Should You Worry? Petrol in a Diesel Car in Ellicombe
Probably less than you are now — provided nobody has started the car. Until your ignition primes your pump, the starter turns, or your car is driven, petrol in a diesel tank simply waits there and does nothing. Which makes the truthful reply to that first Ellicombe query — "have I wrecked it?" — normally no. Keep it like that: leave the engine off and call Petrol in Diesel. What petrol really does to a diesel, how to gauge how far it's travelled, and how to keep it from happening a second time: that's the remainder of this page.
Inside the motor: what petrol in a diesel does
Diesel does two jobs on its way through a motor. It ignites, and before it burns it lubricates. Built to very fine tolerances, the fuel injectors and your pump depend on the diesel moving through them to stop their surfaces wearing against one another.
The second task petrol doesn't do at all, and the first it does poorly. The knocking comes from petrol being made not to ignite when compressed, which is precisely the reverse of what a diesel needs. On top of that it is thinner than diesel, it strips out the protection the fuel system hinges on, and any pump running on that mixture is wearing itself.
The shape of the issue is plain once you put those together. The damage is done by movement, not by contact. Any tank with petrol in it is a fuel fault. After your pump has been labouring on that petrol, a mechanical fault has started: anything shed by a pump that's wearing travels downstream to your injectors with the fuel.
How serious is petrol in a diesel? Four situations we see around Ellicombe
Fuelled up, not once started. The best case there can be. On a forecourt, and really only there, that petrol is still confined to the tank — because everywhere else your car was driven to reach it. The job is emptying and flushing on the spot.
Started for a second, or just the ignition on. Your system has been primed, so petrol has left the tank and reached your filter and the fuel lines. That is usually still a simple task — a drain, a flush, and the filter dealt with.
Those few miles on the road were the pump working on fuel weakened by petrol throughout. Tank, lines, filter, then clean fuel put through the whole system: that's the work, and the way the car was driven matters as much as the miles. The school run to Dunster First School is one matter. A run as far as Cardiff, under 25 miles away, is a very different job. So is any miles on the M5, under 25 miles from Ellicombe, where the engine has been running hard the whole time.
It protested, and only then stopped: smoke, rattling, a throttle gone soft, an idle gone ragged. What you are hearing is the engine signalling fuel that no longer acts like diesel. Whether it's the verge on Ellicombe Lane, a lay-by or a side road, stop there and leave it. Permanent damage is very unusual when a car is stopped quickly, and the fuel drain and flush-through that still go first deal with it.
Myths Ellicombe drivers hear about petrol in a diesel
"Top it up the rest of the way with diesel and it will be fine" — a myth. It won't. Topping up takes out nothing; it gives you a bigger tank of the same mixture. The idea behind that guidance — that diesel fuel systems accept petrol by percentage — is wrong.
Myth: a newer diesel copes with a bit of petrol. Rather, the reverse. Lubrication matters more on newer diesels, not less, since their fuel passes through smaller components at higher pressure.
The myth that catches drivers off guard: if it starts and drives, it must be unharmed. A petrol motor fed diesel normally will not run, and so the motorist stops and the damage stops with them. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, as it usually does; meanwhile the pump wears. Running isn't the same as fine.
"A drop of two-stroke oil and drive it home" — a myth, taken from a fix from years ago, for a separate fault. It does not put back what petrol has weakened, and that petrol is still in your tank later.
"Drain it yourself and you are sorted" — a myth, since after it's been running some petrol sits in the filter and lines, waiting to go right back through your pump on your next start. And, a can of petrol filled at the kerbside is truly risky.
Why petrol in a diesel happens at all
Carelessness is seldom the cause, and no one means to do it. One way only, since of the nozzles: the slimmer petrol one slides inside a diesel filler with almost no resistance, while the diesel one generally won't fit a petrol vehicle. That is how the forecourt makes it straightforward.
Routine and the car falling out of step is when it takes place. A new vehicle, a hire car or a courtesy car. A household with one petrol and one diesel on the drive. A well-known forecourt with the pumps in a different order. A train to catch, and a hurried fill en route to the nearest station. Years of petrol motors behind you, a diesel Volkswagen Golf in front of you at the forecourt for its first tank — that is when. Your hand repeats what it has always done once you add rain, a phone call or a back seat full of kids.
How to prevent petrol in a diesel at your next fill-up around Ellicombe
- The label is what matters, and so check the pump rather than the colour: in the UK unleaded handles are usually green and diesel black, but not on each forecourt.
- In a motor you don't know, look inside the flap over the filler or at the cap before the first fill: many cars state the fuel type there.
- A coloured fob or a sticker on the diesel's key does more than any amount of intending to remember, for a house with one of each.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" aloud before you lift the nozzle off the petrol pump. It sounds silly and it works.
- While you are thinking about something else, this is an easy mistake to make — so tuck the phone away.
- Up to a point, a misfuel inhibitor helps: some diesels come with a filler built to refuse a petrol nozzle, and add-on devices exist for the rest. Treat it as a safety net, and keep checking the petrol pump.
- Noticing it mid-fill? Stop at once. A weaker blend follows from less petrol inside that tank, yet your next step remains the same: do not crank it.
Put petrol in a diesel in Ellicombe already?
Short and simple, then, is the order of things. Leave it unstarted, with your ignition switched off as well. If you are still on the forecourt — Tesco or anywhere else — ask the staff to help you push the car clear of the pump. Phone 0333 366 0103 next, with three facts — your fuel, the approximate amount, and if it has run.
AdBlue, not petrol? Then tell us. Corrosion and deposits, not lost lubrication, make it a separate problem — Ellicombe has a page all for it.
Ellicombe petrol in a diesel jobs: why one costs more than another
Four separate tasks sit behind the four scenarios above — which is why there is no fair single quote. The situation itself does most of the work of moving the cost. After that it's the ratio — how much petrol went in against how much the tank takes — and after that where the vehicle is and whether our van can reach it safely.
Three queries come first, before quoting, instead of after — what was put in, how much, has it run — and that is the reason. A range becomes a straight figure when the replies are in.
About Ellicombe and where it is
Ellicombe is a small coastal hamlet in Somerset, situated near the towns of Dunster and Alcombe, with a mix of detached housing and rural landscapes. Ellicombe sits at an elevation of 41 metres, overlooking the surrounding countryside and the Bristol Channel. Ellicombe is located near the village of Marsh Street and is approximately 23 miles from Cardiff. Ellicombe has a population of around 569 residents, living in predominantly detached homes.
Fuel drain cover across Somerset, Ellicombe included
Ellicombe sits in the TA postcode area, and the vans that answer petrol in diesel calls there work the places near it as well — Alcombe, Dunster and Marsh Street among them. You need not bring the car to us. Forecourts, supermarket car parks, lay-bys and your own drive are all spots we drain.
Ellicombe: still at the petrol pump?
Then, you could not be in a better spot. Turned off it stays; then ring.