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Petrol in Diesel

0333 366 0103

Put Petrol in a Diesel Car in Pound Hill? Don't Start It

If you have not fired up the engine as yet, do not. A fuel drain and nothing else is almost always what a car needs while the fuel is still sitting in the tank and the motor has not yet run, which is why it's the next few minutes that count, not how much got in. Petrol in Diesel travels to your car wherever it has come to rest in Pound Hill or the rest of West Sussex, on the forecourt, by the roadside or on a private drive, and drains and cleans it there. Contact us before anything else starts, and you will see what happens from there.

Call 0333 366 0103

Your first five steps: petrol in a diesel

  • Don't fire it up — and do not believe it when it fires up. Here is the thing drivers get wrong about petrol in a diesel specifically. A petrol engine filled with diesel typically just won't run, and so the driver stops and the wear stops with them. A diesel filled with petrol typically starts, ticks over and drives away quite happily for several miles. It is not all right. It's wearing the fuel system as you drive.
  • Diesel combusts, and before it burns it protects — your high-pressure fuel pump, its injectors. Petrol manages only the burning. So leave the car's ignition off as well: switching it on is usually sufficient to prime your system, and priming carries petrol from your tank into exactly those components.
  • Never pour diesel on top to weaken it. A diesel fuel system does not handle petrol by percentage the way that guidance presumes, and topping up takes out nothing — it simply hands you a fuller tank of the same mixture. The grade makes no difference either: super unleaded is simply petrol.
  • A car that hasn't shifted is the easiest one to handle, so wait where you are if you sensibly can. Pulled up on the verge on Worth Park Avenue Roundabout? Hazards on, and keep the car there. A tricky place suits us better than a started engine.
  • Before you ring, get your position. Anything next to you with a label on it, plus a postcode that starts RH10 3 — that's what decides whether the van turns up or circles.
  • Ring 0333 366 0103. Expect three things — what got in, roughly how much, plus if the motor has been turned over. The replies shape all that follows.

Can petrol be taken from a diesel at the forecourt?

The job starts at the pump, mostly. Frequently the job ends at one too. The drain usually gets done on the spot. Still on the forecourt at Texaco? Given the site's consent, that's a place our technicians work, and routinely.

At the forecourt, it is caught with your motor never started, and no place else does it. The few seconds between checking the receipt and going for the keys decide how much requires flushing. Everywhere other than a forecourt — a car park, a private drive, a lay-by — the car was fired up and moved to get there, so fuel was pulled from that tank, through the fuel filter and into your high-pressure pump. That means your lines and your filter need flushing as well as your tank. It's not a catastrophe, and we can still deal with it where the car stands.

Clear of the petrol pump, the next driver can get by — so yes, let the attendants help you roll the vehicle. Very much worth it. Rolling it four spaces doesn't justify starting it.

Mobile fuel drain van at a diesel car in Pound Hill

Parts our vans serve near Pound Hill

These same rounds bring us to Burleys Wood, Crabbet Park, Worth, Three Bridges and Forge Wood along with Pound Hill, which is a residential suburb.

There are dedicated pages for most towns in West Sussex, and the ones mentioned above are just the nearest neighbours — so yours being absent from that list tells you nothing whatsoever about if our technicians come. Contact us to ask instead of assuming, above all when you're on the border or anywhere the satnav struggles with.

The map shows the area this page includes. We work by the road, on forecourts, on driveways and at car parks throughout all of it, and your car doesn't need to move to us.

Each restart primes your lines and drags more petrol through the filter then into your pump. So a wrongly fuelled diesel Skoda Octavia on the zig-zags at Pound Hill Infant Academy is an inconvenience, whereas the same vehicle fired up three more times to be polite is a fuel system and not a tank. Someone will advise you to move it out of that gateway and fix it later. Please don't. Leave it there, let everyone complain, then ring us.

Park it there overnight. Ring us first thing. Nothing about a diesel BMW 3 Series parked in the car park by The Hillside Inn deteriorates while it sits, tank of petrol or not, and the job stays a straightforward one right up till the moment it gets driven home. The query our technicians bring is about the trip there: a cold motor over a short distance is where petrol ignites least well, and whatever fails to burn can work its way past the piston rings into the sump.

Diesel has to be heavy enough to seal the precision parts it flows through, and petrol thins it. That's the entire mechanism, and it accounts for the ordinary Burleys Wood call: a diesel Audi A4 that went out there without a murmur and came back down on power, lumpy at idle, maybe smoking a little. A diesel injection system works hydraulically as well as chemically — it requires your fuel to hold pressure, not merely to burn — so when the fuel weakens, pressure that should build then stay built starts escaping past clearances instead, and the motor gets a weaker, later, less even delivery than it was built around. None of that is your engine failing, which is the bit worth hearing: it's your fuel no longer acting like diesel, and it stops when the fuel is corrected.

Why so blunt about leaving your keys alone? Since your pump is before the injectors, and a worn-out one sends whatever it loses onward with your fuel. Phone us. Leave the Ford Focus close to Moat.

