--- title: Petrol in a Diesel Car in Walkleywood? — Fuel Drain canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/walkleywood-gloucestershire/ location: Walkleywood county: Gloucestershire latitude: 51.692280 longitude: -2.225360 service: Petrol in a Diesel Car updated: 2026-10-09 --- # Walkleywood: Put Petrol in a Diesel Car? Petrol in Diesel drains and flushes wrongly fuelled cars where they stand, on the forecourt, at the roadside or on a private drive, across Walkleywood and the rest of Gloucestershire. The very first thing to do is not to start the motor. When your engine has not been started and the petrol is still in your tank, a fuel drain is nearly always all it requires, and the coming few minutes settle that, not how much was put in. A single ring to us will be plenty: we shall explain what comes after this. Try that straight away. ## What to do next about petrol in a diesel - Feed a petrol motor diesel and it will usually fail to run at all, so the motorist stops there and so does the wear. Feed a diesel petrol and the engine starts, it ticks over, it drives off — fine enough for a few miles. Drivers have that reversed, which is the thing they get wrong about petrol in a diesel specifically. So never fire it up. And if started, do not rely on it: that fuel system is grinding whenever you drive. - Two tasks, diesel: it combusts, and on the way through it keeps your high-pressure pump and injectors protected. Petrol only does the one. Which is why your ignition stays off also — turn it on and you often prime your system, and that's petrol exiting your tank for just those parts. - That advice assumes a diesel fuel system tolerates petrol by percentage. It does not. Pour diesel on top and nothing at all is cleared; what you have is a larger tank of the same mix. And no, the type makes no difference — super unleaded is still petrol. - A car that hasn't shifted is the simplest one to sort out, so wait where you are if you reasonably can. Parked on the verge on Meadow Bank? Hazards on, and keep the car there. A tricky location suits us better than a started motor. - Get your whereabouts prepared before you dial. A postcode starting GL6 0 and whatever is nearest to you with a name on it is the difference between the van arriving and our van circling. - Phone 0333 366 0103. Say what got in, approximately how many litres, and also whether the car has started. Those three answers determine the full job. Quarter past eight, a hurried fill-up on the drive in, and it dawns on you at about eleven — by which time the diesel Volkswagen Passat has been parked outside Stroud for three hours. Phone and leave it precisely where it sits. The journey in is the thing that is key here, as diesel does two tasks on its way through a motor: it ignites, and before it ignites it greases that injection pump and its injectors. Petrol does the first and not the second. So those couple of miles were driven with your pump working on a fuel that had lost much of the protection it is built around — which is why the thing we ask is how far you went, not how long your motor has been standing. ## Draining petrol from the diesel at the forecourt A big share of this job is completed at the pump, because that is where it mostly begins. We work on station forecourts all the time, with the station's permission, and so if you're still at Shell that is normally where this drain gets done. Before the engine has fired — a garage is the only place it is halted. Fuel drawn out of the tank and through the filter, right to the high-pressure fuel pump, is what occurs when your engine is switched on and the vehicle is driven to where it is now: the car park, the drive or the lay-by, everywhere other than the forecourt. So the flush includes your filter and the fuel lines as well as the tank. That's still not a disaster, and we deal with it where the vehicle is. What settles it is whether the key was turned in the seconds after the receipt was read. Away from the petrol pump, the next driver can get by — so yes, let the attendants help you roll it. Very much worth doing. Four vehicle lengths isn't worth the risk. Diesel Peugeot 308. A few litres of unleaded. Done a couple of miles. Switched off now, outside Morrisons. That's the call we hope for, as the point under it is about amount through your pump not hours on the clock. ## Coverage in Walkleywood Walkleywood is a residential suburb, so we are out to the town and to the villages around it on those same rounds: Millbottom, Rockness, Worley, Nailsworth and Shortwood. Not on the list? It says nothing. The places above are simply the closest few, and nearly all places in Gloucestershire have a page of their own somewhere on the site. Ring us to check rather than guessing — borders particularly, and anywhere a satnav can misread. This map shows the area the page spans. The lot is ground our engineers cover: a roadside, a forecourt, a driveway, a car park. You never move your car anywhere. ## Stuck at the kerbside in Walkleywood Not everybody gets the chance to stop somewhere suitable. Set off, then twigged? Ended up along the verge on Rockness Hill, or parked in some lay-by with the hazards flashing? That's a common call here. Not an odd one. Out of the motor if it is not sensible to sit in it, with it if it is. Don't start it up to get to a better spot. It will go — a diesel on petrol normally obliges — and each mile of obliging draws the mixture deeper into your fuel system. A technician heading to an awkward spot is no bother for us, and it is a lot better for your car than driving on. The components that should be getting oiled are wearing instead, and your motor gives no sign of that: a diesel on a thinned tank starts and moves off quite happily. Try the journey home from