--- title: Petrol in a Diesel Car in Bishop Sutton? — Fuel Drain canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/bishop-sutton-somerset/ location: Bishop Sutton county: Somerset latitude: 51.335290 longitude: -2.594490 service: Petrol in a Diesel Car updated: 2026-10-16 --- # Put Petrol in a Diesel Car in Bishop Sutton? With your tank still holding the fuel and the engine not yet run, nearly every job requires only a drain, so keep the motor off. That outcome is determined in the minutes immediately after filling up, and not by the amount that went in. All over Bishop Sutton and the remainder of Somerset, Petrol in Diesel drains the car and flushes it where it is, whether by a roadside, on a driveway or at a forecourt. A single ring our way will be plenty: our technicians shall show you what happens after this. Try that first. ## What now? Petrol in a diesel, step by step - Feed a petrol motor diesel and it will usually not run at all, and so the driver stops there and so does the damage. Give a diesel petrol and the engine starts, it idles, it moves off — all right for a couple of miles. Most people have that backwards, which is the bit they get wrong about petrol in a diesel especially. So do not crank it. And having started, don't believe it: your fuel system is grinding while you drive. - Switching the car's ignition on often primes that system, and priming is what moves petrol out of your tank and into the pump and injectors. Those are the components diesel keeps protected on its way through, before it ignites. Petrol manages the burning and none of the lubricating. Leave the ignition alone. - Topping up takes out nothing. It gives you a larger tank of the same mixture, since a diesel fuel system doesn't accept petrol by percentage the way that advice suggests — so don't pour diesel on top to thin it. Type is irrelevant too: super unleaded is petrol. - Remain where you are if you reasonably can. A vehicle that has never moved is the simplest one to deal with, and we'd much rather drive to an awkward location than have it started. If you're stopped on the verge on Ham Lane, switch the hazards on then keep the vehicle there. - A van turning up rather than circling hinges on two things: a postcode starting BS39 5, and whatever is next to you with a sign on it. Get both prepared before you call. - What got in, approximately how much, plus if the motor has started — those three details settle the whole visit. Dial 0333 366 0103 then tell us. The drive back would about double it, for no gain at all. One commute has already forced a real load of petrol-thinned diesel through your high-pressure pump of your Skoda Octavia. So leave the vehicle where it sits. Ring us from the platform if that's quicker — nobody needs you standing over the vehicle at Parson Street while our technicians get on, and tonight beats finding out on Monday. ## Can petrol be drained from your diesel on a forecourt? Pumps are where the job mostly begins, and where a large part of that ends. If you are still at the forecourt at Texaco, that is generally where the drain gets done — we operate on station forecourts all the time, with the site's permission. A forecourt is the single location this is spotted before the motor has fired. Fuel pulled out of that tank and through your filter, all the way to your high-pressure pump, is what occurs when your engine is switched on and your car is driven to where it is now: the car park, the private drive or the lay-by, everywhere other than the forecourt. So the flush includes your filter and your lines along with the tank. That is still not a catastrophe, and we deal with it where the car stands. What decides it is whether the key was turned in the seconds after the receipt was checked. Wheel the vehicle out of the way if the staff suggest it, and they usually will. The next customer gets past the pump, and that is worth doing. Four vehicle lengths is not worth a start. Simple, these ones, and the reason is the mileage: a mile at light throttle uses little fuel. Petrol into a diesel BMW 3 Series somewhere around Bishop Sutton, a boot loaded with shopping, and you stranded outside The Co-operative Food — call us. Exiting the spot isn't worth another start. Your tank gets emptied where it waits, the fuel lines rinsed, new diesel in, and you get home. ## Can we serve your part of Bishop Sutton? As a village, Bishop Sutton gets a routine call, while the places round about come along on the same trip: Hollow Brook and Stowey, Golds Cross and Newtown, Sutton Wick. If yours isn't on this list that does not mean we do not come — there are pages for most places across Somerset, and the ones named above are merely the immediate neighbours. Assuming is the habit to resist, especially on a boundary or somewhere a satnav goes wrong. Contact us to check. This map marks the ground this page includes. All of that is territory we work: a kerbside, a forecourt, a private drive, a car park. You never bring the car anywhere. ## Bishop Sutton: stranded wherever you stopped Not everyone gets a suitable place to pull in. If you worked it out after setting off and finished up along the verge on Sutton Hill Road, or in a lay-by somewhere with your hazards going, that is a routine call for us instead of a rare one. Out of the car if it's not wise to wait inside, by it when it is. Do not restart your engine to limp the vehicle somewhere better — a diesel running on petrol will frequently oblige, and every mile it obliges for is drawing the mix further into the fuel system. We will bring the van to a tricky place without any trouble, and for your car that's a lot better than driving on. ## So you've driven it? Petrol in a diesel after a couple of miles Here is where the M32 matters, under 10 miles out of Bishop Sutton. A drop in power, a lumpy idle, some smoke: those are the symptoms when they