A few streets, then it stopped. Throttle soft, idle ragged, and the diesel Peugeot 2008 is parked up close to St Edward the Confessor's. Your engine is not packing up — that softness is fuel that will not build pressure. There's no light on the dash for it, and so motors like yours normally get driven again before somebody picks up the phone. Do not. Off, and phone us.

Stranded by the roadside somewhere around Pound Hill?

Some people get no safe place to pull over at all. Set off, then realised? Landed along the verge of Cherry Tree Close, or sat in some lay-by with the hazard lights flashing? That is a normal call here. Not an odd one.

Fine right there? Stay by it. Not fine? Step out and away from it. It will frequently oblige. A diesel running on petrol limps along quite willingly, and that is the catch: start it up to get to somewhere safer and the blend goes further into the system with every mile driven. We will take the van to a tricky location without any bother, and for the car that is a lot better than carrying on.

A few miles on petrol in a diesel: what next?

under a mile out of Pound Hill, the M23 is what matters here. Lost power, an uneven idle, some smoke: those are the signs when they appear, instead of a clean stop — and a misfilled diesel will usually take you onto it and some distance along before anything seems wrong at all.

The next safe exit is the one to take. Switch off there, then leave the restarting alone. Long run? Anything close to the under 25 miles to the closest city and you should suppose the lot — filter, pump, injectors, all of it arrived at by the petrol. Say that on the phone, since it affects what goes in the van.

A little about Pound Hill

Pound Hill is a suburban area in West Sussex, situated inland at an elevation of around 85 metres. Pound Hill lies approximately 26.6 miles south of London and 20.7 miles north of Brighton and Hove, near neighbouring areas such as Burleys Wood and Crabbet Park. Pound Hill is characterized by its predominantly detached housing stock, reflecting the area's residential nature. Pound Hill has a population of around 7246 people, according to recent estimates.

What comes next when our engineers reach you around Pound Hill

  • Our technicians ask first, price after. What was put in? How much? Has your motor run? Those replies shape what the work actually is.
  • Out goes the tainted mixture.
  • Our technicians flush your fuel lines and clean the fuel filter, and so what's remaining in the fuel system isn't what caused the trouble.
  • The system gets bled, on new diesel.
  • The motor is started and tested to make sure it runs smoothly on fresh diesel.

The vehicle is then ready for you to pull away. Lasting damage is very rare when it has been noticed quickly, and because all of it is done where the vehicle is, it never has to go to a workshop.

A separate problem: AdBlue in a diesel tank around Pound Hill

The fault isn't the same, though the opening step is — do not fire it up — if what was put in was AdBlue instead of petrol. Petrol thins your diesel and takes away the lubrication the fuel system relies on. AdBlue? Urea dissolved in water. Tip that in with the diesel and you get corrosion instead, plus deposits.

Both are ours. There's a separate Pound Hill page for AdBlue removal, with the details on it — including the reasons it usually turns out to be the worse of the two.

Paying for a petrol-in-diesel fuel drain in Pound Hill

One number would not be honest here, since this isn't one job. These are the things that shift it:

  • Whether the motor has been run or driven. This is the main one.
  • How much of the wrong fuel got in, weighed against how much that tank takes.
  • The type of liquid in the tank, petrol or AdBlue.
  • Where the car is, and whether our van can safely get to and work on it.

Tell us what the car is, how much went in, and if the engine has run. A firm answer comes back, not a range. For the car at home that is going nowhere and isn't pressing, works too.

Things our technicians get about petrol in diesel in Pound Hill

Fuel drains on a Pound Hill petrol station forecourt

A large share of this work happens there, so yes. Tell us which one you're at when you call and we'll tell you whether our engineers can work there. With the owner's agreement our engineers work at Tesco and the other forecourts around town routinely.

How much petrol in a diesel is too much?

Ratio settles it instead of litres — and more than either, whether the engine has run. What settles how much work is needed is if that mixture has been drawn through the system — because even though five litres in a nearly empty tank is a separate case from five in a full one, either way that's the question.

I drove the car after putting petrol in my diesel. What next?

Stop safely. Off. Nothing after that. Not restarting it is the single most valuable thing available to you now. Driving does move the problem out of that tank and into your pump and injectors, yes, and it stays recoverable a lot more commonly than people expect.

Is a fuel drain going to void my warranty?

It is not a change, so a drain and flush carried out correctly does not void a manufacturer's warranty. What's likelier to start an argument is a diesel that has been run on petrol. One more good reason for the engine to stay off.

Could I put some two-stroke in and just drive?

No. Two-stroke oil is an old fix for a distinct issue and it does not restore what petrol has weakened. Petrol stays in that tank later on, whatever else goes in, and your pump gets no respite from it.

Main dealers and petrol in a diesel

Not at all. Our technicians drain and flush your car wherever it is, so there's no need to bring it to a franchised dealer.

Is your vehicle still with you?

Switched off is how the car remains.

Driven it already? Then somewhere safe, stop, switch off, and no restarting it after that. This is recoverable from a lot more regularly than people assume, and a still, cold vehicle is the best place to be in.

Emptying misfilled vehicles, Pound Hill and the rest of West Sussex, wherever they are. Roadside. Forecourt. Home.

Call 0333 366 0103