--- title: Petrol in a Diesel Car Nottage — Fuel Drain canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/nottage-bridgend/ location: Nottage county: Bridgend latitude: 51.491660 longitude: -3.711570 service: Petrol in a Diesel Car updated: 2026-10-02 --- # Nottage: Put Petrol in a Diesel Car? With that tank still carrying the fuel and the motor not yet started, nearly every job takes only a drain, so leave the engine off. That result is decided in the minutes right after the fill-up, and not by the amount that was put in. Across Nottage and the rest of Bridgend, Petrol in Diesel drains the car and flushes it where it stands, whether by a roadside, on a driveway or at a forecourt. Ring us and we shall tell you what happens from here before you do anything else. ## Your next five steps: petrol in a diesel - Never crank it. Fired up regardless? Then do not believe it. Diesel in a petrol car usually cannot run, so the motorist stops and the wear ends with them. Petrol in a diesel? It starts. It ticks over. It pulls away fine, for several miles. Motorists get that backwards. It is not all right — your fuel system is wearing down every mile you do. - Two tasks, diesel: it combusts, and on the way through it keeps your high-pressure fuel pump and injectors protected. Petrol only does the one. Which is why the car's ignition is left off also — flick it on and you commonly prime that system, and that's petrol leaving the tank for exactly those parts. - Topping up removes nothing. It leaves you a fuller tank of the same mixture, because a diesel fuel system doesn't tolerate petrol by percentage as that advice suggests — so never pour diesel on top to weaken it. Type is beside the point too: super unleaded is petrol. - Stay where you are if you sensibly can. A vehicle that has not shifted is the quickest one to sort out, and we'd rather drive to a difficult location than have it started. If you're parked on the verge on Sker Walk, switch those hazards on then leave the car there. - Before you dial, gather your location. Anything nearest to you with a name on it, plus a postcode that starts CF36 3 — that is what determines whether the technician shows up or circles. - What went in, about how much, and whether your car has run — these three answers shape the full call-out. Phone 0333 366 0103 then tell us. ## Removing petrol from a diesel on the forecourt Forecourts are where the work usually begins, and where a fair portion of that finishes. Still at Esso? Then that is generally where it takes place. Garage forecourts are routine for us, with the consent of the owner. A filling station is the single setting it gets halted before your engine has fired. The few seconds between checking the receipt and going for the key determine how much needs cleaning. Anywhere other than a forecourt — a car park, a drive, a lay-by — the car was fired up and moved to get there, so fuel was sucked from the tank, through your filter and into the high-pressure fuel pump. That means your lines and the fuel filter need flushing as well as your tank. It's not a calamity, and our engineers can still sort it out where the vehicle stands. Attendants will normally chip in pushing it away from the petrol pump, which lets the next motorist get by. Welcome the assistance. Starting the car for four car lengths? No. Straightforward, these ones, and the reason is the distance: a mile at gentle throttle draws little of it. Petrol into a diesel Audi A4 somewhere around Nottage, a boot full of shopping, and you stuck outside Co-op Food — phone us. Exiting that space is not worth another start. That tank gets cleared where it stands, the fuel lines cleaned, fresh diesel in, and you drive home. ## Nottage plus the villages next to it Nottage is a residential suburb, and so our technicians go out to the town and to the villages by it on the usual journeys: Porthcawl, South Cornelly, Newton, Kenfig and North Cornelly. Our engineers do come. Those places above are only the closest neighbours, and a page exists for most locations across Bridgend, so an absence from the list isn't an absence from the coverage. Call us and check instead of presuming — county lines especially, and wherever the satnav can get wrong. See the map for the ground shown here. The car doesn't need to come to us. We operate across the lot — kerbside, forecourts, driveways, car parks. Put diesel in a petrol car and mostly it won't run, and so the person stops there and the damage stops with them. Reverse it — petrol into a diesel — and the car fires up, idles and moves off as though nothing had happened, while the high-pressure fuel pump works without the lubrication your fuel is meant to be giving. That is the catch, and it's why your diesel Mercedes C-Class will have felt entirely normal coming back from the local primary school. They do. From the driver's seat there is nothing to caution you about, and so nothing alerts you. Ring us with roughly how far you went, and how hard; the second one matters more than the first. ## Nottage: stuck where you parked The chance to pull in anywhere safe doesn't come to everyone. If you realised after setting off and ended up on the verge on Steepholm Close, or at a lay-by somewhere with your hazards going, that is a routine call for us and not a rare one. Out of the car while it's not wise to sit there, beside it when it is. Never start it up to reach a better location. It'll go — a diesel on petrol generally obliges — and each mile of obliging drags that blend deeper into your fuel system. Carrying on causes the car far more harm than our van driving out to a difficult place, and that's no bother for us. This is what a job in the car park outside The Seagull generally looks like. Our technicians get to your car, ask what was put in, roughly how much, and whether your engine has run since — those three answers settle most of the work. Then the contaminated mixture comes out of the tank, your lines get flushed, and the filter comes off where