--- title: Next Steps: Petrol in a Diesel Car Selsmore canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/selsmore-hampshire/ location: Selsmore county: Hampshire latitude: 50.786590 longitude: -0.957900 service: Petrol in a Diesel Car updated: 2026-10-02 --- # Selsmore: Petrol in a Diesel Car? Here Is What Happens Stop. Engine off. Leave the car like that — no second on, no shifting it anywhere. Petrol in a diesel that has not been run is generally a drain plus a flush, done where the car stands, and what you do in the next few minutes determines that far more than anything else. From here on, step by step, wherever you are around Selsmore: ## Minute one: petrol in a diesel, engine off Work through these first, in this sequence. - Pull your keys out. Even your ignition by itself can prime the system, pulling petrol out of the tank to exactly the parts it harms, so keep the vehicle alone completely. - Topping up with diesel seems like it dilutes the trouble. It does not: nothing gets out, and that tank just carries more of the same. - Near passing traffic? Then your hazards come on before anything else, so your car is simple to see. - Off the pump by hand. At a forecourt, ask the staff to help you push it away from the pump. Do not crank it to shift it, however short the way. - Keep the till receipt: the grade and the rough amount are written on it, and they're what our engineers ask for first. Still driving when you noticed? Come off the Waterlooville Bypass at the next junction if that is where you are, under 5 miles from Selsmore, and pull over somewhere sensible rather than pressing on to the services. Then start at step one. ## Selsmore fuel drain: has the engine run yet, or not? Everything after this point depends on one answer. If it has not once been started: - Only the tank has petrol in it for now. - Where the vehicle sits is normally where the work is done: a drain, then a flush. - No place is better, and it is why the first stage counts so much. If your motor has been run, even for a moment: - From your tank, through your filter, into the fuel lines: that is how far the petrol has travelled. - A bigger run takes it right through to the high-pressure pump and the injectors. - Flushing your lines, the fuel filter dealt with, occasionally more: the job expands as the distance does. Diesel keeps your high-pressure pump and your injectors protected as it runs through them. Petrol offers them nothing, and that is why the line is drawn there. A tank of petrol, left still, hurts nothing. Move the petrol, though, and it grinds down the very parts doing the moving. ## What to have ready when you call about petrol in a diesel from Selsmore A technician that circles versus a van that finds you: a little preparation is the difference. - PO11 9 and the remainder of the postcode makes the best way to begin telling us where you are. - Name the road — Burdale Drive or wherever you have pulled up — or the car park. - Car parks are found most easily by what they serve: tell us the one outside Co-op Food, and it is straightforward. - Tell us what the car is — make, model — and check it is diesel. - Say which was put in — petrol or AdBlue — because AdBlue is a different job, with a page of its own for Selsmore. - The amount: the receipt's litres, or otherwise how long you held the nozzle in. - If it's run, how far and how hard — as well as whether it has run at all. - Whose vehicle it is. Some hire and company agreements want the owner to authorise the work, and that is easier settled before we turn up than after. Call 0333 366 0103 once you've got that ready — or, if your car is at home, going nowhere, use . ## Whilst you wait for a fuel drain around Selsmore Help, however well meant, is what does the damage whilst you wait. So stick to these. - Your safety comes before the car. Somewhere exposed? Get clear of the traffic then wait away from it. Safe where it is? Wait with it. - A kind passer-by does not fire it up. Nor does anybody wanting to check it still works, or rolling it a few yards. - None of it gets the petrol back out — not two-stroke oil, not injector cleaner, not something from the boot. So no additives. - Siphoning petrol into a can at the kerbside is risky — and it still leaves whatever fuel has already gone beyond that tank. Don't drain the car yourself. - Ignition stays off. Even for the radio or the windows. ## The fuel drain, step by step, after the van gets there - Three questions. What was put in, how much, and if it has run. Those replies shape this job, which is why our price comes after them but not before. - Then the tank is drained, so the polluted fuel is taken out. - If it ran, the fuel lines are holding petrol that has shifted beyond that tank — so they're cleaned. - Then the filter: changed where there's a workable one, cleared where there's not. - Fresh diesel goes in, and your system is primed. - The first start on new diesel. Once priming is finished, the motor is fired up and we confirm that it runs smoothly. Until it runs on new diesel, our engineers remain with it. It's very unusual for a vehicle caught soon to be left with long-term damage, and normal driving resumes right away. ## Selsmore, after your fuel drain: back on the road - Started on new diesel, it needs nothing special of you. Just drive normally. - Watch the first miles. A warning light, smoke, a lumpy idle or a flat spot under the throttle means pull over then call us back. - Your documents covers the question a rental company, fleet manager or insurer may ask: what work was carried out. File it. - The handle's colour isn't the thing to go by next time — the label on the pump is. ## About Selsmore Selsmore is a coastal suburban area in Hampshire, situated near the city of Portsmouth and close to the neighbouring communities of Eastoke and Mengham. Selsmore lies at a low elevation of around 5 metres, reflecting its proximity to the sea. Selsmore is characterized by its predominantly detached housing stock, which is typical of many suburban areas in the South East of England. ## Fuel drains across Selsmore and nearby Most of Hampshire has the same vans as Selsmore for petrol in diesel jobs, Eastoke, Mengham and South Hayling among them. Guessing doesn't help near a border or somewhere hard to explain; a quick ring and a question will. ## Petrol in a diesel anywhere around Hampshire? Off, then ring Step one is the whole of that: engine off, keys out, receipt in your pocket. From there Petrol in Diesel carries on, at the forecourt, at the roadside or on your drive.