Petrol in a Diesel Car in Greenhill: How Worried Should You Be?
Less than you probably are, if it has not been started. "Have I ruined it?" is the first question anyone in Greenhill asks, and the honest answer is usually no, since petrol left in a diesel tank hurts nothing till it's drawn through the fuel system — by ignition priming, by the starter, or by being driven. Keep it that way: leave the motor off and phone Petrol in Diesel. What petrol actually does to a diesel, how to gauge how far it has travelled, and how to keep it from happening a second time: that is the rest of this page.
Petrol in a diesel: what does it do to your engine?
Two jobs fall to diesel on its journey through a motor. It protects to begin with, and only then does it burn. What stops the surfaces inside the high-pressure pump and the fuel injectors from wearing against one another is the diesel passing through them — they're built to very fine gaps.
The second task petrol does not do at all, and the first it does badly. A pump working on a petrol blend is wearing itself out, because petrol is thinner than diesel and strips out the protection the fuel system depends on. Petrol is also designed to resist igniting under compression — the reverse of what a diesel wants from its fuel — and that's where the knocking comes.
Put those together and the shape of the issue is clear. It's movement that causes the harm, not contact. Petrol in the tank is a fuel issue. A pump that has been working on that petrol is the start of a mechanical one, and whatever a worn pump sheds moves on with your fuel to the fuel injectors downstream.
Greenhill, petrol in a diesel: four situations, from mild to serious
Fuelled, and never started: no case is better. Only that tank has petrol in it, so the task is draining that tank and rinsing the fuel system where the car sits. This scenario can only really happen on a forecourt: anywhere else, the vehicle got there by being driven.
A brief spell of running, or merely the ignition on. With your system primed, your lines and filter now hold petrol that has come from your tank. Still normally easy: drain, flush, and your filter seen to.
Your pump has spent a few miles on diluted fuel — that's what driving it meant. The work is your tank, the fuel lines, the filter and fresh fuel through the entire system, and how hard the car was driven matters as much as how far. Short trips, such as the school run to Hampton Primary School, are one matter. Driving as far as Canterbury, under 10 miles away, makes a very different task — as does any mileage on the M2, under 10 miles from Greenhill, with the engine labouring hard the whole time.
Driven till it protested. Clattering, a ragged idle, smoke, a throttle that has gone soft. That is your motor telling you its fuel no longer is behaving like diesel. Whether it is the verge on Poplar Drive, a lay-by or a side street, stop there and leave it. Lasting damage is very uncommon if a car is stopped early, and the fuel drain and flush-through that still come first deal with it.
What Greenhill people get told about petrol in a diesel — and the stories in it
It will not be fine. The myth: "Fill it the rest of the way with diesel and it'll be." Nothing is removed by topping up — you are left with a bigger tank, still the same mixture. Percentage is not how a diesel fuel system tolerates petrol, whatever that guidance presumes.
If anything, the opposite is true. Myth: "A current diesel can cope with a bit of petrol." Protection matters more on modern diesels, not less, since their fuel runs through finer parts at higher pressure.
"It starts, it drives, and so there is no harm" — the myth that catches most drivers than any other. Diesel in a petrol motor generally leaves a motor that won't run: the driver stops, and so does the damage. Whilst your pump grinds, a diesel fed petrol usually starts, ticks over and drives away as if nothing has happened. Fine and running are not the same at all.
Myth: a two-stroke additive makes it safe to drive home. It was an old fix, meant for another problem. None of what petrol diluted gets put back by it — and afterwards, that tank still holds the petrol.
If the engine has been run, part of the petrol sits in your filter and the fuel lines, not your tank — and your next start pulls it straight back through the pump. So the myth "drain the tank yourself and you're sorted" does not hold. Clearing petrol into a can at the roadside is also truly hazardous.
Why petrol in a diesel happens at all
A careless moment is rarely the cause, and no one means to do it. A diesel nozzle mostly won't go into a petrol car, yet the slimmer petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one error straightforward, and just in one direction.
Habit and your car falling out of step is how it happens. Hire cars, courtesy cars, and cars that are new to you. Households running one of each, petrol and diesel. A forecourt you know, but with its pumps laid out differently. A hurried fill en route to Herne Bay with a train to catch. Years of petrol vehicles behind you, a diesel Volkswagen Golf in front of you on the forecourt for its first tank — that is when. Add a back seat full of children, a phone call or rain, and the hand wins.
Greenhill people: how to avoid petrol in a diesel next time
- The label is what counts, so read the petrol pump rather than the colour: in the UK unleaded handles are normally green and diesel black, yet not on every forecourt.
- Inspect your filler flap. Many motors state the fuel inside the flap or on the cap. Look at it on the first fill in any motor you don't know.
- A coloured fob or a sticker on your diesel's key does more than any amount of intending to remember, for a home with one of each.
- It sounds daft and it works: on your first fill in a new or hired car, say "diesel" aloud before you lift the nozzle off the petrol pump.
- Thinking about something else is when this becomes an easy mistake to make, so tuck the phone away and keep your mind on the petrol pump.
- A misfuel inhibitor helps, up to a point. Some diesels have a filler built to reject a petrol nozzle, and add-on devices are available for vehicles without one. They are a safety net, not a reason to stop checking the pump.
- Less petrol makes a weaker mix, so stop as soon as you notice — while remembering that the next stage is unchanged. It's still not to fire it up.
Already put petrol in a diesel around Greenhill?
The order of things is short, then. Don't crank it, and do not switch your ignition on. If you're still at the forecourt — Texaco or anywhere else — ask the attendants to help you roll it clear of the petrol pump. Then ring 0333 366 0103 and tell us what went in, about how much, and whether it's run.
If it was AdBlue instead of petrol, say so. That is a different issue — corrosion and deposits instead of lost protection — and it has its own page for Greenhill.
Why one petrol in a diesel task around Greenhill costs more than another
The four situations above are four separate tasks, so no single price for this would be honest. What shifts the cost is chiefly which of them you are in. Beyond that it is the share — how much petrol got in against how much that tank holds — and after that where the vehicle is and whether our van can reach it safely.
Three questions come first, before any quote, instead of after — what went in, how much, has it run — and this is the reason. A range turns into a straight figure when those answers are in.
About Greenhill, briefly
Greenhill is a small village on the coast of Kent, situated near the city of Canterbury and overlooking the English Channel. Greenhill has a population of around 3239 people and is characterised by its semi-detached housing stock. Greenhill sits at a low elevation of approximately 15 metres above sea level, close to nearby places such as Hampton and Eddington. Greenhill is also within commuting distance of London, being around 54 miles from the capital.
Fuel drain cover around Greenhill and across Kent
The vans answering petrol in diesel jobs in Greenhill, in the CT postcode area, also work the spots around it, Hampton, Eddington and Studd Hill included. A forecourt, a supermarket car park, a lay-by or your own driveway are all places our technicians work, and your car doesn't need to come to us.
At the petrol pump around Greenhill, still?
The best spot there is, then — that is where you are. Phone, and keep it switched off.