Petrol in a Diesel Car in Willington: How Worried Should You Be?
Likely less than you already are — as long as no one has started it. Petrol sitting in a diesel tank does nothing to your motor until something draws it through the system — the ignition priming the pump, the starter, or driving itself. So the truthful answer to the first question anyone in Willington asks, "have I ruined it?", is normally no. To keep it that way, call Petrol in Diesel then leave your engine switched off. The remainder of this page explains what petrol really does to a diesel, how to judge how far it has got, and how to make sure it does not happen to you again.
What petrol in a diesel does to your engine
Two jobs fall to diesel on its route round a motor. Before it combusts, it lubricates — and then it ignites. Built to extremely fine gaps, the injectors and the pump depend on the diesel moving through them to keep their surfaces from wearing against one another.
Poorly at the first, not at all at the second: that is petrol. Being less viscous than diesel, petrol strips out the protection a fuel system needs, leaving a pump on the blend wearing itself. It's also made to resist igniting under compression — the reverse of what a diesel needs — which is where you get the clattering.
Seen together, they show what shape the issue has. Not contact but circulation is what causes the harm. All a tank with petrol in it amounts to is a fuel problem. A pump that has been labouring on that petrol is the start of a mechanical one, and whatever a worn pump sheds moves on with the fuel to the injectors further on.
Willington, petrol in a diesel: four situations, from mild to major
Filled but not once started — as good as it gets. Being on a forecourt is what makes this possible: elsewhere, your car has been driven there to begin with. With the petrol held inside that tank alone, it's cleared and rinsed on the spot, and nothing more is needed.
Ignition on, or started for a moment. Petrol has left that tank and got to your filter and the fuel lines, because your system has been bled. Drain, flush, deal with your filter: still usually easy.
The pump has spent a couple of miles on thinned fuel — that's what driving the car does. Distance is only half of it; how hard it was driven matters equally. Either way the work includes your tank, the lines, the filter and clean fuel through the whole circuit. The school run to Willington Primary School is one matter. Getting as far as Durham, under 10 miles away, makes a very different task — as does any mileage on the A1(M), under 10 miles from Willington, with the motor running hard the whole time.
Driven on until it protested — rattling, smoke, a ragged idle, a dead throttle. The engine is telling you the fuel is no longer acting like diesel. Leave it wherever it has stopped: a lay-by, a side street, the verge on High Street. The fuel drain and flush still go first, and they deal with it: if a car is pulled over quickly, permanent damage is very rare.
What Willington motorists get told about petrol in a diesel — and the stories in it
Myth: "Fill it the rest of the way with diesel and it will be fine." It will not. Nothing is removed by topping up — you're left with a fuller tank, still the same mix. A diesel fuel system does not tolerate petrol by percentage in the way that guidance assumes.
If anything, the opposite holds. Myth: "A modern diesel can cope with a bit of petrol." A modern diesel sends its fuel through finer parts at higher pressure, which makes the protection count more, not less.
This is the one that catches motorists. Myth: "If it starts and drives, there's no harm done." The driver of a petrol engine fed diesel usually has no choice but to stop, since it will not run, and the damage stops there. Feed petrol to a diesel and it normally starts, idles and drives away as if nothing happened — all the while its pump wears. Being able to run is not the same as being fine.
An outdated fix for a separate issue lies behind this one. Myth: "Add some two-stroke oil and drive the car home." It does not put back what petrol has weakened, and that petrol is still in the tank after that.
If the motor has been run, part of that petrol is in the filter and the fuel lines, not the tank — and the next start sends it right back through your pump. So the myth "drain that tank yourself and you are sorted" does not stand up. Clearing petrol into a can at the kerbside is also truly hazardous.
How it happens: petrol in a diesel
On purpose? Never. Through carelessness? Rarely, if ever. One way only, because of the nozzles: the narrower petrol one slides inside a diesel filler with almost no resistance, while the diesel one generally won't fit a petrol vehicle. That's how the forecourt makes it easy.
When routine and your car stop matching, it takes place. Any vehicle that is new to you — hired, on loan as a courtesy car, or just bought. A household with one petrol and one diesel on the drive. A familiar forecourt with the pumps in a different order. A rushed fill on the way to Bishop Auckland with a train to catch. Years of petrol cars behind you, a diesel Volkswagen Golf in front of you at the forecourt for its first tank — that is when. With rain, a call arriving, or children to deal with, your hand just does what it always has.
Willington motorists: how to avoid petrol in a diesel next time
- A green handle for unleaded and black for diesel is usual in the UK — yet not on each forecourt. Go by the label on the pump, not the colour.
- Plenty of cars state the fuel type inside your filler flap or on the cap, so check it on the first fill in any car you don't know.
- Label your key. In a home with one of each, a coloured fob or a sticker on your diesel's key does more than any amount of intending to remember.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" out loud before you take the nozzle off the pump. It seems silly and it does the trick.
- Put the phone away. This is an easy mistake to make while you are thinking about something else.
- Add-on devices exist for motors without one, and some diesels are built with a filler that won't take a petrol nozzle. Helpful — but a backstop at best, never a reason to stop checking the label.
- Spotting it mid-fill? Stop there and then. A thinner blend results from less petrol inside that tank, but the next stage remains the same: do not start the car.
Already put petrol in a diesel in Willington?
Then, there's just a short order of things. Don't start it, and do not turn your ignition on. Yet at the forecourt, at Shell or anywhere else? Ask the staff to help you roll the car clear of the pump. Then ring 0333 366 0103 and tell us what was put in, roughly how much, and if it's run.
Corrosion and deposits form the trouble with AdBlue, whereas petrol means lost protection. So if it was AdBlue, say so — and read its own Willington page.
Why one petrol in a diesel job around Willington costs more than another
Four separate tasks lie behind the four scenarios above — which is why there's no fair single quote. What shifts the cost is chiefly which of them you are in. The ratio counts next, meaning how much of the tank is petrol, and then the location of the car and whether reaching it is safe for a van.
What was put in, how much, and if it has run — three queries our technicians ask before costing, not after, for precisely that reason. A range becomes a straight figure when those answers are in.
About Willington itself
Willington is a town situated on the River Wear in County Durham, with a population of around 6822 people. Willington sits at an elevation of 104 metres, approximately 6.4 miles from the city of Durham. Willington has a mix of housing types, but is predominantly characterised by terraced homes. Willington is located near other small settlements, including Sunnybrow, Helmington Row, and Oakenshaw.
Willington and Durham: where our fuel drain cover reaches
Sunnybrow, Helmington Row and Oakenshaw are among the locations around Willington that the same teams work, answering petrol in diesel calls across Willington's DL postcode area. The vehicle does not need to move to us: we drain at a forecourt, in a supermarket car park, in a lay-by or on your own driveway.
In Willington and still at the pump?
The best position there is, then — that is where you are. Call, and leave it turned off.