How Worried Should You Be? Petrol in a Diesel Car in Riccarton
Probably less than you are now — provided no one has started it. Till the ignition primes the pump, the starter turns, or the car is driven, petrol in a diesel tank just sits there and does no harm. Which makes the honest reply to that first Riccarton query — "have I ruined it?" — normally no. Petrol in Diesel is who to phone, with the engine kept off, so it remains that way. Keep reading for three things: the effect petrol has inside a diesel engine, the clues of how far it has spread, and ways to make sure you don't do it again.
Inside your engine: what petrol in a diesel does
Two jobs fall to diesel on its route through a motor. It ignites, and before it combusts it lubricates. Your high-pressure pump and the injectors are designed to very fine gaps, and the diesel passing through them is what keeps those surfaces from wearing down against one another.
Petrol handles the first task poorly and the second not at all. Being less viscous than diesel, petrol strips away the protection a fuel system needs, leaving a pump running on the blend to wear itself. It's also made to resist igniting under compression — the opposite of what a diesel needs — which is where you hear the clattering.
Seen together, they show what shape the issue has. Not contact but movement is what does the harm. Where the petrol is only in that tank, it's a problem of fuel, nothing more. Whatever a worn pump sheds goes on, borne by the fuel, into the fuel injectors downstream, which is why a pump that has been working on that petrol is where a mechanical problem begins.
How bad is petrol in a diesel? Four situations our engineers see around Riccarton
Filled up, and never started: nothing beats it. At a forecourt, and truly only there, the petrol is still limited to that tank — since anywhere else the car was driven to get to it. The task is draining and flushing on the spot.
Started for a moment, or only the ignition on. Petrol has left your tank and got to the fuel filter and your lines, since your system has been primed. Usually nothing more than draining, purging and sorting your filter, and so still easy.
Driven a couple of miles. Now your pump has spent those miles labouring on thinned fuel. Miles is only half of it; how hard it was driven counts equally. Either way this work includes that tank, the lines, your filter and fresh fuel through the whole system. Short trips, such as the school run to the local primary school, are one matter. Driving as far as Edinburgh, under 10 miles away, makes a very different task — as does any distance on the M8, under a mile from Riccarton, with your engine working hard the whole time.
It complained, and only then stopped: smoke, clattering, a throttle gone soft, an idle gone ragged. The engine is telling you your fuel is no longer behaving like diesel. Stop wherever you are — the verge on Riccarton Mains Road, a lay-by, a side street — and leave it where it is. A vehicle stopped early very rarely has lasting damage, because the fuel drain and the flush, which still go first, sort it out.
Stories Riccarton motorists hear about petrol in a diesel
Myth: topping up to full with diesel makes it fine. It doesn't. Nothing comes out when you top up — the tank just carries more of the same blend. Percentage is not how a diesel fuel system tolerates petrol, whatever that guidance assumes.
Not so: a current diesel copes with a bit of petrol. Rather, the opposite. Smaller parts and higher pressure are how a modern diesel runs its fuel, and that makes the lubrication matter more, not less.
"It starts, it drives, and so no harm done" — the myth that catches most people than any other. The driver of a petrol engine fed diesel usually has no choice but to stop, since it will not run, and the damage stops there. While the pump grinds, a diesel fed petrol normally starts, ticks over and drives away as if nothing has happened. Running does not mean fine.
An outdated workaround for a separate fault is behind this one. Myth: "Add some two-stroke oil and drive it home." What petrol has weakened remains diluted, and that petrol stays in that tank anyway.
"Drain it yourself and you're sorted" — a myth, because after it has been running some petrol sits in your filter and lines, ready to go right back through your pump at the next start. Besides, petrol emptied into a can by the road is genuinely dangerous.
Why petrol in a diesel takes place at all
On purpose? Never. Through carelessness? Rarely, if ever. A diesel nozzle mostly will not fit a petrol vehicle, but the slimmer petrol nozzle goes into the filler of a diesel nearly without resistance — so forecourts make this one mistake straightforward, and just in that direction.
Habit and the car getting out of step is how it occurs. Hire cars, courtesy cars, and motors that are new to you. Two vehicles on one driveway, one petrol, one diesel. The pumps in a different order on a familiar forecourt. Racing for a train outside Curriehill and filling up en route. Exactly the moment it takes place: after years of driving petrol, a driver fills a diesel Volkswagen Passat for the first time. The hand does what it has always done when you add rain, a phone call or a back seat full of kids.
How to avoid petrol in a diesel at your next fill-up around Riccarton
- Read the petrol pump, not the colour. In the UK unleaded handles are normally green and diesel black, yet not on every forecourt. The label is what matters.
- The first fill in a strange motor is the time to check the filler flap — on it, or on the cap, plenty of cars state which fuel to use.
- A coloured fob or a sticker on the diesel's key does more than any amount of intending to remember, in a home with one of each.
- Say it before you lift it. On your first fill in a new or hired car, say "diesel" aloud before you take the nozzle off the pump. It seems silly and it works.
- Tuck your phone away. This is an easy mistake to make while you're thinking about something else.
- A misfuel inhibitor helps, up to a point. Some diesels have a filler built to reject a petrol nozzle, and add-on devices are available for cars without one. They are a safety net, not a reason to stop reading the pump.
- Noticing it halfway? Stop at once. A weaker blend results from less petrol in your tank, yet your next step remains the same: do not crank it.
Already put petrol in a diesel in Riccarton?
The order of things is brief, then. Do not switch your ignition on, and don't crank it. If you're still at the forecourt — Sainsbury's or anywhere else — ask the attendants to help you roll the car clear of the petrol pump. Then phone 0333 366 0103 and tell us what got in, roughly how much, and whether it has run.
Say so if it was AdBlue instead of petrol: it's a different issue, with its own page for Riccarton, because AdBlue brings corrosion and deposits rather than lost protection.
Riccarton petrol in a diesel tasks: why one costs more than another
There is no honest single quote for this, since the four situations above are four different jobs. Mostly, your cost shifts with which situation you are in. Two things come after that: the petrol that got in as a proportion of what that tank holds, then the place the car is in and whether a van can get to it safely.
Three queries come first, before quoting, rather than after — what got in, how much, has it run — and that is the reason. A range turns into a straight figure when those answers are in.
About Riccarton and its setting
Riccarton is a locality situated on the riverside in the City of Edinburgh, with a mix of semi-detached housing and other residential properties. Riccarton lies approximately 5.6 miles west of Edinburgh's city centre, near the communities of Currie and Hermiston. Riccarton's elevation is around 85 metres above sea level, and it is home to a population of around 1716 people. Riccarton is also relatively close to other nearby places, including Sighthill.
Riccarton and City of Edinburgh: where our fuel drain cover reaches
Our teams answering petrol in diesel call-outs in Riccarton, in the EH postcode area, equally work the locations around it, Currie, Hermiston and Sighthill among them. No need to bring your vehicle to us. Forecourts, supermarket car parks, lay-bys and your own drive are all places where we work.
Still at the petrol pump around Riccarton?
Nothing beats it: that is where you now are. Phone, and keep it turned off.