--- title: Petrol in a Diesel Car in Newtongrange? — Fuel Drain canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/newtongrange-midlothian/ location: Newtongrange county: Midlothian latitude: 55.866810 longitude: -3.066930 service: Petrol in a Diesel Car updated: 2026-10-06 --- # Put Petrol in a Diesel Car in Newtongrange? Don't Start It If you have not turned on the engine yet, do not. A fuel drain and nothing more is nearly always what a car requires while the petrol is still inside your tank and your engine has not run, which is why it's the next few minutes that matter, not how much went in. Petrol in Diesel travels to the car wherever it has come to rest in Newtongrange or the remainder of Midlothian, on the forecourt, at the roadside or on a private drive, and drains and flushes it there. Contact us so our engineers shall show you what follows after that before you try any more. ## Your next five steps: petrol in a diesel - Never fire it up. Fired up anyway? Then never believe it. Diesel in a petrol vehicle typically will not run, and so the driver stops and the wear stops with them. Petrol in a diesel? It starts. It idles. It drives off normally, for a few miles. Most people get that confused. It's not okay — the fuel system is wearing every mile you drive. - Diesel burns, and before it combusts it greases — your injection pump, its injectors. Petrol manages only the burning. So leave your ignition be too: switching it on is usually sufficient to prime that system, and priming pulls petrol from your tank into exactly those components. - Topping up takes out nothing. It leaves you a bigger tank of the same blend, since a diesel fuel system doesn't accept petrol by percentage as that guidance implies — so never add diesel on top to thin it. Octane is beside the point too: super unleaded is petrol. - Remain where you are if you reasonably can. A vehicle that hasn't moved is the quickest one to deal with, and our team would much rather drive to a tricky spot than have it started. If you are parked on the verge on St Davids, turn your hazards on then keep it there. - The van turning up instead of circling rests on two things: a postcode starting EH22 4, and whatever is nearest to you with a label on it. Get both ready before you dial. - What went in, roughly how much, plus if the engine has run — these three facts shape the full job. Ring 0333 366 0103 then tell us. ## On the forecourt: draining petrol from a diesel Forecourts are where this work usually starts, and where a big share of it finishes. If you are still at the forecourt at Shell, that is normally where this drain gets done — our technicians work on station forecourts routinely, with the station's permission. Before the motor has fired — a forecourt is the single setting the mistake ends up spotted. Everywhere else — a car park, a private drive, a lay-by — the car was started and moved to get there, which means fuel was sucked from the tank, through the fuel filter and into the high-pressure pump. That is not a catastrophe, and our engineers can still put it right where it stands. It does mean the lines and the filter need cleaning as well as the tank, and that's determined by the few seconds between seeing the till receipt and reaching for the key. Wheel the vehicle out of the way if the attendants offer, and they generally will. The next motorist gets past the pump, and that is worth doing. Cranking the car just for four car lengths? No. ## Service in Newtongrange Monkswood, Lothianbridge, Gowkshill, Bryans, Mayfield — every one of those on our journeys that take us over to Newtongrange too, a village. If yours isn't on this list it does not mean we never come — there are dedicated pages for the majority of places across Midlothian, and the ones mentioned above are merely the nearest neighbours. Guessing is the mistake to avoid, especially on the border or anywhere your satnav goes wrong. Contact us to check. Use our map for the ground shown on this page. Roadside, forecourt, drive, car park: all of that is territory our technicians work on, and none of that needs the vehicle to come to us. Twenty to nine. At the gates of the local primary school. Late already, and your receipt in your hand reads unleaded. Turn the hazards on, leave your ignition alone, and ring us. You might think three miles is nothing, in your Nissan Qashqai or anything else — except that fuel is metered on demand, and a dash taken in a hurry asks for a great deal of that. ## Roadside breakdowns in Newtongrange Not everyone has a safe place to pull in. If you realised after setting off and ended up by the verge of Main Street, or at a lay-by somewhere with the hazard lights flashing, that's a routine call for us and not an odd one. Safe where you are? Stay by it. Not fine? Get out and clear of it. Do not start it up to reach a better location. It will go — a diesel on petrol normally obliges — and each mile of obliging pulls the mix deeper into the system. We'll send our van to an awkward place without any trouble, and for your car that's a lot better than pressing on. Don't risk it. The drive home from The Dean Tavern is entirely possible, which is exactly the problem — a weakened tank doesn't stop a diesel starting or pulling away, it just wears the parts your fuel is meant to lubricate. Ring us, and let the Ford Focus stay where it stands. ## Run it already? Pull in, then read this Here is where the local M8 comes in — under 15 miles from Newtongrange. It will often take you onto it, and some way along, before you spot a thing. Then it's smoke, a lumpy idle and power ebbing away — not a tidy stop. Wrongly fuelled diesels seldom give you one of those. Take the first junction that is sensible, pull up there, and don't restart the vehicle to reposition. It alters what our technicians bring, and so tell us when you call: on a longer run — anything near the under 10 miles to the closest city — take it the mixture has been through your filter, your pump and the fuel injectors. A diesel injection system works hydraulically