Petrol in a Diesel Car in Belford: How Worried Should You Be?
Unstarted? Then less anxious than you probably feel. Petrol sitting in a diesel tank does nothing to your engine till something pulls it through your fuel system — your ignition priming your pump, the starter, or the drive itself. So the fair answer to the first question everyone around Belford asks, "have I ruined it?", is usually no. To leave the car that way, ring Petrol in Diesel then leave the engine switched off. Below, you will find what petrol actually does inside a diesel, how far it might have gone, and how to stop it happening to you again.
What petrol in a diesel does to the engine
Diesel does two jobs on its way through a motor. Before it ignites, it lubricates — and then it ignites. Extremely fine gaps are built into your injectors and the high-pressure fuel pump, and only your diesel flowing through keeps those surfaces from grinding together.
Badly at the first, not at all at the second: that's petrol. Being less viscous than diesel, petrol strips away the protection a fuel system needs, leaving a pump on the mixture to wear itself. It is also made to resist igniting under compression — the reverse of what a diesel needs — which is where you get the knocking.
Taken together, they make clear what shape the issue takes. It's circulation that does the damage, not contact. All a tank with petrol in it amounts to is a fuel issue. The beginning of a mechanical one is a pump that has been labouring on that petrol — and whatever a worn pump sheds moves on with your fuel to the injectors downstream.
Four scenarios our technicians see in Belford: how serious is petrol in a diesel?
Filled up, never started. The best case there is. At a forecourt, and truly only there, the petrol is still confined to your tank — since everywhere else the vehicle was driven to get to it. The task is draining and flushing on the spot.
A brief spell of running, or just the ignition on. Once primed, the system has drawn petrol from your tank as far as your filter and the lines. That's usually still an easy job — a drain, a flush, and the filter seen to.
Your pump now spent a couple of miles on diluted fuel — that is what driving the vehicle meant. The work is the tank, the lines, your filter and fresh fuel through the whole circuit, and how hard the vehicle was driven counts as much as how far. On the school run to Belford Primary School, the mileage is short. Very different a second time: a run to Newcastle upon Tyne, under 50 miles away, or some distance on the A167(M), under 50 miles from Belford, where your engine kept running hard.
Driven on till it protested — knocking, smoke, a ragged idle, a dead throttle. That is the motor telling you its fuel has stopped acting like diesel. Whether it is the verge on Church Street, a lay-by or a side road, stop there and leave it. The drain and flush still go first, and they sort it out: when a vehicle is stopped soon, permanent damage is very rare.
Petrol in a diesel stories Belford motorists hear
It will not be fine. The myth: "Fill it the rest of the way with diesel and it'll be." A bigger tank of the same mix is all it gives, since topping up removes nothing. That advice supposes a diesel fuel system handles petrol by percentage. It doesn't.
If anything, the opposite is true. Myth: "A newer diesel can cope with a bit of petrol." At higher pressure, through more precise components: that's how a newer diesel moves its fuel, so the lubrication counts more, not less.
"It starts, it drives, and so no harm done" — the myth that catches most motorists than any other. Feed diesel to a petrol engine and it generally will not run, so the driver stops — and the harm stops with them. Whilst the pump grinds, a diesel fed petrol usually starts, idles and drives away as if nothing has happened. A running engine doesn't mean fine.
An outdated fix for a separate problem lies behind this one. Myth: "Add some two-stroke oil and drive it home." It doesn't put back what petrol has thinned, and that petrol is still in the tank later on.
"Drain it yourself and you're sorted" — a myth, because after it's been running some petrol lies in your filter and lines, ready to go right back through the pump on your next start. Also, a can of petrol filled by the kerbside is truly risky.
How petrol ends up: petrol in a diesel
A careless moment is seldom the cause, and no one means to do it. The forecourt makes it simple: the petrol nozzle is the slimmer of the two, and it slides into a diesel filler with almost no resistance, while a diesel nozzle generally will not go into a petrol vehicle at all. So the error runs one way.
Routine and your car falling out of step is when it occurs. A new car, a hire car or a courtesy car. One petrol and one diesel on the drive of the same household. A forecourt you know, only with its pumps laid out differently. Filling up in a rush on the way to Chathill, with a train to catch. Years of petrol vehicles behind you, a diesel Volkswagen Golf in front of you on the forecourt for its first tank — that's when. Add a back seat full of children, a phone call or rain, and the hand takes over.
Belford motorists: how to avoid petrol in a diesel next time
- Read the petrol pump, not the colour. In the UK unleaded handles are usually green and diesel black, but not on every forecourt. The label is what counts.
- The first fill in a new motor is the time to check the filler flap — on it, or on the cap, many vehicles state the fuel they take.
- Mark the key. In a household with one of each, a coloured fob or a sticker on the diesel's key does more than any amount of intending to remember.
- It seems silly and it works: on the first fill in a new or hired car, say "diesel" out loud before you take the nozzle off the pump.
- While you are thinking about something else, this is an easy mistake to make — so put your phone away.
- Up to a point, a misfuel inhibitor helps: some diesels have a filler built to reject a petrol nozzle, and add-on devices are available for the rest. Treat it as a safety net, then keep checking the petrol pump.
- As soon as you notice, stop: less petrol inside that tank means a weaker mix. What to do next doesn't change, though — still don't start it.
Belford: already put petrol in a diesel?
Then the order of things is short. Don't turn the ignition on, and don't fire it up. Ask the attendants to help you roll it clear of the petrol pump if you're still on the forecourt, whether that's Gulf or somewhere else. Call 0333 366 0103 next, with three answers — your fuel, the rough quantity, and if it has run.
If it was AdBlue rather than petrol, say so. That's a different problem — corrosion and deposits rather than lost protection — and it has its own page for Belford.
What makes one Belford petrol in a diesel job cost more than the next
There is no fair single price for this, since the four situations above are four different tasks. The situation itself does most of the work of moving the cost. The proportion matters next, meaning how much of your tank is petrol, followed by the location of your car and whether getting to it is safe for our van.
That's why we ask three queries before costing rather than after: what was put in, how much, and whether it's run. With those answers, there is a straight figure rather than a range.
About Belford
Belford is a small village in north Northumberland, situated near the coast at an elevation of around 57 metres. Belford lies within a short distance of several nearby settlements, including Easington, Middleton, and Elwick. Belford has a population of approximately 975 residents, with a predominance of semi-detached housing. Belford is located about 43 miles north of Newcastle upon Tyne, and some 291 miles north of London.
Fuel drain cover around Belford and across Northumberland
The teams answering petrol in diesel jobs around Belford, in the NE postcode area, equally work the spots around it, Easington, Middleton and Elwick included. No need to bring your vehicle to us. Forecourts, supermarket car parks, lay-bys and your own driveway are all locations we drain.
Belford: still at the pump?
The best place there is, then — that's where you are. Turned off it remains; then phone.