--- title: Drain Petrol From a Diesel Car — Lodway canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/lodway-somerset/ location: Lodway county: Somerset latitude: 51.479110 longitude: -2.695430 service: Petrol in a Diesel Car updated: 2026-10-10 --- # Petrol in a Diesel Car in Lodway With the tank still holding the fuel and the engine not yet started, almost every job requires only a drain, so keep the engine off. That result is decided in the minutes immediately after the fill-up, and not by the amount that got in. Across Lodway and the remainder of Somerset, Petrol in Diesel drains the vehicle and flushes it where it is, whether by a roadside, on a private drive or at a forecourt. Our technicians can tell you what your next step is. Call us — that comes before all else. ## What to try first about petrol in a diesel - While you drive, your pump and the injectors wear. This is why you do not crank it, and why you never rely on it once it has started. The trick about petrol in a diesel especially — the bit motorists get wrong — is that it pulls away fine for the first mile or two. Diesel in a petrol engine usually cannot run at all, which stops the person and stops the wear with them. This one lets you carry on. - Leave the ignition be as well. Diesel performs two roles: it ignites, and before it ignites it lubricates your high-pressure fuel pump and the injectors. Petrol handles the first and not the second. Flicking your ignition on is usually sufficient to prime your system, which moves this petrol out of that tank then into exactly those components. - That guidance supposes a diesel fuel system tolerates petrol by percentage. It does not. Put diesel on top and nothing at all is cleared; what you have is a fuller tank of the same blend. And no, the type makes no difference — super unleaded is just petrol. - Stay where you are if you sensibly can. A motor that has never shifted is the quickest one to sort out, and we would rather drive to a difficult location than have it started. If you're stopped on the verge on Fernlea Gardens, switch your hazards on then keep the car there. - Before you call, get your location. Anything closest to you with a label on it, plus a postcode beginning BS20 0 — that's what determines whether the technician turns up or circles. - Ring 0333 366 0103. Anticipate three queries — what was put in, approximately how much, plus whether the motor has been started. The answers determine all that comes after. Quarter past eight. A hurried fill-up on the road in. Somewhere around eleven it hits you, and by then your diesel Renault Clio has sat at Portway Park & Ride for three hours. Call us then keep the vehicle where it is. What is key is the trip in, because diesel both combusts and — before that — protects your pump and the fuel injectors, but petrol only ever ignites. Those few miles ran the pump on a fluid drained of a lot of its protection, and no quantity of standing in a car park adds any of that back. Hence the thing we ask about distance rather than hours sitting, and hence the request to leave the keys be until our technicians arrive. ## At the forecourt: clearing petrol from a diesel Much of this job starts at a forecourt, so a big portion of it ends up finished there. If you're still on the forecourt at Lodway Service Station, that is typically where this drain takes place — we operate on garage forecourts all the time, with the station's agreement. Nowhere else other than a garage can the mistake be spotted with the motor still untouched. The few seconds between reading your receipt and going for your key settle how much requires cleaning. Everywhere other than a forecourt — a car park, a drive, a lay-by — the vehicle was started and moved to get there, so fuel was sucked from the tank, through your filter then into your high-pressure pump. That means the lines and your filter need flushing as well as the tank. It's not a catastrophe, and we can still deal with it where the vehicle stands. Staff will usually help out pushing it clear of the pump, which lets the next driver get past. Accept the help. Starting the car to roll four car lengths is not. Petrol in the Volkswagen Tiguan, and it takes diesel? Shopping in your boot, you outside Shirehampton Co-op, somewhere around Lodway? Then call us, and leave your engine out of that — not even to leave that spot. Somebody comes to you. Tank drained, fuel lines cleaned, new diesel in, and home you go. Light throttle over a mile pulls hardly anything, so these tend to be the straightforward jobs. ## Service around Lodway Those same journeys get us to Easton-in-Gordano, Pill, Ham Green, Shirehampton and Portbury along with Lodway, which is a residential suburb. If yours isn't on the list that does not mean we don't come — there are separate pages for most places around Somerset, and the ones listed above are just the immediate neighbours. Ring us to check instead of guessing, particularly when you are on a border or anywhere your satnav can't find. The area this page covers sits on this map. The vehicle does not need to travel to us. We work throughout every bit of it — kerbside, forecourts, driveways, car parks. Shift the vehicle out of the gateway and fix it later — that's what someone will say, and it's wrong. Parked on the zig-zags at Crockerne Church of England Primary School, a misfuelled diesel Skoda Octavia is a hassle and nothing worse. Started three more times for courtesy, it is no longer a tank problem but a fuel system one, as priming takes place with every start and more petrol goes past your filter on to the pump. Let people grumble. Ring us. ## Lodway: broken down wherever you stopped Some people get no sensible place to pull over at all. If you realised after setting off and ended up along the verge of Priory Road, or in a lay-by somewhere with the hazards going, that's a common call for us and not a rare one. Out of the car when it isn't safe to sit in it, beside it if it is. Do not fire up the engine to limp it somewhere handier — a diesel running on petrol will usually oblige, and every mile it obliges for is drawing the mix further into the system. However tricky the place, it's no problem for us to get to it, and that