible exit is the one to take. Turn off there, and leave the restarting alone. Assume the worst of it on a long trip. Anything near the under 10 miles to the nearest city, and the mixture has been through the filter, through your pump, through the injectors. Say so when you ring. What our technicians bring changes.
Hill itself
Hill is a suburban area in the West Midlands, situated approximately 5.8 miles from Lichfield and around 104.8 miles northwest of London. Hill sits at an elevation of 150 metres, characterised by detached housing and a relatively small population of around 4656 residents. Hill is near several other local places, including Watford Gap, Hill Hook, and Four Oaks, in the gently rolling inland landscape of the region.
What happens when our engineers get to you in Hill
- Three things get checked before any quote — the fuel that went in, the quantity, and whether anything has been run since. Each answer changes the work.
- Our technicians drain your tank of the polluted mixture.
- We rinse your fuel lines and clean your filter, and so what is remaining in the fuel system is not what started the problem.
- Priming follows, once fresh diesel is in.
- Our engineers turn it on and make sure it runs correctly on new diesel.
From that point, you're ready to drive away. All of it is done where your car is, so it never needs to be taken to a garage, and when it has been spotted quickly, lasting damage is very uncommon.
AdBlue in a diesel tank around Hill is a separate problem
If what went in was AdBlue rather than petrol, the opening rule is unchanged — do not crank it — but the fault isn't. The lubrication a fuel system depends on gets stripped away by petrol, which weakens the diesel. Urea dissolved in water, AdBlue, and in a diesel tank that causes corrosion and build-up.
AdBlue removal in Hill has a page of its own with the detail on it, including why it's frequently the more significant of the two. Our technicians deal with both.
How much is a petrol-in-diesel fuel drain in Hill?
Truthfully, no single figure belongs on a page like this. This job changes. Here's what changes it:
- Has it been started or driven? Nothing else counts for as much.
- How much of the wrong fuel got in, compared with how much that tank holds.
- Whether it was unleaded or AdBlue.
- Access: the vehicle's position, and if working on it there's safe for our van.
A firm answer instead of a range is what you get for telling us three things: the vehicle, the quantity, and if it has run. If it is not urgent — the car is at home and going nowhere — works too.
Petrol in diesel: everyday questions in Hill
Fuel drains on a Hill petrol station forecourt
Yes, and it's where a large part of this work takes place. Our engineers attend Esso and the other forecourts nearby all the time, with the station's permission — tell us which one you are at when you ring and we will tell you whether our engineers can work there.
Is there a sensible amount of petrol in a diesel?
Whether the engine has run counts much more, though the ratio counts too, rather than the litres. 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 mixture been pulled right through, or has it not?
Already driven it with petrol in the diesel? What now?
Switch off somewhere sensible, and keep it that way after you stop. Driving shifts the issue along — out of your tank, into the pump and injectors. People fear it a good deal more than the recovery rate warrants, mind. The one genuinely helpful thing left to you is not restarting the car.
Fuel drains and manufacturer warranties
A drain then flush carried out properly is not a change and doesn't invalidate a manufacturer's warranty. Running a diesel on petrol is the thing more likely to cause a dispute with one, which is another reason to leave the vehicle turned off.
Can I just add two-stroke oil and drive home?
No. It belongs to a different problem from a bygone era, and petrol has weakened something no oil of that kind restores. Your pump still has to live with it, since your tank still has petrol in it afterwards.
A main dealer for petrol in a diesel — needed?
You do not need one. The car is drained and cleaned wherever it is, with no need to take it to a franchised dealer.
Still with the vehicle?
Leave the engine turned off.
Driven it already? Then somewhere safe, stop, switch off, and no restarting the vehicle afterwards. Cold, parked, going nowhere: that's the best place to be in. People fear this far more than they need to.
Mobile fuel draining around Hill and throughout West Midlands — at the kerbside, on the forecourt or at home.