Skip to content

Petrol in Diesel

0333 366 0103

Lower Town: Put Petrol in a Diesel Car?

If you have not fired up the engine yet, do not. A drain and nothing more is nearly always what a motor needs while the fuel is still inside the tank and the engine has not yet been started, which is why it's the next few minutes that matter, not how much was put in. Petrol in Diesel goes to your car wherever it has ended up in Lower Town or the rest of Devon, on the forecourt, by the roadside or on a private drive, and drains and cleans it there. Our team shall explain what the next part will be. Ring us — it goes before anything else.

Call 0333 366 0103

Your first five minutes: petrol in a diesel

  • While you drive, your pump and the injectors wear. That's why you never fire it up, and why you never trust it once it has started. The catch about petrol in a diesel in particular — the part most people get wrong — is that it drives off normally for the first mile or two. Diesel in a petrol engine normally won't run at all, which stops the driver and stops the wear with them. This one lets you carry on.
  • Turning your ignition on frequently primes your system, and priming is what pulls petrol out of the tank then into your pump and injectors. Those are the parts diesel keeps lubricated on its way through, before it burns. Petrol does the burning and none of the lubricating. Leave the ignition alone.
  • Topping up clears nothing. It gives you a fuller tank of the same mixture, since a diesel fuel system will not accept petrol by percentage in the way that advice presumes — so never add diesel on top to weaken it. Octane is irrelevant too: super unleaded is petrol.
  • Remain where you are if you reasonably can. A car that has never shifted is the quickest one to handle, and our team would rather get to a difficult spot than have it started. If you are pulled up on the verge on Market Close, put those hazards on and leave it there.
  • Check where you are before calling. A postcode starting TQ11 0, and the name of whatever is closest to you. Otherwise the technician circles rather than arriving.
  • Phone 0333 366 0103. Expect three points — what was put in, roughly how many litres, plus whether your car has been started. Those replies shape whatever comes after.

Nothing about the time since has cost you anything. Fuel sitting in a tank is inert, and so a diesel Renault Megane left outside Totnes this morning is no worse at five than it was at nine — what sucked weakened diesel through the pump was the journey in. Ring us before you go to collect the vehicle.

Petrol in the Volkswagen Tiguan, and it takes diesel? Shopping in your boot, you outside The Co-operative Food, somewhere in Lower Town? Then call us, and leave your engine out of it — not even to leave that space. Someone gets to you. Tank emptied, fuel lines flushed, new diesel in, and home you go. Gentle throttle over a mile draws hardly anything, so these are usually the easy jobs.

A passer-by will advise you to move the vehicle out of the gateway and fix it later. Do not. A wrongly fuelled diesel Skoda Octavia on the zig-zags outside Buckfastleigh Primary School is an inconvenience; the same motor started three more times to be helpful is a fuel system and not a tank. Every restart primes your lines and draws more petrol through the filter then into the pump. Leave it there, let people grumble, then give us a call.

Pulled off the forecourt, read the receipt, and parked the diesel BMW 1 Series up close to St. Benedicts a few hundred yards later? That's about as well as this goes once the engine has turned. Call us and leave it off. The short drive really assists, but it was still a start and a drive, so diluted fuel has got to your filter and your pump — which is why we rinse your lines rather than only clearing that tank.

Most of these happen somewhere strange, and the cause is mechanical rather than slapdash — practically no resistance meets a smaller petrol nozzle entering a newer diesel filler neck. Two days into a diesel Kia Sportage, a fill-up by Church of the Christian Community that you didn't think about? Call us from where you are. Courtesy and hire cars go further before anyone clocks it, and the further they go, the more petrol winds up at the fuel injectors.

Mobile fuel drain van at a diesel car in Lower Town

At a forecourt: draining petrol from your diesel

It kicks off at a pump, generally. Often enough the job ends at one too. The drain normally happens right there. Still on the forecourt at Dart Garage Ltd.? Given the owner's consent, that's a spot we work, and regularly.

At the forecourt, this is halted with your motor never fired, and no place else does that. Fuel sucked out of your tank and through the filter, all the way to the high-pressure pump, is what happens when the engine is fired up and your car is moved to where it is now: the car park, the driveway or the lay-by, everywhere other than the forecourt. So the flush covers the filter and your lines together with your tank. That's still not a catastrophe, and we deal with it where the vehicle is. What settles it is whether the key was turned in the seconds after your receipt was checked.

Out from the pump, the next driver can get through — so yes, let the staff help you wheel it. Very much worth doing. Moving it four bays does not warrant firing the motor.

Lower Town and the towns beside it

Lower Town is a residential suburb, so our vans get out to the town and to anywhere near it on the same runs: Buckfastleigh, Glebelands, Higher Town, Buckfast and Lower Dean.

We still come. Those places above are merely the nearest neighbours, and a page exists for most locations around Devon, so an absence from the list isn't an absence from our coverage. Near a border, or somewhere your satnav misreads? Phone to check instead of assuming.

