St George: Put Petrol in a Diesel Car?
With the tank still holding the petrol and the engine not yet turned over, almost every job requires only a drain, so leave the engine off. That outcome is decided in the minutes straight after the fill-up, and not by the amount that went in. All over St George and the rest of Bristol, Petrol in Diesel drains the vehicle and cleans it where it stands, whether by a roadside, on a drive or at a forecourt. Our technicians will tell you what your next stage will be. Ring us — this comes before all else.
What to do next about petrol in a diesel
- Whenever you drive, your pump and the fuel injectors wear. This is why you never 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 away fine for the first mile or two. Diesel in a petrol motor usually cannot run at all, which stops the person and stops the wear with them. This one lets you keep going.
- Switching the car's ignition on usually primes that system, and priming is what carries petrol out of that tank then into the pump and injectors. Those are the parts diesel keeps oiled on its way through, before it ignites. Petrol handles the burning and none of the protecting. Leave the ignition alone.
- Never dilute it. Diesel poured on top clears nothing, and so all you have is more of what was already there, because percentage isn't how a diesel fuel system copes with petrol. Super unleaded? Just petrol. The octane makes no difference.
- Stay where you are if you safely can. A vehicle that has never shifted is the easiest one to sort out, and we'd sooner get to a tricky spot than have it started. If you're parked on the verge on Wicket Lane, switch the hazards on then keep the car there.
- Have your position prepared before you ring. A postcode starting BS5 8 and whatever is closest to you with a name on it is the difference between our van turning up and the van circling.
- What got in, roughly how many litres, and whether your car has started — the three answers shape the whole job. Ring 0333 366 0103 and tell us.
On a forecourt: draining petrol from your diesel
Most of the job begins at a forecourt, meaning a good share of it gets completed at one. The drain typically takes place there and then. Still on the forecourt at Esso? Given the station's consent, that is somewhere our technicians work, and often.
At a garage, this gets halted with the engine never fired, and nowhere else manages it. We can still put it right where it stands, even away from the pumps. In a car park, on a driveway or in a lay-by, the vehicle has been started and moved there, and that drew fuel through the fuel filter then into the high-pressure pump, right from that tank. None of that is a calamity, but the flush then has to go past that tank to the fuel lines and the filter, and the few seconds between reading the till receipt and going for your key are what determine that.
Attendants will generally help out pushing it out from the petrol pump, which lets the next customer get by. Welcome the offer. Firing the car just for four car lengths? Never.
If you've put petrol in your diesel BMW 3 Series around St George and you are now stranded outside Aldi with a boot loaded with shopping, call us. Don't crank it a second time to leave that space. We'll get to you, empty your tank, rinse your fuel lines and put fresh diesel in so you can get home. A mile or so at light throttle draws very little of it, so such jobs tend to be the simple jobs.
Each restart primes your lines and pulls more petrol past your filter then into the pump. So a misfuelled diesel Ford Focus on the zig-zags at St Patrick's Catholic Primary School is an inconvenience, while the same vehicle fired up three more times to be polite is a fuel system instead of a tank. A passer-by will urge you to shift it out of the gateway and deal with it later. Don't. Leave it there, let everyone grumble, and call us.
It will start. It will pull away perfectly well. That is the trouble, as a diesel on a diluted tank behaves typically whilst wearing down the components its fuel should be lubricating. So no, don't try the journey home from The Fire Engine — leave the Peugeot 3008 then ring us.
Don't drive it home to buy yourself time. You already have it: nothing gets worse while the vehicle sits, since a diesel Audi A6 left at Garden of Remembrance is doing none of what it did on the way there. Your pump has stopped turning.
Our technicians clean the lines rather than only clearing your tank, and the reason is that weakened fuel has already reached your filter and the pump: it was a start and a drive, however short. The distance really assists — pulled off the forecourt, receipt read, a diesel Skoda Superb parked up by Saint Marina Coptic Orthodox Church a few hundred yards later is about as well as this goes once the engine has turned. Phone us then leave it off.
St George plus the places near it
St George is a residential suburb, and so our technicians go out to it and to anywhere by it on the usual rounds: Redfield, Whitehall, Netham, Lower Easton and Moorfields.
If yours is not on this list it doesn't mean we don't come — there are pages for the majority of places in Bristol, and the ones mentioned above are simply the nearest neighbours. Ring us and ask instead of assuming — borders particularly, and anywhere a satnav might struggle with.
