Howlish: Put Petrol in a Diesel Car?
Don't fire up the engine. While the fuel is still sitting in the tank and your engine has not yet turned over, a drain is nearly always all it needs — and that's settled in the following few minutes, not by how much got in. Petrol in Diesel drains and cleans misfuelled vehicles where they stand, across Howlish and the rest of Durham, on the forecourt, at the roadside or on a drive. A single ring to us is enough: our engineers shall explain what comes from here. Make this straight away.
What to do now about petrol in a diesel
- Don't fire it up. Started all the same? Then do not rely on it. Diesel in a petrol car usually won't run, so the driver stops and the harm ends with them. Petrol in a diesel? It starts. It idles. It moves off fine, for a few miles. Drivers get that reversed. It is not fine — that fuel system is wearing every mile you do.
- Switching the car's ignition on usually primes your system, and priming is what pulls petrol out of that tank then into the pump and injectors. Those are the parts diesel keeps lubricated on its way through, before it burns. Petrol handles the burning and none of the oiling. Leave your ignition be.
- Topping up removes nothing. It gives you a fuller tank of the same mixture, since a diesel fuel system doesn't tolerate petrol by percentage in the way that advice suggests — so don't tip diesel on top to water down it. Type is immaterial too: super unleaded is petrol.
- Stay still if it's sensible to. Hazards on, engine off, leave the car. Wherever you have stopped — the verge on A689, anywhere — a tricky location for us is better than a started motor, and nothing is easier for us to handle than a motor that never shifted.
- Before you phone, gather your position. Anything nearest to you with a label on it, plus a postcode that starts DL14 8 — that is what determines whether the technician turns up or circles.
- Phone 0333 366 0103. Anticipate three queries — what got in, about how much, plus if the car has been turned over. Those responses settle everything that follows.
Never drive it home. The commute has already put a real volume of petrol-thinned diesel through your high-pressure pump of your Renault Megane, and the journey back would close to double it for no gain at all. Ring us from the platform if that's simpler. Our engineers don't need you hovering over the car outside Shildon whilst our technicians work, and we'd very much rather speak to you tonight than learn on Monday.
The call we want runs like this: diesel Volkswagen Passat, a few litres of unleaded, run a couple of miles, now shut off outside Asda. What we're really asking is how much fuel your pump has pulled — not how long ago it was.
What our technicians will ask about is whether the trip there was brief and cold, because that's where petrol is least likely to burn properly — and whatever won't burn can get past the rings then into the engine oil. Right up to the moment someone takes it home, a diesel BMW 3 Series sitting in the parking area by The Three Tuns with a tank of petrol in it is a simple job. Nothing degrades whilst it waits, and so leave the car there overnight and phone in the morning.
Do not drive it home to buy yourself time. You already have it: nothing gets worse while the car sits, as a diesel Ford Focus parked at West Fall Plantation is doing none of what it did on the way there. The pump has stopped turning.
Cleared, not drained — that's what a diesel Citroen C4 which got as far as Coundon War Memorial needs. Running a diesel puts the mixture into the filter, your lines, your pump and the rail, none of which empties with the tank, so by now your tank holds the smaller part of the problem.
Pump-side drains for petrol in a diesel
A good portion of this job gets finished at a pump, because that is where it mostly begins. Our technicians work on station forecourts routinely, with the owner's permission, and so if you're still at Gulf that's generally where this drain happens.
Before the engine has run — a garage is the only location it gets caught. Anywhere else — a car park, a drive, a lay-by — the car was started and moved to get there, which means fuel was pulled from that tank, through the fuel filter then into your high-pressure pump. That is not a disaster, and our engineers can still deal with it where it stands. It does mean the fuel lines and your filter need cleaning as well as the tank, and that's settled by the few seconds between seeing the receipt and reaching for your key.
Move the car out of the way if the attendants suggest it, and they generally will. The next driver gets through the petrol pump, and that is worth doing. Four vehicle lengths is not worth a start.
Areas our vans serve in Howlish
Howlish is a rural hamlet, and so we are out to the town and to the villages near it on the usual trips: Coundon, Leeholme, Close House, Eldon and Coundon Grange.
Not on that list? That tells you nothing. The places above are just the nearest few, and the majority of places across Durham have a page of their own somewhere on the site. Phone to enquire rather than presuming — borders above all, and wherever your satnav can get wrong.
Use the map for the patch covered here. The car never needs to travel to us. We operate throughout all of it — roadside, forecourts, driveways, car parks.
Stuck on the kerbside anywhere around Howlish?
