--- title: Drain Petrol From a Diesel Car — Dodhill canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/dodhill-somerset/ location: Dodhill county: Somerset latitude: 51.046660 longitude: -3.117850 service: Petrol in a Diesel Car updated: 2026-10-26 --- # Dodhill: Put Petrol in a Diesel Car? Never start the motor. If the fuel is still sitting in that tank and the motor has not yet turned over, a fuel drain is almost always all it takes — and that gets settled in the following few minutes, not by how much was put in. Petrol in Diesel drains and flushes wrong-fuelled vehicles where they stand, all over Dodhill and the remainder of Somerset, on the forecourt, by the roadside or on a drive. Contact us so we shall tell you what comes from here before you try anything else. ## The next five minutes: petrol in a diesel - Don't fire it up — and do not rely on it if it starts. Here is the part drivers have wrong about petrol in a diesel specifically. A petrol motor filled with diesel usually just cannot run, and so the person stops and the wear halts with them. A diesel given petrol normally starts, idles and drives off perfectly well for a few miles. It is not fine. It's wearing your fuel system as you drive. - Diesel burns, and before it combusts it protects — your high-pressure pump, those injectors. Petrol handles only the burning. So leave the car's ignition off as well: flicking it on is often all it takes to prime that system, and priming moves petrol from the tank into precisely those parts. - Never weaken it. Diesel put on top removes nothing, so all you get is more of what was already there, because percentage is not how a diesel fuel system accepts petrol. Super unleaded? Simply petrol. The grade makes no difference. - We'd sooner travel to an awkward spot than have it started — so if you reasonably can, stay still. Nothing is simpler to sort than a vehicle that has not moved. On the verge on Kingston Road, that means hazards on and leave it. - Keep your position ready before you dial. A postcode beginning TA2 8 and whatever is nearest to you with a label on it is the difference between a van arriving and our van circling. - Dial 0333 366 0103. Say what got in, about how much, and whether the motor has started. Those three facts shape the entire call-out. Never drive it home. The drive in has already put a real load of petrol-thinned diesel through the high-pressure pump of your Renault Megane, and the trip back would about double it for no reason at all. Ring us from the platform if that is handier. Our technicians never need you hovering over the car outside Taunton while our engineers get on, and our team would far rather speak to you tonight than discover on Monday. ## Forecourt drains for petrol in a diesel Most of the work begins at a pump, meaning a good part of that ends up done on site. Our technicians work on station forecourts regularly, with the site's agreement, and so if you are still at Texaco that's generally where the drain gets done. Before the motor has run — a garage is the one place the mistake is halted. The few seconds between seeing your receipt and reaching for the key decide how much requires rinsing. Anywhere other than a forecourt — a car park, a driveway, a lay-by — your car was fired up and driven to get there, so fuel was drawn from your tank, through the filter and into the high-pressure fuel pump. That means the fuel lines and the fuel filter need rinsing as well as your tank. It's not a catastrophe, and our technicians can still put it right where the car sits. Roll the car out of the way if the staff volunteer, and they usually will. The next customer gets through the petrol pump, and that is worth doing. Starting it just for four car lengths? Don't. The complicated part is that bay, not your fuel. Vehicles either side of you, a trolley shelter behind, and now and then a height limit on the way in that decides if our van can reach you at all — so when you ring from a car park like the one at Co-op Food, mention how much clearance there's round you and which way round the car is. Those our technicians cover frequently. Should there be no space to work next to your diesel Volkswagen Passat, it gets rolled with your engine off, and not out of pedantry over a handful of seconds of running: priming occurs at every start, more of that blend exits that tank for your pump, and two shunts into a nicer bay have silently made a harder job of what was merely a motor sitting still. ## Coverage near Dodhill Being a rural hamlet, Dodhill gets a routine call, while the places nearby come with it on that same journey: Nailsbourne and Mill Cross, Upper Cheddon and Fulford, Staplegrove. If yours isn't on this list that does not mean we don't come — there are separate pages for nearly all locations in Somerset, and the ones named above are just the closest neighbours. Contact us and ask rather than guessing — boundaries above all, and anywhere your phone may get wrong. This map shows the patch this page spans. The lot is territory we cover: a roadside, a forecourt, a drive, a car park. You don't drive the vehicle anywhere. You will be urged to shift the vehicle out of the gateway and fix it later. Do not. On the zig-zags at Kingston St Mary Church of England Primary School, a misfilled BMW 3 Series running on diesel is in the way, and that is all it is. Start it three more times being courteous and you have turned a tank into a fuel system: every start primes the fuel lines, every prime drags more petrol through the fuel filter on to the pump. Let them grumble. Call us. ## Stopped on the kerb anywhere in Dodhill? Not everyone has a suitable spot to pull over. If you realised after setting off and landed on the verge on Langford Lane, or at a lay-by somewhere with your hazards flashing, that's a normal call for us and not an odd one. Safe where you are? Stay with it. Not fine? Move out and