your BMW 5 Series has a replaceable one. Fresh diesel goes in and the system is primed. Then our technicians fire it up, confirm it runs properly, and you pull away. ## Driven it already? Pull over, then read below This is where the M4 comes in — under 3 miles from Nottage. A wrongly fuelled diesel will usually take you onto it and some distance along before anything seems wrong, while the symptoms when they arrive are typically a loss of power, a rough idle and smoke rather than a tidy stop. Take the first junction that's safe, pull up there, and don't restart it to reposition. It affects what we bring, and so mention it when you call: on a longer drive — anything approaching the under 15 miles to the closest city — take it the contamination has been through your filter, the pump and the injectors. ## Where is Nottage? Nottage is a coastal suburban area in Bridgend, Wales, situated near the seaside towns of Porthcawl and Newton. Nottage has a population of around 3985 people and is characterised by detached housing. Nottage is located approximately 13 miles from Swansea and 154 miles from London, with the nearby village of South Cornelly also being a notable neighbour. ## The call-out in Nottage, step by step - Three things get asked before any price — your fuel that got in, the amount, and whether anything has been run since. Each answer changes the work. - The tainted fuel comes from your tank. - Our technicians flush the fuel lines and clear the filter, and so what's left in the fuel system isn't what caused the trouble. - Our technicians pour fresh diesel in and prime your system. - The motor is turned on and tested to be sure it runs correctly on new diesel. That has your car ready to drive away. Permanent damage is very uncommon when it has been spotted quickly, and since everything is done where the car is, it never needs to be taken to a garage. ## A separate matter: AdBlue in a diesel tank in Nottage AdBlue rather than petrol? Then the first instruction is unchanged — your motor stays off — whereas this fault under it's a separate one altogether. Petrol weakens your diesel and removes the lubrication the fuel system depends on. AdBlue is urea in water, and in a diesel tank it causes rust and deposits instead. AdBlue removal around Nottage has a page of its own with the details on it, including why it's frequently the more serious of the two. Our engineers handle both. Unfamiliar places are where this happens most, and the reason is mechanical rather than sloppy: the slimmer petrol nozzle slides into a modern diesel filler neck with almost no resistance at all. Filled up by Porthcawl Library without thinking, in a diesel Ford Fiesta you have had for two days? Ring us where you are. Hire and courtesy cars often get driven further before anyone realises, and mileage is what settles how much petrol gets to the fuel injectors. ## Paying for a petrol-in-diesel drain in Nottage One price wouldn't be fair here, as this is not one job. These are the things that change it: - Has it been run or driven? Nothing else counts for as much. - Wrong fuel in, against what that tank holds — that ratio. - AdBlue or unleaded, whichever was put in. - Access: the vehicle's position, and whether working on it there's safe for a van. A clear answer instead of a range is what you get for telling us three things: your vehicle, the quantity, and whether it has run. Not urgent, with the car at home and going nowhere? Then works. A few streets, then it stopped. Throttle limp, idle lumpy, and the diesel Citroen C4 is parked up close to Griffin Park Community Centre. Your engine is not failing — that sluggishness is fuel that will not build pressure. There is no light on the dash for it, so motors like yours usually get driven a second time before somebody picks up the phone. Do not. Off, then call us. ## Nottage drivers ask us these about petrol in diesel ## At a petrol station around Nottage, can you do a fuel drain there? Yes, and it's where a fair share of this work takes place. Agreement from the site is the condition. Given that, a forecourt like Oil4Wales is somewhere we're regularly, along with the rest of them locally — so name yours on the phone and you'll hear whether working there's possible. ## A few litres of petrol in a diesel — too much? Litres are not the measure. Proportion is, and a lot more than either, it matters if anything has been run. What determines how much work is required is whether that mixture has been sucked through the fuel system — because although five litres in an almost empty tank is a different case from five in a full one, either way that's the query. ## Petrol in my diesel, and I have driven the car Stop sensibly. Off. Nothing after that. Not restarting it is the single most helpful thing available to you now. Driving does move the problem out of your tank and into the pump and injectors, yes, and it remains salvageable a lot more regularly than motorists fear. ## Is a fuel drain going to void my warranty? A drain and flush carried out correctly isn't a modification and does not void a manufacturer's warranty. Another reason to leave it turned off: running a diesel on petrol is the thing more likely to cause a disagreement with one. ## Can I just add two-stroke oil and drive home? What petrol has weakened isn't put back by two-stroke oil, which is an old fix for a different fault. So no. Your pump still has to live with it, as the tank still has petrol in it afterwards. ## A main dealer for petrol in a diesel — needed? No. Our engineers drain and clean the car wherever it is, so there's no need to take it to a franchised dealer. ## Is the car still with you? Keep the car switched off. Already driven it? Then pull in somewhere sensible, turn off, then let it remain that way. A still, cold car is the best position to be in, and this is recoverable from much more frequently than people assume. Draining misfilled cars, Nottage and the rest of Bridgend, wherever they are. Roadside. Forecourt. Home.