Britannia Inn? No. Ring us then leave the Dacia Duster where it sits. ## A couple of miles on petrol in a diesel: now what? This is where your M5 matters, under 10 miles away from Walkleywood. It will usually get you onto it, and some way along, before you spot a thing. Then it is smoke, an uneven idle and power draining away — not a tidy stop. Misfuelled diesels seldom give you one of those. The first sensible junction is the one to take. Switch off there, and leave the restarting alone. It affects what our engineers bring, so tell us when you call: on a longer trip — anything near the under 15 miles to the closest city — take it the mixture has been through the filter, your pump and the injectors. The pump is not turning, and so whatever your diesel BMW 1 Series did on the way to Queen Elizabeth Field, none of it is happening now. Nothing is getting worse whilst it sits. Take your time over this — but never drive it home to buy any. ## About Walkleywood Walkleywood is a suburban area situated on the riverside in Gloucestershire, with an elevation of around 95 metres. Walkleywood lies near several smaller communities, including Millbottom, Rockness, and Worley, and is approximately 11.9 miles from Gloucester. Walkleywood has a population of around 3063 people and is characterised by predominantly detached housing. Walkleywood is also within commuting distance of larger cities, being around 90.9 miles from London. ## Once our engineers get to you in Walkleywood: what happens - Three things get asked before any quote — your fuel that got in, the amount, and if anything has been run since. Each answer alters the work. - Your tank gets emptied of everything. - We purge your fuel lines and clear the fuel filter, so what's remaining in the system is not what caused the problem. - Our engineers put new diesel in and bleed your system. - Your engine is fired up and checked to confirm it runs smoothly on clean diesel. The vehicle is then ready for you to pull away. All of this is done where the vehicle is, so it never needs to go to a garage, and when it has been caught soon, lasting damage is very unusual. ## AdBlue in the diesel tank instead, around Walkleywood? AdBlue instead of petrol? Then the first rule is unchanged — your engine stays off — while this issue beneath it is a different one altogether. Petrol thins your diesel and removes the lubrication your fuel system relies on. AdBlue? Urea dissolved in water. Put that in with your diesel and you get rust instead, plus build-up. AdBlue removal in Walkleywood has a page of its own with the full story on it, including why it's frequently the more significant of the two. We cover both. ## Paying for a petrol-in-diesel drain in Walkleywood One figure would not be honest here, as this is not one job. These are the things that move it: - Started? Driven? Either answer counts more than anything else on this list. - How much of the wrong fuel was put in, judged against how much the tank holds. - The sort of fluid in the tank, unleaded or AdBlue. - Access: the car's position, and if working on it there's safe for a technician. A straight answer rather than a range is what you get for telling us three things: your vehicle, the amount, and whether it has run. For the vehicle at home that is going nowhere and isn't urgent, is fine too. A few streets, then it stopped. Throttle dead, idle uneven, and your diesel Vauxhall Insignia is parked up near Nailsworth Town Hall. The engine isn't packing up — that deadness is fuel that will not build pressure. There is no light on the dash for it, and so motors like yours normally get driven again before anybody picks up the phone. Don't. Off, then ring us. ## Walkleywood motorists ask us these about petrol in diesel ## I am on a forecourt in Walkleywood. Can you drain the car on the spot? Yes, and it is where a big portion of this work 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 agreement our engineers visit BP and the other forecourts locally regularly. ## Is there a safe amount of petrol in a diesel? Proportion decides it instead of litres — and more than either, whether your engine has run. An almost empty tank with five litres in it, against a full one with the same five: separate scenarios, definitely. Either way, the work required comes down to one thing, which is if the system has had that blend sucked through it. ## Already driven it with petrol in the diesel? Now what? Somewhere sensible, then stop, then switch off and keep it off. It's fixable far more often than people assume, even though driving is what moves the problem from your tank into your pump and injectors — and the single most useful thing you can do now isn't restart it. ## Is a fuel drain going to void my warranty? It isn't an alteration, and so a drain and flush carried out properly doesn't cancel a manufacturer's warranty. Running a diesel on petrol is the thing more likely to cause an argument with one, which is another good reason to leave the car turned off. ## Can I just add two-stroke oil and drive home? No. Two-stroke oil is an old fix for a separate issue and it doesn't put back what petrol has weakened. Petrol remains in that tank after that, whatever else goes in, and the pump gets no respite from it. ## A main dealer for petrol in a diesel — needed? There is no need to take it to a main dealer, as our engineers drain and clean the car wherever it is. ## Is your vehicle still with you? Switched off is how the car stays. Switch it off somewhere safe then leave it off, if you have already driven it. Cold, parked, going nowhere: that's the best position to be in. Motorists fear this a lot more than they need to. Throughout Gloucestershire and in Walkleywood: on-site fuel draining, at home or on the forecourt or at the roadside.