--- title: Petrol in a Diesel Car Ashington — Explained canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/ashington-west-sussex/ location: Ashington county: West Sussex latitude: 50.933250 longitude: -0.390020 service: Petrol in a Diesel Car updated: 2026-10-18 --- # How Worried Should You Be? Petrol in a Diesel Car in Ashington Far less than you likely are, provided it has not been started. Petrol resting in a diesel tank does nothing to your motor until something pulls it through your fuel system — your ignition priming the pump, your starter, or the drive on its own. So the truthful answer to the first question everyone around Ashington asks, "have I wrecked it?", is normally no. Petrol in Diesel is who to phone, with your motor left off, and so it stays that way. The rest of this page sets out 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. ## What petrol in a diesel does to the motor Two tasks fall to diesel on its route round a motor. It protects first, and after that does it burn. Extremely fine tolerances go into your injectors and your high-pressure pump, and just your diesel flowing through keeps their surfaces from grinding together. Petrol handles the first task badly and the second not at all. A pump running on a petrol mixture is wearing itself out, because petrol is runnier than diesel and strips out the protection your fuel system depends on. Petrol is also designed to resist igniting under compression — the reverse of what a diesel wants from its fuel — and that's where the clattering comes. The shape of the issue is clear once you put those together. Not contact but movement is what causes the damage. Where that petrol is only inside your tank, it's a fault of fuel, nothing more. Once the pump has been labouring on that petrol, a mechanical fault has begun: anything shed by a pump that is grinding travels onward to the injectors with the fuel. ## Ashington, petrol in a diesel: four cases, from mild to major Fuelled up, not once started. The best case there is. At a forecourt, and truly only there, that petrol is still limited to that tank — because everywhere else the vehicle was driven to get to it. The task is emptying and cleaning on the spot. A brief spell of running, or merely the ignition on. Petrol has come out of the tank and got to the fuel filter and the fuel lines, because the system has been bled. Drain, flush, see to your filter: still usually simple. Your pump has spent a few miles on weakened fuel — that is what driving the vehicle meant. The work is your tank, the fuel lines, the filter and clean fuel through the whole system, and how hard the vehicle was driven matters as much as how far. Driving the children to Ashington CofE Primary School is one kind of trip. Very different a second time: a run to Brighton and Hove, under 15 miles away, or any mileage on the M23, under 15 miles from Ashington, where the motor never stopped running hard. Driven on until it protested — clattering, smoke, an uneven idle, a soft throttle. That is the engine telling you its fuel has stopped acting like diesel. Leave it wherever it has stopped: a lay-by, a side street, the verge on Cricketers Close. The fuel drain and flush-through still go first, and they deal with it: if a vehicle is stopped early, long-term damage is very uncommon. ## Myths Ashington people hear about petrol in a diesel Myth: topping up to full with diesel makes it fine. It does not. Nothing comes out when you top up — that tank simply holds more of the same blend. A diesel fuel system does not accept petrol by percentage in the way that advice assumes. "Newer diesels can handle a little petrol" — a myth, and closer to the opposite. At higher pressure, through smaller components: that's how a modern diesel moves its fuel, and so the protection counts for more, not less. One myth that catches people out: if it starts and drives, it must be unharmed. Diesel in a petrol motor normally means a motor that won't run: the driver stops, and so does the damage. A diesel fed petrol generally starts, idles and drives away as though nothing has happened, whilst the pump grinds. Running does not mean fine. "A drop of two-stroke oil and drive it home" — a myth, borrowed from a fix from years ago, for a distinct issue. The petrol is still in that tank after that, and what it has diluted is not put back. "Drain it yourself and you're sorted" — a myth, since after it's been running some petrol sits in your filter and lines, ready to go right back through your pump on the next start. It's also genuinely risky to drain petrol into a can at the roadside. ## How does petrol in a diesel take place? On purpose? Never. Through carelessness? Seldom, if ever. The forecourt makes it simple: the petrol nozzle is the smaller of the two, and it slips into a diesel filler with almost no resistance, whilst a diesel nozzle mostly will not go into a petrol car at all. So the error runs one way. The moment habit stops matching your car is the moment it takes place. Hire cars, courtesy cars, and vehicles that are new to you. One petrol and one diesel on the driveway of the same household. A familiar forecourt with the pumps in a different order. A train to catch, and a rushed fill on the way to Pulborough. A new-to-you diesel Renault Megane, its first fuelling, and a driver accustomed to petrol: precisely when it happens. Add a back seat full of kids, a phone call or rain, and the hand takes over. ## Preventing petrol in a diesel next time you fill up in Ashington - The label is what matters, and so read the petrol pump rather than the colour: in the UK unleaded handles are normally green and diesel black, but not on every forecourt. - Many motors state the fuel inside the filler flap or on the cap, and so check it on your first fill in a car you do not know. - A coloured fob or a sticker on the diesel's key does more than any amount of meaning to remember, in a household with one of each. - "Diesel", aloud, before you pick up the nozzle — every time a new or hired car gets its first tank. It seems silly. It works. - While you're thinking about something else, this is an easy mistake to make — so tuck your phone away. - A misfuel inhibitor helps, up to a point. Some diesels come with a filler designed to refuse a petrol nozzle, and add-on devices exist for cars without one. They are a backstop, not a reason to stop reading the petrol pump. - Spotting it halfway? Stop at once. A weaker mixture results from less petrol in that tank, but the next step stays the same: do not fire it up. ## Put petrol in a diesel in Ashington already? Short and simple, then, is the order of things. Don't fire it up, and do not switch your ignition on. The staff on the forecourt — whether at BP itself or wherever you filled up — will usually help push it away from the pump if you ask. Next, 0333 366 0103. We'll ask what got in, about how much, and if it has been run. Corrosion and deposits are the trouble with AdBlue, where petrol brings lost lubrication. So if it was AdBlue, say so — and see its own Ashington page. ## Ashington petrol in a diesel jobs: why one costs more than another The four scenarios above are four separate jobs, so no single price for this would be fair. Chiefly, the cost shifts with which situation you're in. Next it is the ratio — how much petrol went in against how much that tank holds — and after that where the vehicle is and whether a technician can get to it safely. Three questions come first, before quoting, instead of after — what got in, how much, has it run — and this is the reason. A range becomes a straight figure when those answers are in. ## About Ashington, for a moment Ashington is a village in West Sussex, situated inland at an elevation of around 33 metres, and is located approximately 13 miles north of Brighton and Hove. Ashington has a population of around 1738 people and is characterised by predominantly detached housing. Ashington is close to nearby places such as Warminghurst, Hole Street, and Wiston, and is about 41 miles south of London. ## Fuel drain cover around Ashington and across West Sussex Ashington sits in the RH postcode area, and the teams that answer petrol in diesel calls there work the locations around it as well — Warminghurst, Hole Street and Wiston among them. Our technicians drain wherever the car is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it does not have to come to us. ## In Ashington and still at the petrol pump? Then you're in the best spot there can be. Turned off it stays; then phone.