clear of it. Never fire it up to get to a better spot. It will go — a diesel on petrol generally obliges — and each mile of obliging drags the mixture deeper into your fuel system. Carrying on causes your car far more harm than a technician coming out to a tricky spot, and that is no trouble for us. Try the trip home from the pub in the village? No. It will start and it will drive off quite happily, which is the trouble — a diesel on a thinned tank behaves typically whilst wearing the components the fuel should be lubricating. Park the Peugeot 308 and call us. ## So you've driven it? Petrol in a diesel over a few miles This is where the local M5 comes in — under 5 miles from Dodhill. It will frequently get you onto it, and some way along, before you feel a thing. Then it is some smoke, an uneven idle and power ebbing away — not a neat stop. Misfilled diesels rarely give you one of those. Do not start it to move it. Get off at the first safe junction then turn off. On a longer trip — anything approaching the under 25 miles to the nearest city — assume the contamination has been through your filter, the pump and the injectors, and mention it when you phone. It alters what our engineers bring. Sitting still, it gets no worse. The pump isn't turning, and so whatever occurred on the way to Plot 17 in that diesel Ford Focus is finished happening. Time is yours. Just do not take it home on the engine to find more of that. ## Where is Dodhill? Dodhill is a small hamlet in inland Somerset, situated at an elevation of 52 metres, and is located near the villages of Nailsbourne and Upper Cheddon. Dodhill lies approximately 23 miles from the city of Wells and is characterized by its predominantly detached housing stock. Dodhill is a rural community with a population of around 516 residents, and is surrounded by the rolling countryside of the South West region. Dodhill is also within commuting distance of larger towns, being around 133 miles from London. ## What we do when our engineers reach you around Dodhill - Three things get asked before any price — your fuel that got in, the amount, and whether anything has been run since. Each answer alters the work. - Our technicians empty your tank of the polluted fuel. - Our engineers flush the lines and clean the fuel filter, so what is remaining in the system isn't what caused the trouble. - We put fresh diesel in and prime the system. - Our technicians turn it on and make sure it runs properly on new diesel. From there, you are ready to set off. There's no need to go to a garage at any point, because the work is all done where the car is, and when it is caught quickly, long-term damage is very uncommon. ## Dodhill AdBlue removal is a separate job If what got in was AdBlue rather than petrol, the first step is the same — don't crank it — but this issue isn't. The protection a fuel system depends on is stripped away by petrol, which dilutes the diesel. AdBlue? Urea dissolved in water. Pour that in with your diesel and you get corrosion instead, plus residue. Both are ours. There's a separate Dodhill page for AdBlue removal, with the detail on it — including the reasons it frequently turns out to be the worse of the two. ## What a petrol-in-diesel drain will cost in Dodhill One number would not be honest here, because this is not one job. These are the things that change it: - This is the main one: whether your engine has been run, or driven. - The tank's capacity, set against how much of the wrong fuel went into it. - Whether it is petrol or AdBlue. - Whether our van can safely get to your vehicle and work on it, which rests on where your car is. Tell us what your vehicle is, how much got in, and whether the engine has run. A clear answer comes back, not a range. If it is not urgent — the car is at home and going nowhere — works too. ## Things our engineers hear about petrol in diesel in Dodhill ## Fuel drains on a Dodhill petrol station forecourt Yes, and it is where a large share of this work happens. Tell us which one you're at when you call and we will tell you whether our engineers can work there. With the site's permission our technicians attend BP and the other forecourts locally routinely. ## How much petrol in a diesel is too much? Whether your motor has run matters a lot more, though the ratio counts too, instead of the litres. Five litres in an almost empty tank is a separate case from five in a full one — but either way, the thing that settles how much work is required is whether that mixture has been pulled through your fuel system. ## Already driven it with petrol in the diesel? What now? Stop safely. Off. Nothing after that. It's fixable far more often than motorists fear, even though driving is what takes the problem from that tank into your pump and injectors — and the single most valuable thing you can do now isn't restart it. ## Fuel drains and manufacturer warranties It's not a change, so a drain and flush carried out properly does not cancel a manufacturer's warranty. What is likelier to start a disagreement is a diesel that has been run on petrol. One more reason for your engine to stay off. ## Two-stroke oil in the tank, and then home? No. Two-stroke oil is an old workaround for a different fault and it does not put back what petrol has thinned. Afterwards? Still petrol in that tank, and a pump that has to live with the stuff. ## Does petrol in a diesel have to go to a main dealer? You do not need one. The car is drained and flushed wherever it is, with no need to take it to a dealership. ## Is the car still with you? Shut off is the way the car stays. Already driven it? Then pull in somewhere sensible, switch off, and let the car remain that way. A still, cold motor is the best place to be in, and this is recoverable from far more commonly than drivers expect. At the roadside, on the forecourt or at home — call-out fuel draining in Dodhill and across Somerset.