--- title: Petrol in a Diesel Car Blackhall Colliery — Fuel Drain canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/blackhall-colliery-durham/ location: Blackhall Colliery county: Durham latitude: 54.748400 longitude: -1.294670 service: Petrol in a Diesel Car updated: 2026-10-13 --- # Put Petrol in a Diesel Car in Blackhall Colliery? With your tank still holding the fuel and your engine not yet run, almost every job requires only a drain, so leave the engine off. That result is determined in the minutes right after the fill-up, rather than by the amount that got in. Throughout Blackhall Colliery and the rest of Durham, Petrol in Diesel drains your car and cleans it where it is, whether by a roadside, on a drive or at a forecourt. One ring to us is sufficient: our engineers will tell you what follows next. Make that first. ## What now? Petrol in a diesel, step by step - Never crank it. Started anyway? Then never believe it. Diesel in a petrol car generally will not run, so the person stops and the damage ends with them. Petrol in a diesel? It starts. It idles. It drives off fine, for a couple of miles. Motorists get that confused. It isn't all right — the fuel system is wearing down every mile you do. - Diesel combusts, and before it ignites it lubricates — the high-pressure fuel pump, its injectors. Petrol does only the burning. So leave the ignition be also: turning it on is commonly sufficient to prime the system, and priming draws petrol from your tank into precisely those components. - Don't dilute it. Diesel put on top gets rid of nothing, so all you get is more of what was already there, because percentage isn't how a diesel fuel system copes with petrol. Super unleaded? Still petrol. The grade makes no difference. - We'd much rather drive to an awkward location than have it started — so if you sensibly can, stay put. Nothing is quicker to handle than a car that has not moved. On the verge on Tenth Street, that means hazards on then leave the car. - Before you dial, work out your position. Anything closest to you with a sign on it, plus a postcode that starts TS27 4 — that's what determines whether the van arrives or circles. - Three details decide the entire visit: the liquid you put in, the rough amount involved, and if it has been turning since. Our line is 0333 366 0103. How far you travelled is what our technicians query, not how long the motor has been stood — and here's why. Diesel has two roles on its way through the engine: it combusts, and before burning it lubricates that injection pump and the injectors. Petrol handles the first only. So a hurried fill on the road in, the realisation coming close to eleven, and a diesel Volkswagen Golf parked outside Horden since quarter past eight means those few miles were covered with the pump running on a liquid robbed of much of its protection. Phone then leave it right where it is. ## Pump-side draining for petrol in a diesel Plenty of the job begins at a pump, meaning a fair portion of it is finished at one. Our technicians work on station forecourts regularly, with the owner's agreement, and so if you're still at Esso that's normally where the drain happens. Nowhere except a garage can it be caught with the engine still untouched. We can still put it right where it sits, even away from the pumps. In a car park, on a drive or in a lay-by, the vehicle has been switched on and driven there, and that drew fuel through your filter and into the high-pressure pump, right from the tank. None of that is a catastrophe, although the flush then has to go past the tank to the lines and the fuel filter, and the few seconds between checking the till receipt and going for the key are what decide that. Clear of the pump, the next driver can get by — so yes, let the staff help you wheel the vehicle. Well worth it. Cranking the car for four car lengths? Not a chance. The difficult part is that bay, not your fuel. Motors either side of you, a trolley shelter behind, and from time to time a height barrier on the way in that decides if a technician can get to you at all — so when you ring from a car park like the one outside Aldi, tell us how much clearance there is round you and which way round your car is. Those our engineers visit frequently. Should there be no room to work beside the diesel Renault Megane, it gets rolled with the motor off, and not out of fussiness over a few seconds of running: priming takes place at every start, more of that mix departs that tank for your pump, and two shunts into a better space have quietly made a harder job of what was merely a car sitting still. ## Blackhall Colliery plus the places near it Blackhall Colliery is a coastal area, and we go out to it and to the villages by it on the same runs: High Hesleden, Blackhall Rocks, Hesleden, Horden and Monk Hesleden. There are separate pages for most places around Durham, and the ones listed above are simply the nearest neighbours — so yours being missing from this list means nothing whatsoever about if our technicians come. Assuming is the thing to skip, especially on the boundary or somewhere a satnav goes wrong. Contact us to check. Look at the map for the patch shown on this page. Roadside, forecourt, driveway, car park: the lot is ground our engineers work on, and none of that needs the car to travel to us. Twenty to nine. By Blackhall Primary School. Late already, and the receipt in your hand says unleaded. Switch your hazards on, leave the ignition alone, and call us. You may think three miles is nothing, in the Audi A4 or anything else — except that fuel is supplied on demand, and a run taken in a rush needs a great deal of that. ## Broken down by the kerbside in Blackhall Colliery Not everyone has a chance to stop somewhere sensible. Hazards going in a lay-by somewhere, or stopped on the verge beside Hardwick Street since you worked it out after setting off — our technicians take that call regularly enough that it's the normal kind. Whether you wait by the vehicle or keep clear of it hangs on whether staying there seems safe. It will usually oblige. A diesel running on petrol limps along very willingly, and that is the trouble: fire it up to get to somewhere handier and that mixture goes further into your