Washford: Put Petrol in a Diesel Car?
With that tank still carrying the petrol and the motor not yet started, almost every job takes only a drain, so keep your engine off. That result is decided in the minutes straight after the fill-up, rather than by the amount that got in. Throughout Washford and the rest of Somerset, Petrol in Diesel drains the vehicle and flushes it where it stands, whether at a roadside, on a driveway or at a forecourt. A single ring our way is sufficient: our technicians can tell you what happens from here. Make this first.
Petrol in a diesel: what to do first
- Never start it — and never depend on it if it starts. Here is the bit motorists have wrong about petrol in a diesel in particular. A petrol engine fed diesel usually just will not run, so the driver stops and the harm ends with them. A diesel filled with petrol typically starts, idles and drives away quite happily for a couple of miles. It is not fine. It is eating into that fuel system whenever you drive.
- Switching your ignition on often primes the system, and priming is what carries petrol out of your tank and into the pump and injectors. Those are the components diesel keeps oiled on its way through, before it ignites. Petrol manages the burning and none of the lubricating. Leave your ignition off.
- Topping up gets rid of nothing. It leaves you a fuller tank of the same blend, because a diesel fuel system won't tolerate petrol by percentage in the way that advice assumes — so do not tip diesel on top to dilute it. Octane is immaterial too: super unleaded is petrol.
- A vehicle that has not shifted is the simplest one to sort out, so remain where you are if you sensibly can. Stopped on the verge on Monksway? Hazards on, then leave it there. A difficult place suits us better than a started engine.
- Before you dial, have your position. Anything next to you with a label on it, plus a postcode beginning TA23 0 — that is what settles whether the technician arrives or circles.
- Phone 0333 366 0103. Prepare for three queries — what was put in, approximately how much, and if your car has been run. Your responses decide all that comes after.
Tonight, please, instead of Monday. Running it home is the one thing not to do: a commute has forced real quantity through the pump already, petrol-thinned diesel and plenty of it, and the return trip would about double the figure to no gain. The Volkswagen Tiguan can wait at the nearest station perfectly well. Phone from the platform if handier; standing over us whilst we work isn't required.
Easy, these ones, and the reason is the miles: a mile at easy throttle draws hardly any of it. Petrol into a diesel Mercedes C-Class somewhere around Washford, a boot full of shopping, and you sat at Spar — call us. Exiting the space is not worth another start. The tank gets cleared where it waits, your fuel lines rinsed, new diesel in, and you get home.
Out there happy, back sluggish. If that was the run to Claydowns Covert, look at the tank. Diesel gets weakened by petrol, and thin fuel leaks past the fine clearances supposed to build injection pressure — so every further mile the diesel Audi A6 covered, the less pressure it held onto. Somewhere safe, switch off, ring us.
Rarely the trouble, the spot. On-street is the commonest spot our engineers work, and a cramped parking bay is far preferable to a motor that has been driven somewhere more convenient. What does help, when you call from close to St Mary's Church, is three things: the side the filler is on, whether our van can pull up next to without blocking the road, and whether anything has run since you filled up. Then the Kia Sportage gets drained, your filter changed where a serviceable one exists, the lines flushed and fresh fuel put through the entire circuit — as by now the worst of it is in your lines, not your tank.
A person certain will tell you to drain the car and put fresh diesel in. Half true, that. Try it on a diesel Volvo XC60 by Cleeve Abbey and your engine will start — which is precisely why it sounds like sense. Here is the problem: there is petrol left in the filter and the feed lines, and the first thing the engine does is pull it back through your pump a second time. Emptying a tank achieves nothing about fuel that already left your tank. Ring us. The circuit gets rinsed, the filter comes off where there is one worth removing, and that's what separates a fixed vehicle from one that merely starts.
Can petrol be taken from your diesel on the forecourt?
A large portion of this job is done at a pump, as that's where it mostly begins. The drain generally gets done right there. Still on the forecourt at Esso? Given the owner's permission, that is somewhere our engineers work, and regularly.
Before the engine has run — a garage is the only place the mistake gets stopped. Everywhere else — a car park, a private drive, a lay-by — the vehicle was started and moved to get there, which means fuel was sucked from the tank, through the fuel filter and into the high-pressure fuel pump. That's not a calamity, and we can still sort it out where it stands. It does mean the lines and the fuel filter need flushing as well as that tank, and that's determined by the few seconds between seeing the receipt and reaching for the keys.
Out from the pump, the next driver can get through — so yes, let the attendants help you push the vehicle. Very much worth doing. Four vehicle lengths is not worth the risk.
Can our engineers serve your part of Washford?
Hungerford, Bilbrook, Old Cleeve, Torre, Beggearn Huish — every one of those on our journeys that carry us over to Washford as well, a coastal village.
There are separate pages for most places across Somerset, and the ones mentioned above are just the nearest neighbours — so yours being left off that list says nothing whatsoever about whether our technicians come. Assuming is the thing to resist, above all on the boundary or somewhere your satnav fails. Phone to ask.
