--- title: Next Steps: Petrol in a Diesel Car Bonnyrigg canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/bonnyrigg-midlothian/ location: Bonnyrigg county: Midlothian latitude: 55.874010 longitude: -3.107050 service: Petrol in a Diesel Car updated: 2026-10-05 --- # Bonnyrigg: Petrol in a Diesel Car? Here Is What Happens Stop. Motor off. Keep it that way — no moment on, no moving it anywhere. Petrol in a diesel that hasn't been run is typically a drain plus a flush, done right where your vehicle sits, and what you do in the coming few minutes decides that more than anything else. Anywhere you happen to be around Bonnyrigg, this is how things run from now. ## Minute one: petrol in a diesel, engine off In this sequence, and before anything else: - Bleeding the fuel system pulls petrol from the tank toward the parts it damages, and turning your ignition on can be all it takes to do that. So the keys come out, and your ignition remains off completely. - No diesel on top. More fuel in removes none of that petrol — it only leaves you with extra of the same blend. - Get the car simple to see before anything else — hazard lights on — if there is traffic going past anywhere near you. - However short the way, starting it to move it is the mistake. On a forecourt, roll the car away from the petrol pump by hand instead, and ask the attendants to help. - Keep your receipt. It shows which fuel got in and about how much, which is the first thing we'll ask. Realised on the move? Get off at the next exit if you're on the M8, under 10 miles from Bonnyrigg, and pull over somewhere safe — not at the services farther on. Step one comes after that. ## Bonnyrigg fuel drain: has the motor run yet, or not? What comes next turns on one answer, and only one. Engine never run at all? - Just your tank has petrol in it for now. - The job is a drain and a flush, normally done where the car is. - This is the best case — which is the entire point of stage one. Engine run, even for a moment? - The lines and the filter already hold petrol drawn from the tank. - On a longer run it has got to the high-pressure pump and the fuel injectors. - The farther it went, the larger the job — your lines, the fuel filter, and now and then more besides. The line falls there since diesel lubricates the high-pressure pump and the injectors on its way through them — and petrol does not. Petrol sitting in a tank harms nothing. Petrol being pumped is grinding down the components that move the vehicle. ## Calling about petrol in a diesel from Bonnyrigg: what to have ready A technician that circles versus a van that finds you: a little preparation is the difference. - Where you have stopped. A postcode beginning EH19 3 is the best place to start. - Wherever you have pulled up, the road's name is useful — whether that is Dobbie's Road or somewhere else — and so does the name of a car park. - Car parks are located more easily by what they serve: tell us the one at Co-op Food, and it's easy. - Tell us what the vehicle is — make, model — and check it's diesel. - Petrol or AdBlue? Tell us which. They are different jobs, and AdBlue has its own Bonnyrigg page. - How much. Litres from the receipt, or how long the nozzle was in. - The mileage it did, and how hard, if it has run at all. - Sort who owns your car ahead of when we turn up: some hire or company agreements want the owner to approve the work, and doing it faster first. Ring 0333 366 0103 next. Email is fine as well if it can wait, with the vehicle left at home, going nowhere. ## The wait for a Bonnyrigg fuel drain, and what to do in it Help, however well meant, is what does the damage while you wait. So hold to these. - Wait with the car if it's safe where it is — but if it has stopped somewhere exposed, 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 it a few yards. - Additives remain in the boot. Injector cleaner and two-stroke oil draw none of that petrol out a second time. - Siphoning petrol into a can by the roadside is hazardous — and it also leaves whatever fuel has already gone beyond the tank. Do not try a home-made drain. - The ignition stays off. Even for the radio or your windows. ## When the van arrives: the fuel drain, step by step - Three questions. What went in, how much, and whether it has run. Those replies shape the job, which is why our quote comes after them but not before. - Clearing it's how that blend gets taken out of that tank. - Purging your lines comes next, since a motor that ran has petrol past that tank, in your lines themselves. - Then the fuel filter: replaced where there's a usable one, cleared where there's not. - Fresh diesel in, and the fuel system primed. - Our engineers start the engine only after new diesel has gone in and bled the fuel system, then check that it is running properly. Only when it's running on clean diesel do our engineers leave. The car returns to normal driving straight away, and lasting damage is very unusual when it has been caught soon. ## Bonnyrigg, after the fuel drain: back on the road - Nothing special is needed after a start with clean diesel — usual driving is all. - Pull over and ring us back if anything looks wrong early on — a light on your dash, smoke from the exhaust, an idle that is lumpy, or a throttle with a dead spot. - The paperwork answers the question a rental company, fleet manager or insurer may ask: what work was carried out. Keep it. - Check the label on the petrol pump next time, not the colour of its handle. ## About Bonnyrigg itself Bonnyrigg is a town in Midlothian, situated inland at an elevation of 107 metres, approximately 6 miles southeast of Edinburgh. Bonnyrigg has a mix of housing types, with terraced housing being predominant, and is close to nearby places such as Staiside Court and Waverley. Bonnyrigg is located near the Quarryhead area and has a population of around 18,103 people. Bonnyrigg is also relatively distant from London, at around 325 miles away. ## Fuel drains around Bonnyrigg and beyond Petrol in diesel call-outs around Bonnyrigg and in Staiside Court, Waverley or Quarryhead all go to the same teams, which reach most of Midlothian too. Ring and ask rather than guessing if you're somewhere hard to describe or close to a border. ## Petrol in a diesel anywhere across Midlothian? Off, then ring Petrol in Diesel takes it from there — on your driveway, by the roadside, at the forecourt — once you've done stage one: keys out, motor off, receipt in your pocket.