Petrol in a Diesel Car in West Drumoyne: How Worried Should You Be?
Likely less than you are now — as long as nobody has started the car. Everyone around West Drumoyne begins with "have I wrecked it?", and the fair answer is normally no: petrol resting inside that tank of any diesel remains harmless till priming, cranking or driving draws it into the system. Leave your engine off and ring Petrol in Diesel — that keeps it like that. The remainder of this page sets out what petrol really does to a diesel, how to tell how far it has got, and how to make sure it does not happen to you again.
Petrol in a diesel: what does it do to the engine?
Two tasks fall to diesel on its route through a motor. Oiling comes before burning; it does both. Made to very fine tolerances, the injectors and the pump rely on your diesel flowing through them to keep their surfaces from wearing against one another.
Petrol does the first task badly and the second not at all. The knocking comes from petrol being made not to ignite when compressed, which is exactly the reverse of what a diesel needs. On top of that it is runnier than diesel, it strips out the lubrication your system rests on, and any pump working on such a mixture is wearing itself.
Combined, those make the shape of the issue clear. Not contact but circulation is what does the damage. Any tank with petrol in it is a fuel problem. Whatever a worn pump sheds travels on, carried by your fuel, into the fuel injectors further along, which is why a pump that has worked on the petrol is where a mechanical problem starts.
Petrol in a diesel in West Drumoyne: how bad is it? Four situations
Fuelled up, not once started. The best case there can be. The petrol is inside the tank and just the tank, and the job is a drain and a flush where the vehicle sits. This is the one scenario that can only truly happen on a forecourt, because anywhere else the vehicle has been driven to get there.
Started for a second, or just the ignition on. With the system primed, the lines and filter now hold petrol that came from the tank. That's usually still a straightforward task — a drain, a flush, and your filter seen to.
The pump has worked a couple of miles on diluted fuel — that's what driving the car does. The work is the tank, your lines, your filter and fresh fuel through the whole system, and how hard your car was driven matters as much as how far. Short trips, such as the school run to the local primary school, are one matter. Any miles on the M8, under a mile from West Drumoyne, means your engine has worked hard throughout, and a run to Glasgow, under 5 miles away, makes a very different job too.
Rattling, a lumpy idle, smoke, a throttle gone soft: driven till it complained. That's your engine telling you its fuel has stopped acting like diesel. Leave it where it has stopped: a lay-by, a quiet street, the verge on Kincraig Street. Permanent damage is very uncommon if a car is stopped soon, and the drain and flush that still come first deal with it.
West Drumoyne people and the petrol in a diesel stories they hear
Myth: "Fill it the rest of the way with diesel and it'll be fine." It will not. Nothing is removed when you top up — your tank simply carries more of the same blend. Percentage is not how a diesel fuel system tolerates petrol, however much that advice supposes.
Myth: "A newer diesel can cope with a bit of petrol." If anything, the reverse. A modern diesel runs its fuel through smaller parts at higher pressure, which makes the protection count more, not less.
"It starts, it drives, and so no harm done" — the myth that catches more drivers than any other. A petrol motor fed diesel usually will not run, so the driver stops and the damage stops with them. Nothing seems to have happened when a diesel fed petrol fires up, ticks over and drives away, as it usually does; meanwhile the pump grinds. Running isn't the same as fine.
Myth: "Add some two-stroke oil and drive the car home." It is an old workaround for a separate issue. None of what petrol thinned gets put back by it — and later, that tank still contains that petrol.
"Drain it yourself and you are sorted" — a myth, since after it has been running some petrol lies in the filter and lines, waiting to go right back through your pump at the next start. It's also genuinely risky to drain petrol into a can at the roadside.
How does petrol in a diesel take place?
Nobody does it on purpose, and it is seldom carelessness. One way only, because of the nozzles: the slimmer petrol one slides inside a diesel filler with almost no resistance, whereas the diesel one generally will not fit a petrol car. That's how the forecourt makes it straightforward.
Routine and the vehicle getting out of step is when it occurs. A new vehicle, a hire car or a courtesy car. One petrol and one diesel on the driveway of the same household. A forecourt you know, only with its pumps laid out differently. A train to catch, and a rushed fill en route to Cardonald. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is precisely the moment it happens. With rain, a call coming in, or a car full of children to deal with, your hand simply does what it always has.
Next time you fill up around West Drumoyne: avoiding petrol in a diesel
- Check the pump, not the colour. In the UK unleaded handles are generally green and diesel black, but not on each forecourt. The label is what counts.
- Inspect your filler flap. Many cars state the fuel inside the flap or on the cap. Look at it on your first fill in a motor you don't know.
- A coloured fob or a sticker on your diesel's key achieves more than any amount of intending to remember, for a home with one of each.
- It seems silly and it does the trick: on the first fill in a new or hired car, say "diesel" aloud before you lift the nozzle off the pump.
- Put your phone away. This is an easy mistake to make whilst you're thinking about something else.
- Some diesels have a filler built to refuse a petrol nozzle, and devices you can add are available for motors without one. Such an inhibitor helps up to a point — as a safety net, not a reason to stop reading the petrol pump.
- Less petrol makes a weaker mixture, and so stop the moment you realise — though remembering that your next stage is unchanged. It is still not to crank it.
Put petrol in a diesel in West Drumoyne already?
Then the order of things is brief. Leave it unstarted, with your ignition off as well. The attendants at the forecourt — whether at BP itself or wherever you filled up — will usually help roll it away from the petrol pump if you ask. Ring 0333 366 0103 next, with three answers — your fuel, the rough volume, and if it has run.
If it was AdBlue instead of petrol, say so. That is a different issue — corrosion and deposits and not lost lubrication — and it has its own page for West Drumoyne.
Why one petrol in a diesel task around West Drumoyne costs more than another
Four different jobs lie behind the four situations above — which is why there's no honest single quote. What shifts your cost is mostly which of them you are in. Where the vehicle is matters too, and whether a van can safely reach it, after the share of petrol to what that tank takes.
What got in, how much, and whether it has run — three queries our engineers ask before pricing, not after, for precisely that reason. A range turns into a straight figure when those answers are in.
About West Drumoyne
West Drumoyne is a suburban area located near the city of Glasgow, sitting at an elevation of 12 metres above sea level. West Drumoyne forms part of the larger Glasgow urban area, with nearby places including Drumoyne, Linthouse, and Govan. West Drumoyne is characterized by its predominant housing type, which consists mainly of flats, and is home to a population of approximately 5058 residents.
West Drumoyne and Glasgow City: where our fuel drain cover runs
West Drumoyne waits in the G postcode area, and the vans that answer petrol in diesel jobs there work the places around it as well — Drumoyne, Linthouse and Govan among them. Our technicians drain where the car is — your own driveway, a lay-by, a supermarket car park, a forecourt — so it never needs to come to us.
At the pump around West Drumoyne, right now?
The best position there is, then — that is where you are. Keep it off. Phone.