--- title: Explained: Petrol in a Diesel Car Inkerman canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/inkerman-nottinghamshire/ location: Inkerman county: Nottinghamshire latitude: 53.066450 longitude: -1.302010 service: Petrol in a Diesel Car updated: 2026-10-20 --- # Should You Worry? Petrol in a Diesel Car in Inkerman Probably less than you already are — as long as nobody has started the vehicle. "Have I ruined it?" is the first thing everyone around Inkerman asks, and the honest answer is generally no, since petrol left in a diesel tank hurts nothing until it is drawn through your fuel system — by ignition priming, by the starter, or by being driven. Leave your engine off and call Petrol in Diesel — that is how you keep it like that. What petrol really does to a diesel, how to gauge how far it's travelled, and how to keep it from happening a second time: that is the rest of this page. ## Your engine and petrol in a diesel: what happens Two tasks fall to diesel on its journey round a motor. It protects first, and only then does it burn. Your high-pressure pump and your injectors are made to extremely fine tolerances, and your diesel passing through them is what keeps those surfaces from wearing down against one another. The second job petrol does not do at all, and the first it does badly. Being less viscous than diesel, petrol strips out the lubrication a fuel system needs, so a pump running on the blend to wear itself. It's also made to resist igniting under compression — the reverse of what a diesel needs — which is why you get the clattering. Put these together and the shape of the problem is plain. It's movement that causes the harm, not contact. A tank with petrol in it is a fuel fault. The start of a mechanical one is a pump that has been running on that petrol — and whatever a worn pump sheds moves on with the fuel to the fuel injectors downstream. ## How bad is petrol in a diesel? Four situations our engineers see around Inkerman Fuelled up, never started. The best case there can be. Being on a forecourt is what makes this the case: elsewhere, your car has been driven there to begin with. With the petrol held in your tank alone, it's drained and flushed right where it stands, and nothing more is needed. Your ignition turned on, or a short start. Petrol has left the tank and reached the filter and the fuel lines, since the fuel system has been bled. Usually little more than draining, cleaning and sorting the filter, so still simple. Those few miles driven were the pump working on fuel diluted by petrol throughout. The work is your tank, the lines, the fuel filter and clean fuel through the whole system, and how hard your car was driven matters as much as how far. Driving the kids to Selston Church of England Infant and Nursery School is one sort of trip. Any miles on the M1, under a mile from Inkerman, means the engine working hard throughout, and a run to Nottingham, under 10 miles away, is a very different job too. Driven until it complained. Knocking, an uneven idle, smoke, a throttle that has gone soft. The motor is telling you your fuel is no longer behaving like diesel. Leave it wherever it stops: a lay-by, a side street, the verge on Inkerman Road. The drain and flush still come first, and they deal with it: when a car is stopped quickly, long-term damage is very unusual. ## Inkerman motorists and the petrol in a diesel myths they hear Myth: "Fill it the rest of the way with diesel and it'll be fine." It will not. Nothing comes out when you top up — the tank simply holds more of the same blend. That guidance presumes a diesel fuel system handles petrol by percentage. It does not. Myth: "A modern diesel can cope with a bit of petrol." If anything, the opposite. At higher pressure, through smaller parts: that is how a current diesel moves its fuel, so the lubrication counts more, not less. Myth: "If it starts and drives, there's no damage done." This is the one that catches drivers. The motorist of a petrol motor fed diesel normally stops, because it will not run, and the damage stops there. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, as it usually does; meanwhile the pump grinds. Fine and running are not the same at all. "A drop of two-stroke oil and drive it home" — a myth, borrowed from a fix from years ago, for a distinct problem. What petrol has thinned remains weakened, and that petrol remains inside the tank regardless. If the motor has been run, part of the petrol is in the fuel filter and the lines, not the tank — and the next start pulls it right back through your pump. So the myth "drain the tank yourself and you're sorted" does not hold. It is also truly dangerous to drain petrol into a can at the kerbside. ## How petrol ends up: petrol in a diesel Nobody does it on purpose, and it's rarely carelessness. The forecourt makes it easy: the petrol nozzle is the narrower of the two, and it slips into a diesel filler with almost no resistance, whilst a diesel nozzle generally will not go into a petrol vehicle at all. So the error runs one way. The moment habit stops matching your car is the moment it occurs. A new car, a hire car or a courtesy car. Households running one of each, petrol and diesel. Your ordinary forecourt, its pumps suddenly in a different order. A hurried fill en route to Kirkby in Ashfield with a train to catch. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is exactly the moment it takes place. Throw in rain, a phone call or a back seat full of children, and your hand repeats what it has always done. ## Inkerman motorists: how to prevent petrol in a diesel next time - The label is what counts, so check the petrol pump instead of the colour: in the UK unleaded handles are normally green and diesel black, but not on every forecourt. - Check your filler flap. Plenty of motors state the fuel type inside the flap or on the cap. Look at it on your first fill in any vehicle you don't know. - A coloured fob or a sticker on the diesel's key achieves more than any amount of meaning to remember, for a household with one of each. - Say it before you lift it. On the 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 works. - Thinking about something else is when this becomes an easy mistake to make, so tuck the phone away then keep your mind on the pump. - A misfuel inhibitor helps, up to a point. Some diesels have a filler built to block a petrol nozzle, and add-on devices are available for cars without one. They are a safety net, not a reason to stop reading the petrol pump. - As soon as you notice, stop: less petrol inside your tank makes a thinner mixture. What to do next does not change, though — still do not start the car. ## Inkerman: already put petrol in a diesel? Short and simple, then, is the order of things. Don't switch your ignition on, and do not start it. If you are still at the forecourt — the nearest petrol station or anywhere else — ask the attendants to help you roll it clear of the pump. Next, 0333 366 0103. We'll ask what went in, roughly how much, and if it has been run. If it was AdBlue instead of petrol, say so. That is a separate problem — corrosion and deposits and not lost lubrication — and it has its own page for Inkerman. ## What makes one Inkerman petrol in a diesel task cost more than the next A fair single quote does not exist here: four situations, four separate tasks. Mostly, the cost shifts with which situation you're in. Beyond that it is the ratio — how much petrol got in against how much your tank takes — and then where your car is and whether our van can reach it safely. Ahead of any quote, not after, we ask three questions: the fuel that got in, the volume, and if it has run. That is why. Those replies change a range into a straight figure. ## About Inkerman Inkerman is a suburban area in Nottinghamshire, situated approximately 9.9 miles from Nottingham and 118.6 miles from London. Inkerman sits at an elevation of 124 metres, surrounded by other nearby places such as Alma, Hanstubbin, and Allens Green. Inkerman is characterised by its predominantly semi-detached housing stock, reflecting the typical residential development of the East Midlands region. Inkerman remains a relatively small community, with a population of around 1707 residents. ## Fuel drain cover across Nottinghamshire, Inkerman included Alma, Hanstubbin and Allens Green are among the spots around Inkerman that the same vans work, answering petrol in diesel jobs across Inkerman's NG postcode area. A forecourt, a supermarket car park, a lay-by or your own driveway are all locations our technicians drain, and the car doesn't need to move to us. ## Still at the pump in Inkerman? Nothing beats it: that is where you are. Leave it turned off, and ring.