Should You Worry? Petrol in a Diesel Car in Lunces Common
Not started? Then less anxious than you probably are. Everyone in Lunces Common begins with "have I ruined it?", and the honest answer is usually no: petrol left inside the tank of any diesel remains harmless until priming, cranking or driving draws it into the fuel system. Leave the engine off and call Petrol in Diesel — that is how you keep it like that. The remainder of this page covers what petrol actually does to a diesel, how to judge how far it has got, and how to make sure it does not happen to you a second time.
What petrol in a diesel does to the motor
Two tasks fall to diesel on its route round a motor. Lubricating comes before burning; it does both. Built to very fine clearances, your injectors and your pump rely on the diesel flowing through them to keep their surfaces from wearing against one another.
Petrol does the first job badly and the second not at all. Being less viscous than diesel, petrol strips away the protection a fuel system needs, leaving a pump on the mixture to wear itself. It is equally made to resist igniting under compression — the opposite of what a diesel needs — which is why you hear the clattering.
The shape of the trouble is clear when you put those together. Contact doesn't do the damage — movement does. All a tank with petrol in it amounts to is a fuel issue. After the pump has been labouring on that petrol, a mechanical problem has started: anything shed by a pump that is wearing is carried downstream to your injectors with your fuel.
Lunces Common, petrol in a diesel: four cases, from mild to major
Filled but never started — as good as it gets. Only that tank has petrol in it, so the task is clearing that tank and cleaning the fuel system where the car stands. This situation can only really take place at a forecourt: anywhere else, the vehicle got there by being driven.
Your ignition switched on, or a short start. Your system has been primed, so petrol has left the tank and got to your filter and the fuel lines. Still normally straightforward: drain, flush, and your filter sorted.
Driven a couple of miles. Now your pump has spent those miles labouring on diluted fuel. The work is your tank, your lines, your filter and clean fuel through the entire circuit, and how hard the vehicle was driven counts as much as how far. Short trips, like the school run to St Wilfrid's CofE Primary School, are one matter. Any distance on the M23, under 10 miles from Lunces Common, means the motor has worked hard throughout, and a run to Brighton and Hove, under 15 miles away, makes a very different job too.
Clattering, a lumpy idle, smoke, a throttle gone soft: driven till it complained. The fuel is not acting like diesel any more, and the engine is saying so. Leave it wherever it stops: a lay-by, a side street, the verge on Ditchling Road. A vehicle pulled over quickly very seldom has permanent damage, as the drain and the flush-through, which still go first, sort it out.
Petrol in a diesel myths Lunces Common motorists hear
It will not be fine. The myth: "Fill it the rest of the way with diesel and it will be." A bigger tank of the same mixture is all you get, since topping up takes out nothing. Percentage is not how a diesel fuel system tolerates petrol, whatever that advice supposes.
Myth: "A current diesel can cope with a bit of petrol." If anything, the reverse. At higher pressure, through more precise components: that's how a modern diesel moves its fuel, so the lubrication counts more, not less.
Myth: "If it starts and drives, there is no harm done." This is the one that catches motorists. Diesel in a petrol motor usually means a motor that will not run: the driver stops, and so does the harm. A diesel fed petrol usually starts, idles and drives away as though nothing has happened, whilst your pump grinds. Fine and running are not the same thing.
"A drop of two-stroke oil and drive it home" — a myth, borrowed from a fix from years ago, for a different problem. That petrol is still in that tank afterwards, and whatever it has weakened isn't put back.
The next start sends petrol back round your pump out of the lines and the filter, where some of that ends up after your engine has run. That is why draining your tank yourself does not leave you sorted — a myth. Besides, petrol emptied into a can by the road is truly risky.
How it happens: petrol in a diesel
Nobody does it on purpose, and it is seldom carelessness. A diesel nozzle generally will not fit a petrol vehicle, yet the narrower petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one error easy, and only in one direction.
Routine and your car getting out of step is when it takes place. Hire cars, courtesy cars, and cars that are new to you. Two motors on one drive, one petrol, one diesel. Your usual forecourt, its pumps suddenly in a different order. A train to catch, and a hurried fill en route to Wivelsfield. Years of petrol motors behind you, a diesel Volkswagen Golf in front of you at the forecourt for its first tank — that is when. Add rain, a phone call or a back seat full of kids, and the hand does what it has always done.
Avoiding petrol in a diesel next time you fill up in Lunces Common
- Check the petrol pump, not the colour. In the UK unleaded handles are generally green and diesel black, yet not on each forecourt. The label is what counts.
- Inspect your filler flap. Many vehicles state the fuel type inside the flap or on the cap. Look at it on the first fill in a vehicle you do not know.
- A coloured fob or a sticker on the diesel's key achieves more than any amount of meaning to remember, in a household with one of each.
- It sounds daft and it does the trick: on your first fill in a new or hired car, say "diesel" out loud before you take the nozzle off the pump.
- While you're thinking about something else, this is an easy mistake to make — so tuck your phone away.
- Some diesels have a filler built to block a petrol nozzle, and devices you can add are available for motors without one. Such an inhibitor helps up to a point — as a backstop, not a reason to stop reading the pump.
- Less petrol makes a thinner mix, and so stop as soon as you notice — while remembering that the next step is unchanged. It is still not to start it.
Lunces Common: already put petrol in a diesel?
Then the order of things is short. Leave it unstarted, with your ignition off too. Ask the attendants to help you push it clear of the petrol pump if you are still at the forecourt, whether that is Gulf or somewhere else. Next, 0333 366 0103. We will ask what went in, roughly how much, and if it's been run.
AdBlue, not petrol? Then say so. Corrosion and deposits, not lost lubrication, make it a different issue — Lunces Common has a page just for it.
Why one petrol in a diesel job around Lunces Common costs more than another
A fair single quote does not exist here: four scenarios, four separate tasks. Which of them you're in is chiefly what shifts the cost. Next it is the share — how much petrol got in against how much your tank takes — and after that where the car is and whether a van can reach it safely.
Before any quote, not after, come three queries: your fuel that was put in, its amount, and whether it has run. That's why. Their replies are what change a range into one firm number.
About Lunces Common
Lunces Common is a small hamlet situated on the riverside in East Sussex, with a relatively low elevation of 46 metres. Lunces Common lies near several other settlements, including Fox Hill, Wivelsfield, and Bolnore Village, and is approximately 10.9 miles from Brighton and Hove. Lunces Common is characterized by its predominantly detached housing stock, reflecting its rural setting. Lunces Common has a population of around 619 residents, according to recent estimates.
Across East Sussex and in Lunces Common: fuel drain cover
Lunces Common sits in the RH postcode area, and the teams that answer petrol in diesel call-outs there work the spots around it as well — Fox Hill, Wivelsfield and Bolnore Village among them. You need not bring the vehicle to us. Forecourts, supermarket car parks, lay-bys and your own driveway are all places we drain.
Lunces Common: still at the petrol pump?
In that case, you couldn't be in a better position. Phone, and keep it switched off.