Burmantofts: Petrol in a Diesel Car? How Worried to Be
Less than you probably are, if it hasn't been started. Everyone in Burmantofts starts with "have I ruined it?", and the honest answer is generally no: petrol resting inside that tank of a diesel remains harmless till priming, cranking or driving draws it into your fuel system. Keep it like that: leave the motor off then call Petrol in Diesel. The remainder of this page covers what petrol actually does to a diesel, how to tell how far it has got, and how to make sure it doesn't happen to you a second time.
Inside the motor: what petrol in a diesel does
Two jobs fall to diesel on its route through a motor. It burns, and before it burns it lubricates. Extremely fine clearances are built into the injectors and the high-pressure pump, and just your diesel running through stops those surfaces grinding together.
The second task petrol does not do at all, and the first it does badly. It is thinner than diesel and strips away the lubrication your fuel system rests on, and so a pump running on a petrol blend is a pump wearing itself. And petrol is designed to resist igniting under compression, which is the opposite of what a diesel needs from its fuel. That is where the clattering comes from.
Together, those make the shape of the issue clear. The harm is done by circulation, not by contact. All a tank with petrol in it amounts to is a fuel issue. Whatever a worn pump sheds travels on, borne by the fuel, into the fuel injectors downstream, which is why a pump that has been working on the petrol is where a mechanical issue begins.
Petrol in a diesel in Burmantofts: how serious is it? Four situations
Fuelled, and not started: no case is better. The petrol is in your tank and only the tank, and the task is a drain and a flush where your car stands. This is the one situation that can only really happen on a forecourt, since anywhere else the vehicle has been driven to get there.
Ignition on, or started for a second. Petrol has come out of your tank and got to the fuel filter and your lines, since your system has been bled. That's normally still a simple job — a drain, a flush, and the fuel filter dealt with.
Those few miles driven meant your pump running on fuel thinned by petrol the whole way. How hard the vehicle was driven counts as much as how far, and this work takes in that tank, your lines, your filter and clean fuel through the whole circuit. Short trips, like the school run to Ebor Gardens Primary Academy, are one matter. Any distance on the Inner Ring Road, under a mile from Burmantofts, means the motor has worked hard throughout, and a run to Leeds, under 3 miles away, makes a very different job as well.
It complained, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone lumpy. The fuel isn't acting like diesel any more, and the motor is saying so. Stop where you are — on the verge on Shakespeare Gardens, at the kerb, down a side road — and do not move it. What goes first is still the fuel drain and flush-through, and that takes care of it, with lasting damage very rare when a car is pulled over quickly.
Petrol in a diesel stories Burmantofts motorists hear
Myth: topping up to full with diesel makes it fine. It does not. Nothing is removed when you top up — your tank simply holds more of the same blend. A diesel fuel system doesn't accept petrol by percentage in the way that advice assumes.
"Modern diesels can handle a little petrol" — a myth, and nearer the reverse. At higher pressure, through smaller components: that's how a current diesel moves its fuel, and so the lubrication counts more, not less.
Myth: "If it starts and drives, there is no damage done." This is the one that catches drivers. The motorist of a petrol engine fed diesel normally has no choice but to stop, because it will not run, and the damage stops with them. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, which it usually does; meanwhile your pump grinds. A running engine doesn't mean fine.
"A drop of two-stroke oil and drive it home" — a myth, taken from a fix from years ago, for a distinct issue. What petrol has thinned remains diluted, and the petrol remains inside that tank anyway.
The next start sends petrol back round your pump from the fuel lines and the filter, where some of that sits after your engine has run. That's why a DIY tank drain does not sort it — a myth. It is also genuinely dangerous to drain petrol into a can at the roadside.
How does petrol in a diesel occur?
Carelessness is seldom the cause, and nobody means to do it. One way only, since of the nozzles: the smaller petrol one slips inside a diesel filler with almost no resistance, whereas the diesel one generally won't fit a petrol motor. That's how the forecourt makes it easy.
It takes place when routine and the car stop matching. A new motor, a hire car or a courtesy car. Two cars on one driveway, one petrol, one diesel. A forecourt you know, only with its pumps arranged differently. A train to catch, and a hurried fill en route to Leeds. Exactly the moment it occurs: after years of driving petrol, a driver fills a diesel Volkswagen Passat for the first time. With rain, a call arriving, or a car full of children to deal with, your hand simply does what it has always done.
Burmantofts motorists: how to prevent petrol in a diesel next time
- The label is what matters, and so check the petrol pump instead of the colour: in the UK unleaded handles are normally green and diesel black, yet not on every forecourt.
- Inspect your filler flap. Plenty of motors state the fuel type inside the flap or on the cap. Look at it on the first fill in any vehicle you don't know.
- One of each in the home? Mark the key to your diesel — a coloured fob, a sticker — because meaning to remember isn't enough.
- Before the nozzle comes off the petrol pump the first time you fuel a hired or new motor, say "diesel" aloud. Daft, yes, but it works.
- Put your phone away. This is an easy mistake to make whilst you're thinking about something else.
- A misfuel inhibitor helps, up to a point. Some diesels have a filler designed to reject a petrol nozzle, and add-on devices exist for motors without one. They are a safety net, not a reason to stop checking the petrol pump.
- Less petrol makes a thinner blend, and so stop the moment you realise — though remembering that the next stage is unchanged. It is still not to crank it.
Already put petrol in a diesel in Burmantofts?
The order of things is short, then. Leave it unstarted, with the ignition switched off too. Ask the attendants to help you push it away from the pump if you're still on the forecourt, whether that is Shell or somewhere else. What got in, roughly how much, and whether it's run: tell us that when you call 0333 366 0103.
Say so if it was AdBlue rather than petrol: it's a separate problem, with its own page for Burmantofts, since AdBlue brings corrosion and deposits rather than lost protection.
One petrol in a diesel job around Burmantofts costs more than another. Why?
Four different jobs lie behind the four scenarios above — which is why there's no fair single quote. Mostly, your cost moves with which situation you're in. Two things come after that: the petrol that went in as a share of what the tank holds, then the spot the car is in and whether our van can reach it safely.
Ahead of any quote, not after, we ask three queries: your fuel that was put in, the volume, and if it's run. That's why. The replies turn a range into a straight figure.
About Burmantofts
Burmantofts is a suburban area in West Yorkshire, situated near the River Aire and close to the city centre of Leeds. Burmantofts has a mix of housing types, but is predominantly composed of flats, and is located at an elevation of around 56 metres. Burmantofts is part of the larger Leeds urban area, with nearby places including New Town, Bank, and Harehills. Burmantofts is home to approximately 9692 residents, making it a sizable community within the city.
Across West Yorkshire and around Burmantofts: fuel drain cover
New Town, Bank and Harehills are among the spots near Burmantofts that the same teams work, answering petrol in diesel calls across Burmantofts's LS postcode area. Our engineers drain wherever the vehicle is — your own drive, a lay-by, a supermarket car park, a forecourt — so it never needs to come to us.
In Burmantofts and still at the petrol pump?
The best position there is, then — that is where you are. Switched off it remains; then phone.