The opportunity to pull in somewhere suitable doesn't fall to everyone. Set off, then twigged? Finished up by the verge on Nicholson Court, or parked in some lay-by with the hazard lights on? That is a normal call here. Not a rare one.
Remain by the vehicle when it's safe to be in it, but out of it when it's not. Every mile a diesel obliges you for on petrol draws that mixture further into the fuel system — and oblige it frequently will, which is why your motor does not get restarted to limp somewhere handier. However difficult the place, it's no trouble for us to come to it, and that is far better for your car than driving on.
Run it already? Stop, then check below
Here is where your A1(M) matters, under 5 miles away from Howlish. 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 typically lost power, an uneven idle and some smoke instead of a clean stop.
The first safe exit is the one to take. Turn off there, then leave the restarting alone. Long run? Anything close to the under 10 miles to the closest city and you should assume the lot — filter, pump, injectors, all of it got to by the petrol. Say that on the call, as it alters what goes in our van.
Howlish itself
Howlish is a small hamlet in County Durham, situated inland at an elevation of 166 metres, approximately 8.7 miles from the city of Durham. Howlish is characterized by its terraced housing and is located near other local places such as Coundon, Leeholme, and Close House. Howlish has a population of around 562 people and is part of the wider Durham area.
What follows when our technicians get to you in Howlish
- Three things get established before any quote — your fuel that went in, the quantity, and if anything has been run since. Each answer changes the work.
- We empty the tank of all the polluted mixture.
- Fuel lines are flushed through and your filter cleared, leaving nothing in the fuel system that created any of this.
- The fuel system gets primed, on clean diesel.
- We start it and make sure it runs smoothly on fresh diesel.
The car is then ready for you to pull away. Our technicians do everything wherever the vehicle has ended up, which means it never has to go to a workshop, and when it has been caught soon, it's very uncommon for there to be permanent damage.
AdBlue in a diesel tank around Howlish is a different matter
Never start it: that first rule holds whether what was put in was AdBlue or petrol. What changes is this fault itself. Petrol does two things to diesel: weakens it, and takes away the lubrication the system relies on. Corrosion and residue are what a diesel tank ends up with instead, as AdBlue is urea dissolved in water.
Our technicians handle both, and AdBlue removal in Howlish has its own page with the full story — including why it's usually the more significant of the two.
Howlish prices for a petrol-in-diesel fuel drain
One number would not be fair here, since this isn't one job. These are the things that change it:
- Whether your engine has been started or driven. This is the main one.
- Wrong fuel in, against what your tank takes — that proportion.
- The kind of liquid in the tank, petrol or AdBlue.
- Whether our van can sensibly get to your vehicle and work on it, which rests on where the car is.
Tell us your vehicle, the amount and if it has run, and you'll get a clear answer instead of a range. Not urgent, with the vehicle at home and going nowhere? Then is fine.
Questions we hear about petrol in diesel in Howlish
Fuel drains on a Howlish petrol station forecourt
Plenty of what our engineers do happens nowhere else. So yes. Regularly, provided the site consents: Binchester Service Station, plus every other forecourt nearby. Say on the phone where precisely you have stopped. Whether our engineers can work in that spot is something we answer on the spot.
Is there a safe amount of petrol in a diesel?
It hinges on the proportion rather than the litres, and much more on whether the engine has run. Five litres into an almost dry tank isn't five into a full one, no. But both land on the same query in the end: has that blend been drawn right through, or has it not?
Petrol in my diesel, and I have driven it
Stop safely. Off. Nothing after that. Driving is what moves the issue from that tank into the pump and injectors — but it is salvageable a lot more often than drivers assume, and the single most helpful thing you can do now isn't restart it.
My warranty — does a fuel drain void it?
A drain then flush carried out correctly is not a modification and does not invalidate a manufacturer's warranty. A disagreement over a warranty is likelier to come from running a diesel on petrol — so leave it switched off.
Can I just add two-stroke oil and drive home?
What petrol has weakened is not replaced by two-stroke oil, which is an old remedy for a different fault. So no. That tank still has petrol in it later on, and your pump still has to live with it.
Does petrol in a diesel have to go to a main dealer?
No. Our engineers drain and clean the vehicle wherever it is, so there's no need to bring it to a franchised dealer.
Is the vehicle still with you?
Switched off is the way it stays.
Turn it off somewhere safe and leave it off, if you have already driven it. Cold and parked, a vehicle is in the best position available — and drivers fear this a lot more than the recovery rate warrants.
At the kerbside, on the forecourt or at home — call-out fuel draining around Howlish and throughout Durham.