arrive, rather than a tidy stop — and a wrongly fuelled diesel will usually get you onto it and some way along before anything seems wrong at all. The next safe junction is the one to take. Turn off there, and leave the restarting alone. Presume the worst of that on a long trip. Anything near the under 10 miles to the nearest city, and the petrol has been through your filter, through your pump, through the injectors. Say so when you phone. What we bring changes. Out there happy, back gutless. If that was the trip to Strawberry Wood, look at that tank. Diesel gets weakened by petrol, and thin fuel slips past the fine gaps supposed to build injection pressure — so every additional mile your diesel Mercedes C-Class covered, the less pressure it held onto. Somewhere sensible, switch off, phone us. ## A little about Bishop Sutton Bishop Sutton is a village situated on the shores of Chew Valley Lake in Somerset, with a mix of rural and lakeside scenery. Bishop Sutton has a population of around 1424 people and is characterized by predominantly detached housing. Bishop Sutton is located near several other small settlements, including Hollow Brook, Stowey, and Golds Cross, and is approximately 8 miles from Bristol. Bishop Sutton sits at an elevation of 68 metres above sea level, in a scenic area popular for outdoor activities. ## What our engineers do when our technicians arrive with you in Bishop Sutton - Three things get asked before any price — your fuel that went in, the quantity, and whether anything has been run since. Each answer shapes the work. - Away comes the polluted mixture. - Our engineers purge the lines and clear your filter, and so what's left in the system isn't what caused the trouble. - Fresh diesel goes in, and then your system gets primed. - When it's fired up, our engineers make sure it runs smoothly on clean diesel. That leaves it ready to pull away. Everything is done where the car is, so it never has to be taken to a garage, and when it has been caught early, lasting damage is very uncommon. ## Bishop Sutton AdBlue removal is a separate problem The issue isn't the same, though the first rule is — do not start it — if what was put in was AdBlue instead of petrol. Petrol does two things to diesel: thins it, and strips out the protection the fuel system relies on. AdBlue is urea in water, and in a diesel tank it leads to corrosion and deposits in its place. Both are ours. There is a separate Bishop Sutton page for AdBlue removal, with the full story on it — including the reasons it often turns out to be the worse of the two. Rattling, a lumpy idle, white smoke, a throttle gone limp. That's a misfilled diesel Renault Captur telling you what's wrong. Switch off where you have stopped, close to Holy Trinity or anywhere else, and don't start it to find a better place. ## How much is a petrol-in-diesel drain around Bishop Sutton? We can't put one figure on this page truthfully, as this job is not one job. What moves it: - Has it been started or driven? Nothing else counts for as much. - Wrong fuel in, against what the tank holds — that ratio. - Which went in: unleaded or AdBlue. - Where is it? And can a technician get to it and work there sensibly? The car, the quantity, whether it has run — give us those and the answer comes back clear rather than as a range. For the car at home that's going nowhere and is not time-critical, is fine too. It got a few streets and stopped. The throttle went limp, the idle turned uneven, and the diesel Citroen C4 Picasso is now sitting by Bishop Sutton Village Hall. That sluggishness is your fuel failing to build pressure fully rather than the engine packing up — and as there's no dashboard light for it, vehicles in that position usually get driven again before anyone phones. Do not. Turn it off and phone us. ## Questions our engineers get about petrol in diesel around Bishop Sutton ## At a petrol station in Bishop Sutton, can you do a fuel drain there? Much of what our technicians do takes place nowhere else. So yes. Often, provided the site consents: Esso, plus every other forecourt nearby. Say on the phone where precisely you have stopped. Whether we can work in that location is something we answer on the spot. ## How much petrol is too much for a diesel? Whether the motor has run counts much more, though the ratio matters too, rather than the litres. Five litres into a nearly dry tank isn't five into a full one, no. But both land on the same query in the end: has that mix been drawn right through, or has it not? ## Already driven it with petrol in your diesel? What then? Stop safely. Off. Nothing after that. Driving is what shifts the issue from that tank into your pump and injectors — but it's salvageable a lot more commonly than people assume, and the single most helpful thing you can do now isn't restart it. ## Fuel drains and manufacturer warranties It isn't an alteration, and so a drain then flush carried out properly does not invalidate a manufacturer's warranty. Running a diesel on petrol is the thing more likely to cause a disagreement with one, which is another reason to leave it switched off. ## Two-stroke oil in your tank, and then home? Two-stroke oil solves a distinct issue, and an old one at that. Nothing it does puts back what petrol weakened. No. That tank still has petrol in it later on, and your pump still has to put up with it. ## Do I need a main dealer for petrol in a diesel? There's no need to bring it to a main dealer, as our engineers drain and clean the vehicle wherever it is. ## Waiting next to it? Keep it switched off. If you have already driven it, pull in somewhere safe, switch it off then keep it off. Cold, parked, going nowhere: that's the best place to be in. People fear this far more than they need to. Mobile fuel draining around Bishop Sutton and throughout Somerset — at the kerbside, on the forecourt or at home.