is far better for the car than carrying on. ## Petrol in a diesel, but the car has gone Your M5 is the road which matters now, and runs under a mile from Lodway. It will usually get you onto it, and some way along, before you notice a thing. Then it's smoke, a lumpy idle and power falling away — not a neat stop. Misfuelled diesels rarely give you one of those. Take the next exit that is safe, pull up there, and never restart it to move it. Suppose the worst of that on a long drive. Anything near the under 5 miles to the nearest city, and the petrol has been through the fuel filter, through your pump, through the fuel injectors. Tell us when you phone. What our engineers bring differs. ## Where is Lodway? Lodway is a suburban area in Somerset, situated near the coast and approximately 4.4 miles from Bristol. Lodway has a population of around 3226 people and is characterised by semi-detached housing. Lodway sits at an elevation of 21 metres, close to nearby places such as Easton-in-Gordano and Pill. Lodway is also within commuting distance of major cities, with London being around 110.5 miles away. ## What our technicians do when our technicians arrive with you in Lodway - Three things get asked before any price — your fuel that got in, the quantity, and if anything has been run since. Each answer alters the work. - That tank is drained of everything. - Fuel lines are rinsed through and your filter cleaned, leaving nothing in the fuel system that started any of this. - Your system gets bled, on fresh diesel. - We turn it on and check it runs properly on clean diesel. Your car is then ready for you to pull away. Permanent damage is very unusual when it has been noticed soon, and since all of this is done where the car is, it never needs to be taken to a garage. ## A separate problem: AdBlue in a diesel tank around Lodway AdBlue instead of petrol? Then the first instruction is unchanged — the engine remains off — while the problem beneath it is a distinct one altogether. Petrol thins your diesel and strips the lubrication the fuel system depends on. Corrosion and deposits are what a diesel tank gets instead, as AdBlue is urea dissolved in water. AdBlue removal in Lodway has a page of its own with the details on it, including why it is often the more serious of the two. Our technicians deal with both. Hire car? Company car? Phone them before us. Some agreements want the firm to authorise the work, and that's much faster dealt with up front than after that. Then ring us about the Peugeot 3008, the diesel one, near 1st Crockerne Scout Group. Don't worry that you cannot say how full your tank was — almost no one can two days into a car, and it's something we work out on site. The reason for asking: damage from petrol in a diesel is a matter of proportion. A few litres in an almost empty tank make a far stronger blend than in a full one, and petrol is built to resist the very thing a diesel needs of it, which is igniting when compressed. Stronger mix, more knocking, more smoke, flatter throttle. ## Budgeting for a petrol-in-diesel drain around Lodway What shifts the figure is set out below, because this job is not one job and our engineers cannot honestly put a single number on this page. - Whether the engine has been run or driven. This is the main one. - The tank's capacity, set against how much of the wrong fuel went into it. - The type of fluid in the tank, petrol or AdBlue. - Access: the car's position, and whether working on it there is safe for a van. The vehicle, the amount, whether it has run — give us those and the answer comes back clear rather than as a range. Motor at home, going nowhere, nothing time-critical about it — is good for that. It got a few streets and stopped. The throttle went limp, the idle turned uneven, and your diesel Mercedes E-Class is now waiting close to St George. That deadness is your fuel failing to build pressure properly not the engine failing — and as there's no warning light for it, motors in that position typically get driven once more before somebody calls. Please don't. Turn it off and phone us. ## Petrol in diesel: frequent queries around Lodway ## Fuel drains on a Lodway petrol station forecourt Yes, and it is where a big portion of this work takes place. Our engineers visit Shell and the other forecourts nearby routinely, with the owner's permission — tell us which one you're at when you ring and we'll tell you whether we can work there. ## How much petrol in a diesel is too much? Proportion decides it instead of litres — and more than either, whether your motor has run. What determines how much work is needed is whether that mix has been sucked through the fuel system — because though five litres in a nearly empty tank is a different situation from five in a full one, either way that is the query. ## Already driven it with petrol in the diesel? What then? Somewhere sensible, then stop, then turn off and leave it off. Not restarting it is the single most helpful thing available to you now. Driving does shift the trouble out of the tank and into your pump and injectors, yes, and it stays recoverable much more commonly than people fear. ## Will a fuel drain void my warranty? It is not a change, and so a drain and flush carried out properly doesn't invalidate a manufacturer's warranty. What is likelier to start a disagreement is a diesel that has been run on petrol. One more good reason for the motor to stay off. ## Could I put some two-stroke in and just drive? Two-stroke oil solves a separate problem, and an old one at that. Nothing it does puts back what petrol diluted. No. The pump still has to live with it, since your tank still has petrol in it later. ## Do I need a main dealer for petrol in a diesel? You don't need one. Your car is drained and cleaned wherever it is, with no need to bring it to a franchised dealer. ## Still with the vehicle? Switched off is how the car remains. If you have already driven it, pull in somewhere safe, turn it off then keep it off. A parked, cold motor is the best position to be in, and this is recoverable from much more commonly than motorists expect. Mobile fuel draining around Lodway and across Somerset — at the kerbside, on the forecourt or at home.