Should You Worry? Petrol in a Diesel Car in Wingate
Unstarted? Then less worried than you probably feel. "Have I ruined it?" is the first question everyone in Wingate asks, and the honest answer is usually no, since petrol left in a diesel tank hurts nothing until it is dragged through the fuel system — by ignition priming, by the starter, or by driving. To leave the car like that, call Petrol in Diesel then leave your engine switched off. Keep reading for three things: the effect petrol has inside a diesel engine, the clues of how far it has got, and ways to make sure you don't do it again.
Your engine and petrol in a diesel: what goes on
Diesel does two jobs on its way through a motor. Lubricating comes before burning; it does both. Made to very fine tolerances, the injectors and the pump rely on the diesel flowing through them to stop their surfaces wearing against one another.
Petrol handles the first task badly and the second not at all. A pump running on a petrol mix is wearing itself out, because petrol is runnier than diesel and takes away the lubrication your fuel system relies on. Petrol is also designed to resist igniting under compression — the opposite of what a diesel needs from its fuel — and that's where the rattling comes.
Put those together and the shape of the trouble is clear. Contact doesn't do the harm — movement does. Where that petrol is only inside the tank, it is a problem of fuel, nothing more. Once the pump has been running on that petrol, a mechanical fault has started: whatever is shed by a pump that's wearing down is carried onward to your injectors with your fuel.
Petrol in a diesel around Wingate: how bad is it? Four situations
Filled up, not once started. The best case there can be. Being at a forecourt is what makes this possible: elsewhere, your car has been driven there to begin with. With that petrol held inside the tank alone, it is drained and flushed on the spot, and nothing more is needed.
Ignition on, or started for a second. Petrol has left your tank and reached the filter and the lines, because your system has been bled. Still normally straightforward: drain, flush, and the filter dealt with.
Those few miles driven meant the pump labouring on fuel thinned by petrol the whole way. Distance is only half of that; how hard it was driven counts equally. Either way the work runs to that tank, your lines, your filter and clean fuel through the entire circuit. Short trips, like the school run to St Marys Catholic Primary School, Wingate, are one matter. Any miles on the A1(M), under 10 miles from Wingate, means the engine working hard throughout, and a run to Durham, under 10 miles away, makes a very different task too.
It complained, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone ragged. What you are hearing is your engine signalling fuel that no longer behaves like diesel. Whether it's the verge on North Road, a lay-by or a side street, stop where you are and leave it. A car pulled over quickly very seldom has permanent damage, since the fuel drain and the flush-through, which still go first, take care of it.
What Wingate motorists get told about petrol in a diesel — and the myths in it
It will not be fine. The myth: "Fill it the rest of the way with diesel and it'll be." Topping up takes out nothing; it gives you a bigger tank of the same mixture. Percentage isn't how a diesel fuel system copes with petrol, whatever that advice presumes.
If anything, the opposite holds. Myth: "A modern diesel can cope with a bit of petrol." At higher pressure, through finer parts: that is how a current diesel moves its fuel, so the protection matters for more, not less.
This is the one that fools motorists. Myth: "If it starts and drives, there's no damage done." Diesel in a petrol motor usually leaves a motor that won't run: the driver stops, and so does the damage. While the pump wears, a diesel fed petrol normally starts, idles and drives away as if nothing has happened. Being able to run isn't proof of being fine.
An old workaround for a separate issue is behind this one. Myth: "Add some two-stroke oil and drive the car home." The petrol is still in your tank after that, and what it has diluted is not put back.
"Drain it yourself and you are sorted" — a myth, since after it has been running some petrol lies in the filter and lines, ready to go right back through your pump at the next start. Draining petrol into a can by the kerbside is also truly risky.
How does petrol in a diesel occur?
On purpose? Never. Through carelessness? Rarely, if ever. One way only, since of the nozzles: the narrower petrol one slides inside a diesel filler with almost no resistance, while the diesel one mostly will not fit a petrol car. That is how the forecourt makes it easy.
Habit and the vehicle getting out of step is how it occurs. A new motor, a hire car or a courtesy car. Households running one of each, petrol and diesel. A forecourt you know, but with its pumps arranged differently. A train to catch, and a rushed fill en route to Horden. A new-to-you diesel Renault Megane, its first fuelling, and a driver accustomed to petrol: exactly when it takes place. Your hand does what it has always done when you add rain, a phone call or a back seat full of kids.
Wingate drivers: how to prevent petrol in a diesel next time
- Read the petrol pump, not the colour. In the UK unleaded handles are generally green and diesel black, but not on each forecourt. The label is what counts.
- Inspect the filler flap. Many cars state the fuel inside the flap or on the cap. Look at it on the first fill in any vehicle you don't know.
- Good intentions count for less than a sticker or a fob in a bright colour on the diesel's key when a home has one of each. So label it.
- "Diesel", aloud, before you lift the nozzle — each time a new or hired car needs its first tank. It seems daft. It does the trick.
- Thinking about something else is when this becomes an easy mistake to make, so put your phone away then keep your mind on the petrol pump.
- A misfuel inhibitor helps, up to a point. Some diesels come with a filler designed to reject a petrol nozzle, and add-on devices exist for vehicles without one. They are a safety net, not a reason to stop reading the petrol pump.
- Less petrol means a thinner mixture, so stop as soon as you notice — while remembering that the next stage is unchanged. It's still not to start the car.
Already put petrol in a diesel around Wingate?
Then, there is just a short order of things. Don't turn your ignition on, and don't start it. If you are still at the forecourt — JET or anywhere else — ask the attendants to help you roll the vehicle away from the petrol pump. Then call 0333 366 0103 and tell us what was put in, about how much, and whether it has run.
AdBlue, not petrol? Then tell us. Corrosion and deposits, not lost protection, make it a separate fault — Wingate has a page just for it.
Wingate petrol in a diesel jobs: why one costs more than another
An honest single quote does not exist here: four situations, four separate jobs. The scenario itself does most of the work of moving your cost. Beyond that it is the ratio — how much petrol was put in against how much the tank takes — and then where your car is and whether a van can get to it safely.
Ahead of any quote, not after, we ask three questions: your fuel that got in, its quantity, and whether it has run. That's why. Those answers are what turn a range into one firm number.
About Wingate
Wingate is a village in County Durham, situated inland at an elevation of 131 metres, approximately 8.7 miles from the city of Durham. Wingate has a population of around 1662 people, with semi-detached housing being the predominant type. Wingate is located near other settlements such as Station Town, Castle Eden, and Deaf Hill, and is about 228.6 miles north of London.
Fuel drain cover across Durham, Wingate included
Station Town, Castle Eden and Deaf Hill are among the spots around Wingate that the same teams work, answering petrol in diesel call-outs across Wingate's TS postcode area. The vehicle does not need to come to us: our technicians drain on a forecourt, in a supermarket car park, in a lay-by or on your own drive.
Wingate: still at the pump?
Then, you couldn't be in a better place. Phone, and leave it switched off.