as well as chemically: the fuel has to hold pressure, not only burn. Thin that fuel and pressure which should build and stay built leaks past clearances instead, leaving the engine a weaker, later, less even delivery than it was designed around. Petrol weakens diesel, and diesel has to be heavy enough to seal the close-fitting parts it passes through — that's the whole mechanism. It accounts for the normal Newbattle Bowling Club call too: a diesel Mercedes C-Class that travelled out without fuss and came back down on power, uneven at idle, maybe smoking a little. None of which is the motor failing, and that's the bit worth hearing. The fuel has stopped behaving like diesel. Put the fuel right and it stops. ## Where's Newtongrange? Newtongrange is a village situated on the riverside in Midlothian, with a mix of terraced housing and other residential properties, and is located approximately 7.6 miles from Edinburgh. Newtongrange has a population of around 2362 people and is set at an elevation of 95 metres, near to other local places such as Monkswood and Lothianbridge. Newtongrange is part of the wider Edinburgh commuter belt, with the city centre being a short distance away. ## What follows when our technicians get to you around Newtongrange - We establish what got in, how much, and whether your motor has run. The answers alter the work, which is why our engineers ask before giving a price. - The tank gets emptied completely. - Lines purged, filter cleared. Whatever remains later is not the thing that caused the issue. - Our technicians put clean diesel in and prime your system. - When it is turned on, we confirm it runs smoothly on clean diesel. From that point, you're ready to pull away. There's no need to go to a garage at any point, as the work is all done where your car is, and when it is spotted quickly, permanent damage is very rare. ## AdBlue in your diesel tank by mistake, in Newtongrange? The issue isn't the same, though the opening instruction is — don't fire it up — if what got in was AdBlue rather than petrol. Petrol does two things to diesel: thins it, and strips out the lubrication the system depends on. AdBlue is urea dissolved in water, and in a diesel tank it causes rust and deposits instead. AdBlue removal around Newtongrange has a page of its own with the details on it, including why it is usually the more significant of the two. Our technicians cover both. A vehicle you picked up two days ago gets driven further before anyone spots anything, which is the hire and courtesy issue in one sentence — and how far it went is what decides the amount of petrol reaching the fuel injectors. Nothing careless about the mistake itself: a newer diesel filler neck accepts the slimmer petrol nozzle with practically no resistance, and so unfamiliar spots see most of these. Phone us from wherever you are, near Miners' Memorial or not, and we'll come to the Audi A3. ## Newtongrange prices for a petrol-in-diesel fuel drain Our engineers can't put one figure on this page truthfully, as the job is not one job. What moves it: - This is the main one: whether your motor has been run, or driven. - The tank's capacity, set against how much of the wrong fuel got into it. - Whether it is petrol or AdBlue. - Where is it? And can a technician reach it and work there sensibly? The vehicle, the quantity, whether it has run — give us those and the answer comes back clear instead of as a range. If it is not urgent — the vehicle is at home and going nowhere — is fine too. A couple of streets, then it stopped. Throttle limp, idle lumpy, and the diesel Volvo XC60 is parked up by Newbattle Congregational Church. Your engine isn't failing — that deadness is fuel that will not build pressure. There's no light on the dash for it, and so cars like yours typically get driven again before anybody picks up the phone. Don't. Off, then phone us. ## Petrol in diesel questions from Newtongrange motorists ## Can you do a fuel drain at a petrol station around Newtongrange? A good share of this work gets done there, so yes. Our technicians work at BP and the other forecourts nearby all the time, with the owner's permission — tell us which one you're at when you phone and we will tell you whether we can work there. ## Is there a sensible quantity of petrol in a diesel? It depends on the proportion rather than the litres, and much more on whether your motor has run. What settles how much work is needed is whether that blend has been sucked through the fuel system — because though five litres in a nearly empty tank is a different matter from five in a full one, either way that is the query. ## I put petrol in my diesel and drove it. Now what? Somewhere safe, then stop, then switch off and keep it off. Driving shifts the problem along — out of your tank, into your pump and injectors. Drivers fear it a good deal more than the recovery rate warrants, mind. The one truly valuable thing left to you isn't restarting the vehicle. ## My warranty — does a fuel drain void it? A manufacturer's warranty survives a drain then flush done to a correct standard, which is no modification at all. What is likelier to start a disagreement is a diesel that has been run on petrol. One more reason for the engine to remain off. ## Can I just add two-stroke oil and drive home? No. Two-stroke oil is an old fix for a different problem and it does not put back what petrol has weakened. After that? Still petrol in your tank, and a pump that has to cope with the stuff. ## Does petrol in a diesel have to go to a main dealer? You don't need one. The car is drained and cleaned wherever it is, with no need to take it to a franchised dealer. ## You, and your car, still together? Shut off is how the car stays. If you have already driven it, pull over somewhere sensible, turn it off then keep it off. Cold, parked, going nowhere: that is the best place to be in. People fear this a lot more than they need to. Emptying wrongly fuelled cars, Newtongrange and the rest of Midlothian, wherever they are. Kerbside. Forecourt. Home.