The ground the page includes is on the map. We operate by the road, on forecourts, on driveways and in car parks over all of that, and your car doesn't need to travel to us.
Stranded by the kerbside anywhere in St George?
A chance to pull over anywhere safe doesn't fall to everyone. A common call for us and not an odd one: worked out after setting off, ended up along the verge of Blackswarth Road or in a lay-by with your hazards on.
Whether you remain by the motor or step away from it hangs on if being in it feels wise. Don't restart it to reach a better location. It'll go — a diesel on petrol generally obliges — and each mile of obliging pulls that blend deeper into the fuel system. Pressing on does your car far more harm than a technician driving out to a difficult location, and that is no trouble for us.
So you've run it? Petrol in a diesel after a few miles
The M32 is the one which matters here, and lies under a mile from St George. Some distance along, and onto it in the first place: a misfuelled diesel will frequently do both before anything feels wrong. What you get then is seldom a tidy stop. Power drains away, your idle turns rough, and there may be some smoke.
Take the next exit that is sensible, stop there, and do not restart the car to reposition. It alters what we bring, and so mention it when you call: on a longer drive — anything close to the under 3 miles to the nearest city — assume the contamination has been through your filter, your pump and the injectors.
A little about St George
St George is a suburban area in Bristol, situated near the lakeside and approximately 2.2 miles from the city centre. St George has a mix of terraced housing and is located at an elevation of around 40 metres, with nearby areas including Redfield, Whitehall, and Netham. St George is part of the larger Bristol urban area, which is about 104 miles west of London.
What we do when we arrive with you around St George
- Our technicians find out what went in, how much, and whether the motor has run. The replies change the work, which is why our engineers ask before pricing.
- The polluted mixture comes from your tank.
- What is remaining in your system shouldn't be what caused the problem, so the fuel lines get rinsed and your filter cleared.
- Bleeding your system follows, once new diesel is in.
- It's fired up with clean diesel in it, and we confirm that it's running correctly.
After that it's ready to pull away. Permanent damage is very unusual when it has been noticed quickly, and since all of it is done where your car is, it never needs to go to a workshop.
AdBlue in your diesel tank instead, around St George?
AdBlue instead of petrol? Then the opening step is unchanged — the motor stays off — while the issue under it's a distinct one altogether. Diluted diesel, and no lubrication left for your fuel system that relies on it. That is petrol. AdBlue is urea dissolved in water, and in a diesel tank it causes rust and residue instead.
Often the more significant of the two, AdBlue — and the full story sits on its own St George page. Both are ours to deal with.
Budgeting for a petrol-in-diesel drain in St George
One figure would not be fair here, since this isn't one job. These are the things that move it:
- Has it been started or driven? Nothing else matters for as much.
- The tank's capacity, set against how much of the wrong fuel went into it.
- Which got in: petrol or AdBlue.
- Access: the car's position, and if working on it there's sensible for our van.
A firm answer instead of a range is what you get for telling us three things: the vehicle, the quantity, and if it has run. If it's not pressing — your car is at home and going nowhere — is fine too.
Questions our engineers hear about petrol in diesel in St George
Can you do a fuel drain at a petrol station in St George?
Plenty of what our technicians do gets done nowhere else. So yes. We attend Texaco and the other forecourts around town all the time, with the station's agreement — tell us which one you're at when you phone and we will tell you if we can work there.
Is there a sensible amount of petrol in a diesel?
Ratio decides it instead of litres — and more than either, whether your engine 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 mixture been pulled right through, or has it not?
I put petrol in my diesel and drove the vehicle. What now?
Switch off somewhere safe, and keep it that way after you stop. It is salvageable much more frequently than motorists assume, even though driving is what takes the issue from that tank into the 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 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 vehicle switched off.
Can I just add two-stroke oil and drive home?
No. Two-stroke oil is an old workaround for a different issue and it does not replace what petrol has thinned. That tank still has petrol in it after that, and the pump still has to put up with it.
Do I need a main dealer for petrol in a diesel?
There is no need to take it to a main dealer, since we drain and clean the vehicle wherever it is.
You, and your car, still together?
Do not switch the engine back on.
Already driven it? Then stop somewhere safe, switch off, then let it stay that way. This is recoverable from much more commonly than people fear, and a parked, cold motor is the best place to be in.
Across Bristol and around St George: call-out fuel draining, at home or on the forecourt or at the kerbside.