Put Petrol in a Diesel Car in Hillmead? Don't Start It
Don't start the engine. If the fuel is still in the tank and the engine has not yet run, a fuel drain is almost always all it takes — and that gets determined in the coming few minutes, not by how much was put in. Petrol in Diesel drains and cleans wrong-fuelled vehicles where they are, all over Hillmead and the remainder of Wiltshire, on the forecourt, by the roadside or on a private drive. Call us and then our technicians will explain what follows next before you do anything else.
What next? Petrol in a diesel, in order
- As you drive, the pump and the injectors wear down. That's why you don't crank it, and why you don't rely on it once it has started. The thing about petrol in a diesel especially — the part people get wrong — is that it drives off happily for the first mile or two. Diesel in a petrol engine typically cannot run at all, which stops the motorist and stops the damage with them. This one lets you keep going.
- Switching the car's ignition on commonly primes the system, and priming is what pulls petrol out of your tank and into the pump and injectors. Those are the parts diesel keeps oiled on its way through, before it combusts. Petrol does the burning and none of the oiling. Leave the ignition be.
- Do not dilute it. Diesel added on top removes nothing, so all you have is more of what was already there, because percentage is not how a diesel fuel system handles petrol. Super unleaded? Simply petrol. The type makes no difference.
- A car that hasn't moved is the quickest one to sort out, so remain where you are if you sensibly can. Parked on the verge on Hillmead Drive? Hazards on, and leave it there. A difficult location suits us better than a started diesel.
- Check where you are before calling. A postcode beginning SN5 5, and the name of whatever is closest to you. Otherwise our van circles rather than turning up.
- Dial 0333 366 0103. Tell us what got in, approximately how many litres, and whether the car has run. Those three answers decide the entire call-out.
Can petrol be pumped out of a diesel on a forecourt?
A good chunk of this work gets finished at a pump, as that's where it mostly kicks off. Still at Shell? Then that is usually where it gets done. Petrol station forecourts are routine for us, with the agreement of the owner.
Nowhere else other than a forecourt can the mistake be caught with the motor still unstarted. Everywhere else — a car park, a driveway, a lay-by — your car was fired up and moved to get there, which means fuel was pulled from your tank, through the filter then into your high-pressure pump. That is not a calamity, and we can still sort it out where it sits. It does mean the fuel lines and the fuel filter need rinsing as well as your tank, and that is settled by the few seconds between seeing the receipt and going for the key.
Attendants will normally help out pushing it away from the pump, which lets the next customer get through. Welcome the assistance. Starting it to roll four car lengths is not.
Diesel Renault Clio. A few litres of unleaded. Driven a couple of miles. Turned off now, at Aldi. That is the enquiry our technicians like, because the point underneath it is about quantity through your pump not hours on the clock.
A diesel injection system works hydraulically as well as chemically: your fuel has to hold pressure, not merely burn. Thin that fuel and pressure which should build and stay built escapes past tolerances instead, leaving the motor a weaker, later, less even delivery than it was engineered round. Petrol dilutes diesel, and diesel has to be heavy enough to seal the close-fitting components it runs through — that is the full process. It accounts for the ordinary Shaw Forest Park call too: a diesel Mercedes C-Class that travelled out without fuss and came back down on power, uneven at idle, perhaps smoking a little. None of which is your engine failing, and that is the bit worth hearing. The fuel has stopped acting like diesel. Put your fuel right and it stops.
About as well as this goes, once your engine has turned: away from the pumps, receipt read, and the diesel Dacia Duster parked close to Swindon Lagoons barely two streets on. Phone us, and leave the vehicle off. A short distance does truly help. It was still a start and still a drive, though, and so the filter and your pump have had thinned fuel through them — hence rinsing the lines instead of only draining the tank.
Clattering? Lumpy idle? White smoke, throttle gone soft? That's your wrongly fuelled Peugeot 3008, a diesel, saying what is wrong with it. Stop wherever you happen to be, perhaps near Holy Trinity, and leave the restarting alone.
Put right and starting aren't the same thing, and the difference is the circuit: we flush it, and take the fuel filter off where there is a serviceable one. Compare that with the confident suggestion you will get — drain the car, refill with fresh diesel. Only half right. Do precisely that to a diesel Ford Kuga close to Roughmoor Community Hall and it will start, which is exactly why the advice sounds plausible. Then the engine pulls the petrol left behind in the fuel filter, and in the feed lines, straight back through the pump, since draining a tank does nothing whatever about fuel that has already left it. Ring us instead.
Can we cover your side of Hillmead?
Wild Duck Mead, Roughmoor, Rivermead, Ramleaze, Westlea — each of them on the runs that take us across to Hillmead as well, a residential suburb.
There are pages for nearly all towns in Wiltshire, and the ones listed above are just the immediate neighbours — so yours being missing from that list tells you nothing about if our engineers come. Phone to ask rather than presuming — borders above all, and anywhere the satnav tends to get wrong.