This map marks the ground the page includes. Our technicians work at the roadside, on forecourts, on driveways and in car parks over all of it, and your vehicle doesn't need to come to us.
Roadside call-outs in Washford
The chance to pull over somewhere sensible does not fall to everyone. If you worked it out after setting off and finished up by the verge of Claydon Close, or at a lay-by somewhere with the hazard lights going, that is a common call for us instead of an unusual one.
Whether you stay by the car or step away from it turns on whether staying in it feels sensible. It will often oblige. A diesel running on petrol limps along very willingly, and that is the catch: restart the vehicle to get to somewhere better and that mix goes further into the fuel system with every mile driven. Carrying on causes the vehicle far more harm than a technician coming out to a difficult place, and that's no problem for us.
Petrol in a diesel, and the motor has travelled
under 15 miles from Washford, the M5 is what matters now. Lost power, an uneven idle, some smoke: those are the symptoms when they arrive, rather than a neat stop — and a misfilled diesel will frequently get you onto it and some distance along before anything feels wrong at all.
Do not restart it to reposition. Come off at the next sensible exit and switch off. Presume the worst of it on a long run. Anything approaching the under 25 miles to the nearest city, and the petrol has been through the filter, through the pump, through your injectors. Tell us when you phone. What our technicians bring differs.
A bit about Washford
Washford is a small coastal village in Somerset, situated near the mouth of the River Washford, with an elevation of around 46 metres above sea level. Washford lies within a short distance of several nearby places, including Hungerford, Bilbrook, and Old Cleeve, and is approximately 23 miles from Cardiff. Washford has a population of around 584 people, predominantly living in semi-detached housing. Washford is located in the South West region of England, about 141 miles west of London.
What comes next when we arrive with you in Washford
- Three things get checked before any quote — the fuel that was put in, the amount, and whether anything has been run since. Each answer shapes the work.
- We empty your tank of the tainted fuel.
- Lines purged, filter cleared. Whatever is left later isn't the thing that started the trouble.
- Priming follows, once clean diesel is in.
- Our technicians start the car and make sure it runs correctly on fresh diesel.
Then it is ready to set off. There's no need for a garage at any stage, because the work is all done where your car is, and when it is spotted early, permanent damage is very uncommon.
AdBlue in a diesel tank in Washford is a distinct problem
AdBlue rather than petrol? Then the opening step is unchanged — your motor remains off — whereas this fault underneath it's a distinct one altogether. Petrol does two things to diesel: dilutes it, and removes the lubrication the fuel system relies on. AdBlue is urea dissolved in water, and in a diesel tank it causes corrosion and residue in its place.
Usually the more serious of the two, AdBlue — and the details sits on its own Washford page. Both are ours to handle.
What a petrol-in-diesel drain costs in Washford
Truthfully, no single figure fits on a page like this. This job varies. Here is what varies it:
- Started? Driven? Either answer counts more than anything else on this list.
- The tank's capacity, set against how much of the wrong fuel got into it.
- AdBlue or unleaded, whichever was put in.
- Access: the car's position, and whether working on it there is sensible for a technician.
Tell us what the vehicle is, how much got in, and whether the motor has run. A clear answer comes back, not a range. If it isn't time-critical — the car is at home and going nowhere — is fine too.
Washford drivers ask us these about petrol in diesel
Fuel drains on a Washford petrol station forecourt
A fair share of this work happens there, so yes. Tell us which one you're at when you call and we will tell you whether our technicians can work there. With the station's agreement our engineers attend Q8 and the other forecourts nearby regularly.
How much petrol is too much for a diesel?
Whether your motor has run counts far more, though the ratio matters too, instead of the litres. Five litres in an almost empty tank is a distinct case from five in a full one — but either way, the thing that determines how much work is required is whether that mixture has been sucked through your fuel system.
Petrol in my diesel, and I have driven the car
Stop somewhere sensible, turn off, then leave the car off. It is fixable much more regularly than motorists expect, even though driving is what moves the issue from that tank into your pump and injectors — and the single most useful thing you can do now is not restart it.
My warranty — does a fuel drain void it?
A drain and flush carried out correctly isn't a change and does not void a manufacturer's warranty. An argument 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 issue from a different era, and petrol has weakened something no oil of that kind restores. Petrol stays in that tank later on, whatever else goes in, and your pump gets no break from it.
Main dealers and petrol in a diesel
Wherever your car is, our technicians drain and flush it there, so a trip to the main dealer doesn't come into it.
Is the car still with you?
Don't turn the car on again.
Driven it already? Then somewhere safe, stop, turn off, and no restarting the vehicle afterwards. Cold, still, going nowhere: that's the best position to be in. People fear this much more than they need to.
Draining wrongly fuelled vehicles, Washford and the rest of Somerset, wherever they are. Kerbside. Forecourt. Home.