--- title: Smithies: Petrol in a Diesel Car? Next Steps canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/smithies-south-yorkshire/ location: Smithies county: South Yorkshire latitude: 53.570210 longitude: -1.469310 service: Petrol in a Diesel Car updated: 2026-10-02 --- # Smithies: Petrol in a Diesel Car? Here Is What Happens Not for a second, and not to move it: the engine stays off. Pause there. Petrol in a diesel that has not been run is normally a drain plus a flush, done where the car stands, and what you do in the coming few minutes settles that more than anything else. Wherever you happen to be around Smithies, this is the order things go from now. ## Engine off: minute one with petrol in a diesel First, these — in this sequence. - The ignition off, keys out. Turned on, your ignition can prime the system — and priming is what draws petrol out of your tank into the components it damages. - No diesel on top. More fuel in removes none of the petrol — it just makes you with extra of the same blend. - Hazards on. If you're anywhere close to moving traffic, make your car simple to see before you do anything else. - The staff will generally help you roll it away from the petrol pump. Ask, and roll it by hand — not on your engine, even for a few yards. - Which fuel, and about how much? Your receipt answers both, and that is where our questions start. Do not throw it away. If you were still driving when you noticed, pull over somewhere safe rather than pushing on for the services — on the M1, under 3 miles from Smithies, that means the next exit. Step one comes next. ## Has it run yet? The fork in each Smithies fuel drain Everything after this stage depends on one answer. If your motor hasn't run at all: - Nowhere but your tank: that is where that petrol yet is. - Where the car stands is normally where this work happens: a drain, then a flush. - No position is better, and it is why the first stage matters so much. Motor run, even briefly? - From your tank, through the filter, into the fuel lines: that is how far that petrol has got. - On a bigger run it has reached the high-pressure pump as well as the injectors. - Flushing the lines, your filter sorted, occasionally more: this job grows as the mileage does. That line falls there because diesel lubricates the high-pressure fuel pump and your injectors on its way through them — and petrol doesn't. Nothing is damaged by petrol that's only sitting in a tank. The components that move it are grinding the moment petrol is being pumped. ## Before you call about petrol in a diesel around Smithies: what our technicians need A van that circles versus a van that finds you: a little planning is the difference. - Where you have stopped. A postcode beginning S71 1 is the ideal start. - Wherever you have pulled up, the road's name is useful — whether that is Carlton Road or somewhere else — and so does the name of a car park. - Or the landmark. A car park is easier to find by what it serves, such as the one outside Aldi. - That it is a diesel, along with the make and model of your vehicle. - Which was put in matters: AdBlue is a separate job from petrol, plus Smithies has a page just for that. So say. - The quantity: the receipt's litres, or otherwise how long you had the nozzle in. - The miles it did, and how hard, if it ran at all. - Sort who owns your car ahead of when we turn up: some hire and company contracts want the owner to approve the work, and that is faster first. Ring 0333 366 0103 once you have got that together — or, if the vehicle is at home, going nowhere, use . ## Whilst you wait for a fuel drain in Smithies In the wait, the harm comes from well-meant help — which is why these count. - Wait with the car if it's safe where it is — but if it has stopped somewhere unsafe, you come first: away from the traffic, waiting apart from it. - Nobody starts it. Not a passer-by being helpful, not to check it is all right, not to roll the car a few yards. - Anything from the boot, oil made for two-strokes or injector cleaner: no additive removes the petrol. - No DIY clearing. Siphoning petrol into a can at the kerbside is hazardous, and it leaves the fuel that has by now gone beyond that tank. - Even your radio or your windows aren't worth switching your ignition on for. ## When our van arrives: your fuel drain, step by step - The price comes after three questions, not before them — what went in, how much, and if it has run — since the answers shape this job. - Your tank is cleared. The polluted mixture comes out of the tank. - The lines are cleaned. If it ran, that petrol has moved beyond that tank, and your lines are holding it. - Your filter is sorted. Cleared, or replaced where your car has a serviceable one. - Priming follows after clean diesel is in. - The start. With clean diesel in and the fuel system bled, it is started and checked to make sure it runs properly. Our technicians remain until it's running on clean diesel. When it has been caught early, lasting damage is very unusual, and the car goes back to normal driving right away. ## After your fuel drain: back on the road around Smithies - Drive normally. There's nothing unusual to do after it has been started on fresh fuel. - Give the first miles your attention. Smoke showing, a warning light coming on, the idle going lumpy or your throttle stumbling: pull over and ring us back. - Keep your paperwork. A hire company, a fleet manager or an insurer may ask what was done. - Next time, trust the pump's label rather than the colour of its handle. ## About Smithies, briefly Smithies is a suburban area in South Yorkshire, situated near several lakes and waterways at an elevation of around 90 metres. Smithies lies approximately 7.9 miles from Wakefield and is part of a larger network of residential communities that include Athersley South, New Lodge, and Honeywell. Smithies is characterized by its predominantly semi-detached housing stock and a population of around 4451 residents. Smithies is also relatively distant from London, at a distance of 153.3 miles. ## Fuel drains across Smithies and nearby Petrol in diesel jobs in Smithies and in Athersley South, New Lodge or Honeywell all go to the same vans, which cover most of South Yorkshire too. Somewhere tricky to describe, or close to a boundary? Asking beats guessing — ring. ## Ring, and leave the car off — petrol in a diesel in South Yorkshire Petrol in Diesel takes it from there — on your drive, by the roadside, on the forecourt — once you've done stage one: keys out, engine off, receipt in your pocket.