The map shows the ground this page includes. Kerbside, forecourt, driveway, car park: the lot is ground our technicians work on, and none of it asks the vehicle to travel to us.
Hillmead: broken down wherever you pulled up
Not everybody has a suitable spot to pull over. Set off, then noticed? Finished up on the verge beside Mead Way, or sat in some lay-by with the hazard lights flashing? That's a common call here. Not a rare one.
Out of the car while it isn't wise to sit there, by it when it is. Every mile a diesel obliges you for on petrol drags the mixture further into the fuel system — and oblige it usually will, which is why the motor doesn't get restarted to limp somewhere handier. A van coming to an inconvenient place is no bother for us, and it is much better for the car than driving on.
Some miles on petrol in a diesel: now what?
Here is where the M4 comes into it — under 3 miles from Hillmead. A wrongly fuelled diesel will usually take you onto it and some distance along before anything seems wrong, while the signs when they arrive are usually lost power, a lumpy idle and some smoke instead of a clean stop.
Don't start it to reposition. Get off at the next sensible junction and turn off. On a longer run — anything near the under 50 miles to the nearest city — take it the mixture has been through the filter, your pump and the injectors, and mention it when you call. It changes what our technicians bring.
Where is Hillmead?
Hillmead is a suburban area in Wiltshire, situated lakeside at an elevation of 98 metres, with a mix of housing types but predominantly detached homes. Hillmead lies near several other residential areas, including Wild Duck Mead, Roughmoor, and Rivermead, and is approximately 26 miles from the city of Bath. Hillmead is also within commuting distance of London, being around 73 miles west of the capital. Hillmead has a population of around 2775 residents.
What follows when we reach you in Hillmead
- Three things get checked before any quote — your fuel that got in, the quantity, and if anything has been run since. Each answer shapes the work.
- The contaminated fuel comes out of the tank.
- Lines rinsed, filter cleared. Whatever remains after that is not the thing that created the trouble.
- Our technicians put clean diesel in and bleed your system.
- It is run with clean diesel in it, and we confirm that it's running properly.
The vehicle is then ready for you to pull away. There's no need for a garage at any point, as the work is all done where the vehicle is, and when it is spotted soon, lasting damage is very unusual.
AdBlue in the diesel tank instead, around Hillmead?
If what got in was AdBlue instead of petrol, the opening step is the same — never crank it — but the problem is not. The protection a fuel system depends on is stripped away by petrol, which thins the diesel. AdBlue is urea dissolved in water, and in a diesel tank it brings corrosion and deposits instead.
Both are ours. There is a separate Hillmead page for AdBlue removal, with the details on it — including the reasons it often turns out to be the worse of the two.
Paying for a petrol-in-diesel fuel drain around Hillmead
What moves the price is listed below, since this job isn't one job and our technicians can't frankly put a single price on this page.
- This is the key one: whether your engine has been run, or driven.
- How much of the wrong fuel was put in, against how much that tank can hold.
- Whether it's petrol or AdBlue.
- Where your vehicle is, and whether a technician can safely get to and work on it.
A clear answer instead of a range is what you get for telling us three things: your car, the quantity, and if it has run. For your car at home that is going nowhere and is not pressing, is fine too.
Hillmead drivers ask us these about petrol in diesel
Can you do a fuel drain at a petrol station around Hillmead?
Yes, and it's where a large portion of this work takes place. Often, provided the site consents: Asda, plus every other forecourt nearby. Say on the phone where precisely you have stopped. Whether our technicians can work in that location is something our engineers answer there and then.
Is there a sensible quantity of petrol in a diesel?
It depends on the proportion instead of the litres, and a lot more on whether the engine has run. A nearly empty tank with five litres in it, against a full one with the same five: different situations, of course. Either way, the work required comes down to one thing, which is if the fuel system has had that mix pulled through it.
I put petrol in my diesel and drove the vehicle. What now?
Somewhere safe, then stop, then switch off and keep it off. Driving is what moves the trouble from that tank into your pump and injectors — but it's recoverable a lot more commonly than people fear, and the single most helpful thing you can do now is not restart it.
Fuel drains and manufacturer warranties
A manufacturer's warranty survives a drain and flush done to a proper standard, which is no alteration at all. Running a diesel on petrol is the thing likelier to cause an argument with one, which is another reason to leave the vehicle switched off.
Two-stroke oil in the tank, and then home?
Two-stroke oil solves a different problem, and an old one at that. Nothing it does puts back what petrol thinned. No. Later on? Still petrol in your tank, and a pump that has to put up with the stuff.
Does petrol in a diesel have to go to a main dealer?
Not at all. Our engineers drain and clean the vehicle wherever it is, so there's no need to take it to a dealership.
Is your car still with you?
Do not turn it back on.
Turn it off somewhere safe and leave it off, if you have already driven it. Cold and stationary, a car is in the best place available — and people fear this a lot more than the recovery rate warrants.
At the kerbside, on the forecourt or at home — on-site fuel draining in Hillmead and across Wiltshire.