fuel system with every mile covered. Our van heading to a difficult spot is no bother for us, and it is much better for the car than carrying on. ## Some miles on petrol in a diesel: what now? Your A1(M) is the one that matters here, and sits under 10 miles from Blackhall Colliery. A loss of power, a rough idle, smoke: those are the symptoms when they arrive, instead of a neat stop — and a misfilled diesel will usually get you onto it and some distance along before anything seems wrong at all. Pull off at the next safe exit, turn off, and never start it to reposition. Presume the worst of it on a long drive. Anything approaching the under 15 miles to the nearest city, and the contamination has been through the fuel filter, through the pump, through the injectors. Say so when you call. What we bring alters. Pull over somewhere sensible, turn off then ring us. Fine on the way out to Welfare Park, gutless on the way back? Then look at the tank. Petrol weakens diesel; thinner fuel slips past the precision components that build injection pressure; and the farther your diesel Mercedes C-Class travelled, the less of that pressure it held. ## Where is Blackhall Colliery? Blackhall Colliery is a coastal locality in County Durham, situated near the mouth of the River Wear and approximately 11 miles north of Sunderland. Blackhall Colliery has a population of around 2351 people, predominantly living in terraced housing. Blackhall Colliery is close to nearby places such as High Hesleden, Blackhall Rocks, and Hesleden, and is about 69 metres above sea level. Blackhall Colliery is located in the North East region of England, some 229 miles north of London. ## What follows when our technicians get to you in Blackhall Colliery - We ask first, price after. What went in? How much? Has your engine run? Those responses shape what the work actually is. - We drain that tank of all the contaminated mixture. - Fuel lines are rinsed through and the fuel filter cleaned, leaving nothing in the fuel system that started any of this. - Bleeding the system follows, once new diesel is in. - It is fired up with new diesel in it, and our engineers confirm that it's running smoothly. At that point it is ready to drive away. Our engineers do everything wherever your car has ended up, which means it never needs to be taken to a garage, and if it has been caught soon, it is very rare for there to be lasting damage. About as well as this goes, once the engine has turned: away from the pumps, receipt read, and your diesel Peugeot 3008 parked by Blackhall Methodist Church scarcely two streets on. Ring us, then leave it off. A short distance does genuinely help. It was still a start and still a drive, though, so the fuel filter and your pump have had diluted fuel through them — hence cleaning your lines instead of only emptying the tank. ## AdBlue in a diesel tank around Blackhall Colliery is a separate matter The fault isn't the same, though the first rule is — do not start it — if what went in was AdBlue rather than petrol. Thinned diesel, and no protection left for the fuel system that depends on it. That's petrol. AdBlue is urea in water, and in a diesel tank it causes rust and deposits instead. Both are ours. There's a separate Blackhall Colliery page for AdBlue removal, with the full story on it — including the reasons it usually turns out to be the worse of the two. ## How much is a petrol-in-diesel drain in Blackhall Colliery? We cannot put one price on this page frankly, because this job is not one job. What shifts it: - This is the key one: whether your engine has been run, or driven. - Wrong fuel in, against what that tank takes — that proportion. - The type of fluid in the tank, unleaded or AdBlue. - Access: the vehicle's position, and if working on it there is safe for a technician. Tell us what your car is, how much went in, and whether the engine has run. A straight answer comes back, not a range. Car at home, going nowhere, nothing time-critical about it — is fine for that. ## Blackhall Colliery drivers ask us these about petrol in diesel ## Can you do a fuel drain at a petrol station in Blackhall Colliery? Yes, and it's where a fair portion of this work gets done. Tell us which one you're at when you ring and we'll tell you whether we can work there. With the station's consent our technicians attend Shell and the other forecourts around town routinely. ## How much petrol in a diesel is too much? Litres aren't the yardstick. Proportion is, and much more than either, it matters whether anything has been run. What settles how much work is required is whether that mixture has been drawn through the fuel system — since although five litres in a nearly empty tank is a separate case from five in a full one, either way that is the question. ## Already driven it with petrol in the diesel? Now what? Pull over somewhere sensible, switch off, and keep the vehicle off. It's salvageable far more often than people expect, even though driving is what moves the trouble from your tank into your pump and injectors — and the single most valuable thing you can do now is not restart it. ## Is a fuel drain going to void my warranty? No. Carried out properly, clearing and flushing is no change at all, and the warranty from your manufacturer is unaffected by it. Running a diesel on petrol is the thing more likely to cause an argument with one, which is another reason to leave the car switched off. ## Could I put some two-stroke in and just drive? What petrol has diluted is not put back by two-stroke oil, which is an old remedy for a distinct issue. So no. The tank still has petrol in it later on, and the pump still has to cope with it. ## Does petrol in a diesel have to go to a main dealer? No. We drain and clean the vehicle wherever it is, so there is no need to bring it to a franchised dealer. ## You, and your vehicle, still together? Shut off is how the car remains. Driven it already? Then somewhere sensible, stop, turn off, and no restarting it after that. A parked, cold vehicle is the best position to be in, and this is recoverable from far more regularly than motorists assume. At the kerbside, on the forecourt or at home — call-out fuel draining around Blackhall Colliery and across Durham.