--- title: Petrol in a Diesel Car Mellishes Bottom — Fuel Drain canonical: https://www.petrolinadieselcar.co.uk/petrol-in-diesel/mellishes-bottom-hampshire/ location: Mellishes Bottom county: Hampshire latitude: 50.894040 longitude: -1.157760 service: Petrol in a Diesel Car updated: 2026-10-10 --- # Put Petrol in a Diesel Car in Mellishes Bottom? Don't Start It If you have not fired up your engine as yet, don't. A fuel drain and nothing else is nearly always what a motor requires while the fuel is still in that tank and your engine has not turned over, which is why it is the next few minutes that count, not how much went in. Petrol in Diesel comes to the car wherever it has stopped in Mellishes Bottom or the remainder of Hampshire, on the forecourt, at the roadside or on a private drive, and drains and cleans it there. Our technicians shall tell you what the next step will be. Phone — it happens before all else. ## Your next five minutes: petrol in a diesel - Do not fire it up. Started anyway? Then never depend on it. Diesel in a petrol motor usually can't run, so the driver stops and the harm halts with them. Petrol in a diesel? It starts. It ticks over. It moves off normally, for a few miles. Most people get that muddled. It is not fine — the fuel system is wearing every mile you cover. - Flicking your ignition on usually primes your system, and priming is what moves petrol out of that tank then into your pump and injectors. Those are the components diesel keeps lubricated on its way through, before it ignites. Petrol does the burning and none of the oiling. Leave the car's ignition alone. - Never dilute it. Diesel tipped on top removes nothing, and so all you get is more of what was already there, because percentage is not how a diesel fuel system copes with petrol. Super unleaded? Simply petrol. The type makes no difference. - Stay where you are if you safely can. A motor that has not shifted is the simplest one to sort out, and we'd much rather come to a tricky place than have it started. If you are stopped on the verge on Hundred Acres Road, turn the hazards on then keep the vehicle there. - Get your location prepared before you ring. A postcode beginning PO17 6 and whatever is next to you with a sign on it is the difference between the van arriving and a van circling. - Call 0333 366 0103. Anticipate three points — what went in, roughly how much, and if the motor has been started. The replies shape everything that follows. The run in is what pushed diluted diesel through the pump. Sitting still has pushed nothing. Petrol in a diesel Volkswagen Passat, left outside Fareham all day, rests inert in that tank whilst it waits. Phone us first — before the keys go in. ## At the forecourt: draining petrol from a diesel Much of this job begins at a pump, which means a fair share of that gets completed there. If you're still at the forecourt at Shell, that's generally where the drain gets done — we work on garage forecourts routinely, with the station's agreement. Before your motor has run — the forecourt is the single location this ends up stopped. Our engineers can still put it right where it stands, even away from the pumps. In a car park, on a driveway or in a lay-by, your car has been fired up and driven there, and that drew fuel through the fuel filter and into the high-pressure pump, right from the tank. None of that is a catastrophe, though the flush then has to reach past the tank to your lines and the filter, and the few seconds between reading your receipt and going for your key are what determine that. Clear of the petrol pump, the next customer can get by — so yes, let the staff help you wheel the vehicle. Very much worth it. Starting it for four car lengths? Not a chance. Straightforward, these ones, and the reason is the miles: a mile at easy throttle pulls little fuel. Petrol into a diesel Renault Clio somewhere around Mellishes Bottom, a boot full of shopping, and you stuck outside Sainsbury's — phone us. Leaving that spot is never worth a restart. That tank gets cleared where it sits, the lines rinsed, clean diesel in, and you drive home. ## Parts we serve near Mellishes Bottom Mellishes Bottom is a rural hamlet, and so our technicians head out to the town and to the areas by it on the same journeys: Hundred Acres, North Boarhunt, Wickham Common, Crockerhill and Wickham. Our engineers do come. Those places above are merely the closest neighbours, and a page exists for nearly all locations across Hampshire, and so an absence from the list is not an absence from our coverage. On a border, or somewhere the satnav can't find? Ring us and enquire instead of assuming. The map outlines the patch the page covers. Roadside, forecourt, drive, car park: every bit of it is territory our engineers serve, and none of it requires your vehicle to come to us. ## Stranded on the kerb somewhere around Mellishes Bottom? Not everyone has a chance to pull in anywhere sensible. Set off, then twigged? Ended up by the verge of Firgrove Lane, or sat in some lay-by with the hazards going? That's a normal call here. Not a rare one. Whether you remain beside the vehicle or keep clear of it turns on if staying there is safe. It will often oblige. A diesel running on petrol limps along quite willingly, and that is the trouble: restart it to get to somewhere safer and that blend goes further into the fuel system with every mile travelled. Carrying on does the car far more harm than a technician coming out to a difficult location, and that is no trouble for us. You head off at the end, once our technicians have started the engine and confirmed it runs smoothly on fresh diesel, with your system bled. Before that, in the car park at the pub in the village, the polluted fuel comes out of your