Put Petrol in a Diesel Car in Longburton? Don't Start It
With the tank still carrying the petrol and the engine not yet turned over, almost every job takes only a drain, so leave the engine off. That result is determined in the minutes immediately after the fill-up, and not by the amount that was put in. All over Longburton and the rest of Dorset, Petrol in Diesel drains the vehicle and cleans it where it sits, whether by a roadside, on a drive or at a forecourt. Ring us before everything else happens, and you'll know what comes after that.
What now? Petrol in a diesel, in turn
- Never fire it up — and don't rely on it if it runs. Here is the part people get wrong about petrol in a diesel especially. A petrol motor given diesel generally just cannot run, so the driver stops and the wear halts with them. A diesel filled with petrol usually starts, ticks over and moves off just fine for a few miles. It's not okay. It's grinding that fuel system as you drive.
- Two jobs, diesel: it combusts, and on the way through it keeps your high-pressure fuel pump and injectors greased. Petrol only manages the one. That is why your ignition is left off as well — flick it on and you often prime the system, and that's petrol leaving the tank for exactly those parts.
- Topping up clears nothing. It hands you a fuller tank of the same mixture, since a diesel fuel system does not cope with petrol by percentage the way that guidance implies — so do not add diesel on top to thin it. Grade is beside the point too: super unleaded is petrol.
- Sit tight if it's sensible to. Hazards on, ignition off, leave it. Wherever you have stopped — the verge on New Cross, anywhere — an awkward location for us is better than a started engine, and nothing is easier for us to handle than a motor that never shifted.
- Get your location prepared before you call. A postcode that starts DT9 6 and whatever is closest to you with a sign on it is the difference between our van showing up and our van circling.
- Three answers determine the entire job: the fuel you poured in, the rough amount involved, plus if anything has been running since. Our line is 0333 366 0103.
Phone us before you collect the car. Petrol into a diesel Renault Megane this morning, and it outside Sherborne ever since? Then the wait has taken nothing from you: fuel in a tank is dormant, and any damage was done on the journey in, when your pump was pulling diesel that petrol had weakened.
Nothing alerts you, because from the driver's seat there is nothing to be warned about. Your diesel Audi A4 will have felt entirely ordinary on the way back from Sherborne Abbey Church of England Primary School, and they all do — which is the snag with petrol in a diesel and not the reverse. Diesel in a petrol motor mostly refuses to run, stopping the driver and stopping the wear with them. Petrol in a diesel starts, ticks over, drives off as though nothing had happened, and all the while your pump keeps working without the protection its fuel is meant to supply. Tell us about how far, and how hard. The harder matters more.
A diesel Mercedes C-Class in the parking area by Rose & Crown carrying a tank full of petrol in it is a simple job, right up till somebody takes it home. Leave it there overnight then call us first thing. Nothing degrades as it stands. What our technicians will ask is if that trip there was brief and cold, since that's where petrol is least able to burn correctly — and anything that does not burn can work past the rings then into the engine oil.
Pull over somewhere sensible, turn off and ring us. Happy on the way out to Folke Wood, flat on the way back? Then look at that tank. Petrol dilutes diesel; weaker fuel slips past the close-fitting components that build injection pressure; and the farther your diesel BMW 5 Series drove, the less of that pressure it held.
Three things help when you ring from near Church of St James the Great: which side the filler is on, whether a van can park alongside without blocking the road, and if your engine has run since you filled up. On-street is the commonest spot our engineers work, so the spot itself is seldom the problem — we'd much rather deal with a narrow parking space than with a vehicle that has been driven to somewhere more convenient. We'll drain your Ford Kuga, change your filter where there's a workable one, flush your lines then put fresh fuel through the full circuit, because by this point the worst of that is waiting in your lines instead of in your tank.
Draining petrol from the diesel at the forecourt
Forecourts are where this work usually begins, and where a good share of it closes. The drain typically takes place right there. Still on the forecourt at BP? Given the station's consent, that's somewhere our technicians work, and often.
Nowhere but a forecourt can the mistake be halted with the motor still untouched. We can still deal with it where it sits, even away from the pumps. In a car park, on a private drive or in a lay-by, the vehicle has been started and moved there, and that drew fuel through the filter and into the high-pressure pump, right from your tank. None of that is a disaster, although the flush then has to reach past the tank to your lines and your filter, and the few seconds between seeing the till receipt and going for the keys are what settle that.
The staff will generally help you wheel it clear of the petrol pump so the next motorist can get by. That is worth doing. Four vehicle lengths isn't worth a start.
Coverage around Longburton
Longburton is a rural village, so our vans go out to it and to anywhere around it on the usual runs: Leweston, Folke, North Wootton, Lillington and Alweston.
If yours is not on that list that does not mean we do not come — there are separate pages for nearly all locations across Dorset, and the ones listed above are simply the nearest neighbours. Phone to ask instead of guessing, particularly where you are on a border or anywhere the satnav misreads.