That map is the patch this page covers. Kerbside, forecourt, driveway, car park: the lot is ground our technicians cover, and none of it requires the car to travel to us.

Broken down on the kerbside near Lower Town

Some people get no safe place to pull in whatsoever. A routine call for us and not an unusual one: realised after setting off, ended up by the verge on Bridge Street or in a lay-by with the hazard lights on.

Remain by the motor if it is sensible to sit there, yet out of the vehicle if it's not. Do not start up the engine to nurse the car somewhere safer — a diesel running on petrol will usually oblige, and every mile it obliges for is dragging the mix further into the fuel system. A van heading to a difficult place is no bother for us, and it's a lot better for the car than driving on.

Already run it? Petrol in a diesel after a couple of miles

Your M5 is the road that matters now, and it lies under 25 miles from Lower Town. A misfuelled diesel will usually take you onto it and some distance along before anything seems wrong, while the signs when they arrive are typically a drop in power, an uneven idle and some smoke rather than a clean stop.

Take the first junction that is sensible, pull up there, and never restart the car to reposition. On a longer drive — anything close to the under 25 miles to the nearest city — take it the petrol has been through the fuel filter, your pump and your injectors, and say so when you call. It affects what our engineers bring.

Lower Town itself

Lower Town is a suburban area in Devon, situated on the riverside at an elevation of 44 metres, with terraced housing being the predominant type of accommodation. Lower Town lies near the towns of Buckfastleigh and Higher Town, and is approximately 17.6 miles from Plymouth. Lower Town is part of a larger residential area that has developed along the river, with nearby Glebelands also being a neighbouring suburb. Lower Town has a population of around 1998 residents.

When we reach you around Lower Town: what follows

  • Three things get checked before any quote — your fuel that went in, the quantity, and if anything has been run since. Each answer alters the work.
  • The polluted fuel is pulled from the tank.
  • Our technicians flush the lines and clear the filter, so what's remaining in the fuel system isn't what started the problem.
  • Your system gets bled, on new diesel.
  • Your engine is started and checked to make sure it runs smoothly on new diesel.

Then it is ready to drive away. Long-term damage is very unusual when it has been spotted soon, and as everything is done where the vehicle is, it never needs to be taken to a garage.

AdBlue in your diesel tank instead, around Lower Town?

Don't crank it: that first instruction applies whether what got in was AdBlue or petrol. What changes is the fault itself. Petrol does two things to diesel: weakens it, and takes away the protection your fuel system depends on. Urea in water, AdBlue, and in a diesel tank that brings corrosion and build-up.

Often the more serious of the two, AdBlue — and the details sits on its own Lower Town page. Both are ours to deal with.

Lower Town costs for a petrol-in-diesel drain

We can't put one figure on this page truthfully, since this job isn't one job. What changes it:

  • Has it been started or driven? Nothing else matters for as much.
  • How much of the wrong fuel went in, set against how much your tank takes.
  • Whether it's petrol or AdBlue.
  • Where your vehicle is, and whether a technician can sensibly reach and work on it.

Tell us what the car is, how much got in, and whether your engine has run. A clear answer comes back, not a range. For your car at home that is going nowhere and is not pressing, is fine too.

Things our technicians hear about petrol in diesel around Lower Town

At a petrol station in Lower Town, can you do a fuel drain there?

Yes — forecourts are where a good portion of this gets done. Tell us which one you are at when you phone and we will tell you if our engineers can work there. With the site's consent our technicians attend Shell and the other forecourts around town all the time.

How much petrol in a diesel is too much?

Litres aren't the yardstick. Ratio is, and a lot more than either, it counts if anything has been run. What settles how much work is required is whether that blend has been sucked through the fuel system — because even though five litres in an almost empty tank is a separate matter from five in a full one, either way that is the query.

Already driven it with petrol in your diesel? What then?

Stop somewhere safe, turn off, and keep the car off. Not restarting it is the single most helpful thing available to you now. Driving does shift the issue out of your tank then into your pump and injectors, yes, and it remains recoverable far more regularly than drivers fear.

Will a fuel drain void my warranty?

A drain and flush carried out correctly is not a modification and doesn't cancel a manufacturer's warranty. Running a diesel on petrol is the thing more likely to cause an argument with one, which is another good reason to leave the car turned off.

Two-stroke oil in your tank, and then home?

What petrol has diluted is not replaced by two-stroke oil, which is an old fix for a distinct problem. So no. Petrol stays in that tank later on, whatever else goes in, and your pump gets no reprieve from it.

Main dealers and petrol in a diesel

There is no need to take it to a dealership, as our technicians drain and clean the vehicle wherever it is.

Is your vehicle still with you?

Shut off is the way the car stays.

Already driven it? Then stop somewhere sensible, turn off, then let the car remain that way. Cold, still, going nowhere: that's the best place to be in. Motorists fear this much more than they need to.

Mobile fuel draining in Lower Town and across Devon — at the roadside, on the forecourt or at home.

Call 0333 366 0103