--- title: Petrol in a Diesel Car Hillside — Fuel Drain canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/hillside-somerset-bs26-2/ location: Hillside county: Somerset latitude: 51.288830 longitude: -2.818960 service: Petrol in a Diesel Car updated: 2026-10-16 --- # Put Petrol in a Diesel Car in Hillside? Don't Start It With the tank still carrying the petrol and your engine not yet run, almost every job takes only a drain, so keep your engine off. That outcome is determined in the minutes immediately after filling up, and not by the amount that went in. All over Hillside and the rest of Somerset, Petrol in Diesel drains the car and flushes it where it stands, whether at a roadside, on a driveway or at a forecourt. Phone and our engineers can tell you what comes next before you attempt much else. ## What next? Petrol in a diesel, in order - Do not crank it. Started regardless? Then do not rely on it. Diesel in a petrol vehicle usually will not run, so the person stops and the harm stops with them. Petrol in a diesel? It starts. It idles. It drives off happily, for a few miles. People get that muddled. It is not all right — your fuel system is wearing down every mile you cover. - Two things, diesel: it combusts, and on the way through it keeps your high-pressure pump and injectors protected. Petrol only manages the one. Which is why the ignition is left off as well — turn it on and you commonly prime your system, and that's petrol exiting that tank for just those components. - Don't thin it. Diesel put on top gets rid of nothing, so all you get is more of what was already there, since percentage isn't how a diesel fuel system accepts petrol. Super unleaded? Just petrol. The grade makes no difference. - A car that has not shifted is the easiest one to handle, and so remain where you are if you sensibly can. Pulled up on the verge on Cheddar Road? Hazards on, then keep the car there. An odd location suits us better than a started motor. - Know where you are before phoning. A postcode starting BS26 2, and the name of whatever is next to you. Otherwise the van circles rather than arriving. - Dial 0333 366 0103. Let us know what went in, roughly how much, and if your car has started. These three answers decide the entire call-out. Don't run it home. Petrol-thinned diesel has gone through your high-pressure pump in real quantity on the way in, and the trip back would about double that for nothing at all. Ring us — the platform is good. There's no need to stand over that Volkswagen Passat at Worle while the work gets done, and our team would much rather talk to you tonight than realise on Monday. ## Pump-side draining for petrol in a diesel Plenty of the work begins at a forecourt, so a fair portion of that gets done on site. Our technicians work on station forecourts all the time, with the site's permission, and so if you are still at Texaco that is usually where the drain happens. Nowhere else but a forecourt can it be caught with the motor still cold. Our technicians can still put it right where it sits, even away from the forecourt. In a car park, on a driveway or in a lay-by, the vehicle has been fired up and moved there, and that drew fuel through the filter then into your high-pressure pump, all the way from your tank. None of that is a catastrophe, but the flush then has to go past the tank to the fuel lines and the fuel filter, and the few seconds between checking the till receipt and reaching for the keys are what determine that. Away from the petrol pump, the next motorist can get through — so yes, let the attendants help you push the car. Well worth it. Starting it to move four car lengths isn't. Tell us this much and our technicians can work with it: a diesel Renault Clio, some litres of unleaded in it, two miles or so, shut off at Sainsbury's now. Time gone by is not the thing we need. Fuel drawn by the pump is. ## Will our technicians reach your side of Hillside? These same journeys bring us to Axbridge, Cross, Hale Coombe, New Town and Weare as well as Hillside, which is a residential suburb. There are dedicated pages for the majority of towns around Somerset, and the ones named above are merely the closest neighbours — so yours being absent from this list means nothing about whether our technicians come. Contact us and ask rather than assuming — county lines especially, and anywhere your satnav may get wrong. The area the page includes sits on this map. Your vehicle doesn't need to come to us. We work over every bit of it — kerbside, forecourts, driveways, car parks. Twenty to nine. At the gates of Axbridge Church of England First School Academy. Late already, and the receipt in your hand shows unleaded. Put your hazards on, leave the ignition alone, then phone us. You might think three miles is nothing, in your BMW 3 Series or anything else — except that fuel is metered on demand, and a run taken in a rush needs a great deal of that. ## Roadside breakdowns across Hillside The chance to stop anywhere safe does not fall to everybody. Set off, then twigged? Finished up by the verge beside Fennel Lane, or parked in some lay-by with your hazards on? That is a common call here. Not a rare one. Okay right there? Wait beside it. Not safe? Step out and clear of it. Never restart your motor to nurse the vehicle somewhere handier — a diesel running on petrol will usually oblige, and every mile it obliges for is drawing that mixture further into the system. Our van driving to a difficult spot is no bother for us, and it is a lot better for your car than pressing on. ## So you've run it? Petrol in a diesel over some miles Your M5 is the one that matters here, and it sits under 5 miles from Hillside. Lost power, a lumpy idle, some smoke: those are the symptoms when they appear, instead of a clean stop — and a wrongly fuelled diesel will often take you onto it and some distance along before anything seems wrong at all. Don't restart it to move it. Get off at the first safe exit then switch off. Long trip? Anything approaching the