tank, your lines get cleaned and the filter comes off where your Peugeot 3008 has a serviceable one. It all begins with three questions when our technicians get to the car: what was put in, how much of it, and whether it has been started since. ## Run it already? Pull in, then check this This is where the local M27 comes in, under 3 miles out of Mellishes Bottom. Some way along, and onto it in the first place: a misfilled diesel will frequently manage both before anything feels wrong. What you get then is seldom a clean stop. Power drains away, the idle goes uneven, and there may be smoke. Take the first junction that is safe, pull up there, and never restart the car to reposition. Long drive? Anything near the under 10 miles to the closest city and you should presume the lot — filter, pump, injectors, all of it reached by the petrol. Say that on the call, as it alters what goes in our van. Your pump isn't turning, so whatever your diesel Audi A3 did on the way to Wickham Common, none of that is going on now. Nothing is getting worse while it stands. Take your time over this — but never drive it home to buy any. ## Where is Mellishes Bottom? Mellishes Bottom is a small hamlet in Hampshire, situated inland at an elevation of 46 metres, approximately 7.3 miles from Portsmouth. Mellishes Bottom lies near other local places such as Hundred Acres and North Boarhunt, and is characterized by its predominantly detached housing. Mellishes Bottom is a relatively small community, with around 550 residents, and is located within the South East region of England, about 61.5 miles from London. ## Once we get to you around Mellishes Bottom: what follows - The replies shape the work, which is why our technicians ask before pricing: what got in, how much of that, and whether the engine has run. - We drain that tank of the tainted mixture. - Our technicians purge your fuel lines and clean your filter, and so what's remaining in your system isn't what caused the trouble. - Your system gets primed, on new diesel. - Our engineers turn it on and make sure it runs smoothly on fresh diesel. That has the car ready to set off. There is no need to go to a garage at any point, as the work is all done where your car is, and when it's noticed soon, permanent damage is very uncommon. ## A different job: AdBlue in a diesel tank around Mellishes Bottom The issue is not the same, though the opening rule is — don't crank it — if what got in was AdBlue rather than petrol. The protection a fuel system depends on is stripped away by petrol, which thins your diesel. AdBlue? Urea dissolved in water. Put that in with your diesel and you get rust instead, plus residue. Our technicians handle both, and AdBlue removal around Mellishes Bottom has its own page with the details — including why it is usually the more significant of the two. Clattering? Uneven idle? White smoke, throttle gone soft? That is your misfuelled Vauxhall Astra, a diesel, saying what's wrong with it. Stop wherever you happen to be, possibly near Saint Nicholas, and leave the restarting alone. ## Mellishes Bottom costs for a petrol-in-diesel fuel drain Truthfully, no single number belongs on a page like this. The job differs. Here is what moves it: - This is the big one: whether your motor has been run, or driven. - How much of the wrong fuel went in, against how much the tank holds. - AdBlue or unleaded, whichever got in. - Where is it? And can a technician reach it and work there sensibly? Tell us your car, the quantity and whether it has run, and you will get a clear answer rather than a range. For the car at home that is going nowhere and isn't pressing, works too. ## Petrol in diesel: frequent questions in Mellishes Bottom ## Fuel drains on a Mellishes Bottom petrol station forecourt Plenty of what we do gets done nowhere else. So yes. Tell us which one you are at when you call and we will tell you whether our engineers can work there. With the station's agreement our technicians visit Sainsbury's and the other forecourts locally regularly. ## Is there a safe quantity of petrol in a diesel? Litres aren't the yardstick. Proportion is, and far more than either, it matters if anything has been run. What settles how much work is needed is whether that mix has been sucked through the fuel system — because even though five litres in an almost empty tank is a distinct matter from five in a full one, either way that is the query. ## I put petrol in my diesel and drove it. What now? Pull over somewhere sensible, switch off, then leave it off. Not restarting it is the single most valuable thing available to you now. Driving does shift the issue out of that tank then into the pump and injectors, yes, and it remains recoverable far more frequently than drivers fear. ## Fuel drains and manufacturer warranties No. Carried out properly, emptying and rinsing is no modification at all, and the warranty from your manufacturer is untouched by it. What is likelier to start an argument is a diesel that has been run on petrol. One more good reason for your 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 restores. Petrol remains in that tank later, whatever else goes in, and your pump gets no break from it. ## Does petrol in a diesel have to go to a main dealer? Wherever the vehicle is, our engineers drain and flush it there, so a trip to the main dealer does not come into it. ## You, and your vehicle, still together? Your engine remains off. Switch it off somewhere safe and keep it off, if you have already driven it. Cold and still, a motor is in the best position available — and motorists fear this a lot more than the recovery rate warrants. Call-out fuel draining around Mellishes Bottom and across Hampshire — at the kerbside, on the forecourt or at home.