--- title: Upton Grey: Petrol in a Diesel Car? Next Steps canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/upton-grey-hampshire/ location: Upton Grey county: Hampshire latitude: 51.231690 longitude: -1.003400 service: Petrol in a Diesel Car updated: 2026-10-14 --- # Petrol in a Diesel Car in Upton Grey: What Happens Now Stop. Motor off. Leave it like that — no moment on, no moving it at all. Has not been run? Then petrol in a diesel tends to be a simple drain-and-flush job wherever your vehicle has stopped — and nothing decides that as much as the next few minutes do. What follows is the sequence from this point, anywhere around Upton Grey you happen to be. ## Petrol in a diesel, motor off — the first minute Work through the following before anything else, in this sequence. - Take your keys out. Even your ignition by itself can prime the fuel system, drawing petrol out of the tank to exactly the parts it harms, and so leave the car off wholly. - Do not top it up with diesel. Adding diesel removes nothing. You end up with a fuller tank of the same mix. - Make your car easy to see before anything else — hazard lights on — if there's traffic going past anywhere near you. - The attendants will generally help you push it away from the petrol pump. Let them, and roll it by hand — never under your engine, even for a couple of yards. - Hold on to the receipt. It says which fuel was put in and roughly how much, which is the first thing we'll ask. Still driving when you noticed? Come off the M3 at the next exit if that is where you are, under 3 miles from Upton Grey, and pull over somewhere safe and not pressing on to the services. Then begin at stage one. ## The fork in every Upton Grey fuel drain: has it run yet? From this stage on, everything comes down to a single answer. Not run, not even once: - No place but your tank: that's where that petrol still is. - Normally it is drained and flushed right where the vehicle stands. - No spot is better, and it is why the first stage counts so much. If your engine has run, even briefly: - Some petrol has left that tank by now, gone through your filter, and got into the fuel lines. - A bigger run takes it right through to your high-pressure pump and the fuel injectors. - Lines flushed, your filter seen to, and sometimes more: the job expands as the miles does. That line falls there because diesel protects the high-pressure pump and the fuel injectors on its way through them — and petrol does not. In your tank, left alone, petrol does no harm. Pump the petrol, though, and it grinds down the very parts doing the moving. ## Upton Grey, petrol in a diesel: have these prepared before you call Prepare a little, and the technician finds you instead of circling. - RG25 2 and the remainder of the postcode makes the best way to start telling us where you are. - The street or the car park. A road name helps — Greywell Road, or wherever you have stopped. - Or the nearest landmark. A car park is easier to find by what it serves, such as the one outside Co-op Food. - The car. Make, model, plus that it is a diesel. - Petrol or AdBlue? Tell us which. They are separate jobs, and AdBlue has a separate Upton Grey page. - How much. Litres from your receipt, or how long the nozzle was in. - If it has run, how far and how heavily — as well as if it's run at all. - Settle who has your car before our engineers arrive: some hire and company contracts want the owner to authorise this work, and doing it faster beforehand. Next, 0333 366 0103. Not pressing, the car left at home with nowhere to be? Then works as well. ## Waiting for a fuel drain in Upton Grey: what to do In the wait, the damage comes from kindly meant help — so these count. - Where your car has stopped settles where you wait. Exposed: away from it, away from the traffic. Safe: with it. Either way, safety before your car. - Not to roll it a couple of yards, not to check it is all right, not for a passer-by's favour: nobody starts it. - Additives stay in your boot. Injector cleaner and two-stroke oil draw none of that petrol out again. - Siphoning petrol into a can at the roadside is hazardous — and it also leaves whatever fuel has already gone beyond the tank. Don't drain it yourself. - Leave the ignition off — your windows and your radio included. ## The fuel drain, step by step, after our van arrives - The quote comes after three questions, not before them — what got in, how much, and if it's run — because those replies decide this job. - Out of that tank comes the tainted mixture: your tank is drained. - The lines are purged. If it ran, the petrol has moved beyond that tank, and the lines are holding it. - Where the vehicle has a workable filter, it is changed; otherwise, cleared. - Clean diesel in, and the fuel system primed. - Starting it. Once the fuel system is bled with clean diesel, our engineers fire it up and check it runs smoothly. Only once it's running on clean diesel do we head off. Your car returns to normal driving straight away, and permanent damage is very uncommon if it has been spotted quickly. ## Upton Grey, after the fuel drain: back on the road - Started on clean diesel, it asks nothing unusual of you. Just drive normally. - Pull over and call us back if anything looks wrong early on — a light on the dash, smoke from your exhaust, an idle that is lumpy, or a throttle with a dead spot. - An insurer, a fleet manager or a hire company may ask what was carried out, and so hold on to your paperwork. - Next time, check the petrol pump. The label, not the colour of the handle. ## About Upton Grey and where it is Upton Grey is a small village in Hampshire, situated in the South East of England, with a population of around 516 people. Upton Grey sits in a rural area at an elevation of 126 metres, approximately 17.8 miles from Winchester and 42.3 miles from London. Upton Grey is characterized by its predominantly detached housing stock, with nearby villages including Little Hoddington, Bidden, and Tunworth. ## Fuel drains round Upton Grey and beyond Petrol in diesel call-outs in Upton Grey and in Little Hoddington, Bidden or Tunworth all go to the same teams, which cover most of Hampshire as well. If you're near a boundary or somewhere hard to describe, ring and ask instead of guessing. ## Petrol in a diesel anywhere around Hampshire? Off, then ring Stage one is all of it: engine off, keys out, receipt in your pocket. From there Petrol in Diesel carries on, at the forecourt, by the roadside or on your driveway.