under 10 miles to the closest city and you should presume the lot — filter, pump, injectors, all of it arrived at by the mixture. Say that on the phone, since it changes what goes in our van. ## About Hillside Hillside is a suburban area in Somerset, situated on the riverside at an elevation of 55 metres, with terraced housing being the predominant type of accommodation. Hillside is located near the city of Wells, approximately 9.3 miles away, and is also close to other nearby places such as Axbridge, Cross, and Hale Coombe. Hillside has a population of around 1719 residents and is part of the wider South West region of England. Hillside is positioned relatively far from London, at a distance of 117 miles. ## The visit around Hillside, step by step - Three things get established before any quote — the fuel that went in, the amount, and if anything has been run since. Each answer shapes the work. - Out comes the contaminated mixture. - Fuel lines are rinsed through and your filter cleaned, leaving nothing in your system that created any of this. - Bleeding your system follows, once new diesel is in. - Your engine is started and checked to make sure it runs smoothly on fresh diesel. That leaves it ready to pull away. We do everything wherever the car has ended up, which means it never has to be taken to a workshop, and when it has been spotted soon, it is very unusual for there to be long-term damage. Three things help when you phone from close to Church of St John the Baptist: which side the filler is on, whether our van can park next to without blocking the road, and whether the engine has run since you filled up. On-street is the commonest location our technicians work, and so the location itself is rarely the trouble — we would far rather deal with a tight parking bay than with a car that has been driven to somewhere more handy. We will drain the Ford Focus, change the fuel filter where there is a serviceable one, flush the fuel lines then put fresh fuel through the whole circuit, since by this point the worst of that is resting in your lines rather than in the tank. ## A distinct problem: AdBlue in a diesel tank around Hillside The problem isn't the same, though the first step is — do not crank it — if what went in was AdBlue instead of petrol. Petrol thins the diesel and removes the lubrication your fuel system relies on. AdBlue? Urea dissolved in water. Put that in with the diesel and you get rust instead, plus residue. Our technicians handle both, and AdBlue removal around Hillside has its own page with the full story — including why it's usually the more serious of the two. Hire car or company car? Phone them before you call us — some agreements want the hire firm to authorise the work, and sorting that out first is a great deal quicker than sorting it later. Then phone us about the Mercedes C-Class close to King John's Hunting Lodge;King John's Hunting Lodge (Axbridge Museum), and do not worry that you cannot say how full your tank was. Almost no one can, in a motor they collected two days ago, and our engineers work it out there. The reason our engineers ask is that petrol in a diesel does its harm as a share: the same few litres in an almost empty tank is a far stronger mixture than in a full one. Petrol is rated on how well it resists igniting under pressure, which is the opposite of what a diesel needs — so the stronger the mix, the more it rattles, smokes and goes flat. ## How much is a petrol-in-diesel drain in Hillside? Our engineers cannot put one price on this page truthfully, as this job is not one job. What moves it: - Has it been run or driven? Nothing else matters for as much. - Wrong fuel in, against what your tank holds — that ratio. - The kind of liquid in the tank, unleaded or AdBlue. - Whether our van can sensibly get to the vehicle and work on it, which depends on where the vehicle is. Tell us your vehicle, the quantity and if it has run, and you'll get a straight answer instead of a range. If it is not urgent — your car is at home and going nowhere — is fine too. ## Hillside motorists ask us these about petrol in diesel ## At a petrol station in Hillside, can you do a fuel drain there? Yes — forecourts are where a big share of this happens. Tell us which one you're at when you phone and we will tell you whether we can work there. With the owner's permission our engineers attend BP and the other forecourts around town routinely. ## How much petrol in a diesel is too much? Whether your engine has run matters a lot more, though the proportion counts too, instead of the litres. Five litres in an almost empty tank is a separate situation from five in a full one — but either way, the thing that decides how much work is required is if that blend has been sucked through the system. ## I put petrol in my diesel and drove the car. What now? 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 a lot more often than motorists fear. ## Will a fuel drain void my warranty? No. Carried out properly, clearing and rinsing is no alteration at all, and the warranty from your manufacturer is unaffected by it. What is likelier to start an argument is a diesel that has been run on petrol. One more good reason for the engine to stay off. ## Two-stroke oil in that tank, and then home? No. It belongs to a separate issue from a different era, and petrol has diluted something no oil of that kind replaces. After that? Still petrol in your tank, and a pump that has to put up with the stuff. ## Do I need a main dealer for petrol in a diesel? Wherever your car is, our engineers drain and clean it there, so a trip to the main dealer does not come into it. ## Is the vehicle still with you? Switched off is how it remains. Driven it already? Then somewhere safe, stop, switch off, and no restarting it later on. A stationary, cold vehicle is the best place to be in, and this is recoverable from a lot more often than drivers assume. Draining wrongly fuelled vehicles, Hillside and the rest of Somerset, wherever they are. Roadside. Forecourt. Home.