The area this page covers is on our map. Your vehicle never needs to come to us. We work throughout the lot — roadside, forecourts, driveways, car parks.
Kerbside call-outs in Longburton
Not everybody finds a sensible spot to pull in. A routine call for us instead of an unusual one: noticed after setting off, landed along the verge beside Dyke Head or in a lay-by with the hazards going.
Stay beside the car while it's safe to wait inside, yet clear of the car if it's not. Do not start it up to get to a nicer spot. It'll go — a diesel on petrol usually obliges — and each mile of obliging drags that mix deeper into the system. Carrying on causes the car far more harm than a van coming out to an awkward place, and that's no problem for us.
Petrol in a diesel, and the vehicle has travelled
The local M5 is the road that matters now, and it runs under 25 miles from Longburton. A loss of power, a rough idle, smoke: those are the signs when they come, rather than a tidy stop — and a misfuelled diesel will often get you onto it and some distance along before anything feels wrong at all.
Pull off at the next safe junction, switch off, and do not restart the car to move it. Long trip? Anything close to the under 25 miles to the closest city and you should assume the lot — filter, pump, injectors, all of it reached by the petrol. Say that on the call, since it affects what goes in the van.
A little about Longburton
Longburton is a small village in Dorset, situated inland at an elevation of around 110 metres. Longburton lies near the villages of Leweston, Folke, and North Wootton, and is approximately 21 miles from the city of Wells. Longburton has a population of around 525 people and is characterised by predominantly detached housing.
What we do when our engineers arrive with you around Longburton
- Three things get established before any price — your fuel that was put in, the quantity, and if anything has been run since. Each answer alters the work.
- The contaminated fuel is drawn from that tank.
- What is left in the system shouldn't be what caused the trouble, and so your fuel lines get rinsed and your filter cleaned.
- Priming follows, once fresh diesel is in.
- We turn it on and confirm it runs correctly on clean diesel.
From there, you're ready to pull away. There is no need for a garage at any stage, since the work is all done where the vehicle is, and when it is spotted soon, long-term damage is very rare.
A distinct matter: AdBlue in a diesel tank in Longburton
AdBlue rather than petrol? Then the first instruction is unchanged — the engine remains off — whereas this problem beneath it is a separate one altogether. Thinned diesel, and no lubrication left for your fuel system that relies on it. That's petrol. AdBlue? Urea dissolved in water. Tip that in with your diesel and you get rust instead, plus build-up.
Our engineers deal with both, and AdBlue removal in Longburton has its own page with the full story — including why it is frequently the more serious of the two.
What a petrol-in-diesel fuel drain costs around Longburton
Our engineers can't put one price on this page truthfully, since the job is not one job. What changes it:
- Started? Driven? Either answer matters more than anything else on this list.
- How much of the wrong fuel got in, set against how much the tank can hold.
- Whether it's petrol or AdBlue.
- Whether a van can sensibly reach the car and work on it, which hinges on where your car is.
Tell us the vehicle, the amount and whether it has run, and you'll get a straight answer instead of a range. Not urgent, with the car at home and going nowhere? Then does the job.
Petrol in diesel questions from Longburton drivers
I'm on a forecourt in Longburton. Can you drain it here?
Yes, and it is where a good share of this work gets done. Agreement from the site is the condition. Given that, a forecourt like Murco is somewhere we are regularly, along with the rest of them locally — so name yours on the call and you'll hear whether working there is possible.
Is there a safe quantity of petrol in a diesel?
Ratio settles it instead of litres — and more than either, whether your motor has run. 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 blend been sucked right through, or has it not?
Petrol in my diesel, and I have driven the vehicle
Stop safely. Off. Nothing after that. Driving shifts the issue along — out of that tank, into your pump and injectors. Drivers fear it a good deal more than the recovery rate warrants, mind. The one genuinely useful thing left to you isn't restarting the car.
Is a fuel drain going to void my warranty?
A drain and flush carried out correctly isn't a modification and does not cancel a manufacturer's warranty. A disagreement over a warranty is likelier to come from running a diesel on petrol — so leave it switched off.
Adding two-stroke oil, then driving home
No. It belongs to a different fault from a bygone era, and petrol has weakened something no oil of that kind replaces. Afterwards? Still petrol in the tank, and a pump that has to cope with the stuff.
Do I need a main dealer for petrol in a diesel?
Wherever the vehicle is, we drain and flush it there, so a drive to the main dealer doesn't come into it.
Is the vehicle still with you?
The motor stays off.
If you have already driven the vehicle, stop somewhere safe, switch it off and keep it off. Cold and still, a car is in the best place available — and people fear this far more than the recovery rate warrants.
Across Dorset and in Longburton: on-site fuel draining, at home or on the forecourt or at the roadside.