Should You Worry? Petrol in a Diesel Car in George Hill
Not started? Then less worried than you probably are. Petrol resting in a diesel tank does nothing to your engine until something draws it through the fuel system — your ignition priming the pump, the starter, or the drive itself. So the fair answer to the first query anyone around George Hill asks, "have I wrecked it?", is normally no. Keep it that way: leave the engine off and call Petrol in Diesel. What petrol actually does to a diesel, how to gauge how far it's gone, and how to stop it from happening a second time: that is the rest of this page.
Inside your engine: what petrol in a diesel really does
Diesel does two tasks on its way through an engine. Before it combusts, it lubricates — then it ignites. Built to extremely fine tolerances, the injectors and the pump rely on the diesel moving through them to stop their surfaces wearing against one another.
Of those two tasks, petrol manages the first poorly and the second not at all. The knocking comes from petrol being made not to ignite when compressed, which is precisely the reverse of what a diesel needs. On top of that it is thinner than diesel, it strips away the lubrication the system depends on, and any pump working on that blend is wearing itself.
Put those together and the shape of the issue is clear. Not contact but movement is what does the harm. All a tank with petrol in it amounts to is a fuel problem. Whatever a worn pump sheds goes on, carried by the fuel, into the fuel injectors downstream, which is why a pump that has been working on the petrol is where a mechanical fault starts.
How bad is petrol in a diesel? Four situations our engineers see around George Hill
Fuelled up, never started. The best case there can be. Just that tank has petrol in it, and so the job is draining the tank and flushing the fuel system where your car sits. This situation can only truly occur on a forecourt: anywhere else, the vehicle got there by being driven.
The ignition switched on, or a brief start. The fuel system has been primed, so petrol has left the tank and got to the fuel filter and the lines. That's generally still an easy job — a drain, a flush, and your filter seen to.
Those few miles on the road meant your pump working on fuel weakened by petrol throughout. How hard the vehicle was driven matters as much as how far, and the work covers the tank, your lines, the filter and clean fuel through the entire system. Driving the kids to Old Catton CofE VC Junior School is one sort of trip. Very different again: a trip to Norwich, under 3 miles away, or some miles on the M11, over 50 miles from George Hill, where the engine never stopped labouring hard.
Driven on until it complained — clattering, smoke, a ragged idle, a dead throttle. The motor is telling you the fuel is no longer behaving like diesel. Pull up wherever you are — the verge on Spixworth Road, a lay-by, a side street — then leave the car where it is. What comes first is still the fuel drain and flush, and that deals with it, with permanent damage very uncommon when a car is stopped quickly.
What George Hill motorists get told about petrol in a diesel — and the myths in it
Myth: "Fill it the rest of the way with diesel and it will be fine." It will not. Nothing is removed by topping up — you are left with a fuller tank, still the same mixture. That guidance presumes a diesel fuel system handles petrol by percentage. It doesn't.
Myth: "A current diesel can cope with a bit of petrol." If anything, the opposite. A current diesel sends its fuel through smaller components at higher pressure, which makes the lubrication count more, not less.
The myth that catches people off guard: if it starts and drives, it must be unharmed. Diesel in a petrol motor normally leaves a motor that won't run: the motorist stops, and so does the damage. 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. Being able to run is not proof of being fine.
Myth: "Add some two-stroke oil and drive the car home." It's an outdated fix for a separate problem. That petrol is still in your tank afterwards, and what it has weakened isn't put back.
"Drain it yourself and you are sorted" — a myth, because after it's been running some petrol lies in the filter and lines, waiting to go right back through your pump at the next start. Besides, petrol emptied into a can by the road is genuinely hazardous.
Petrol in a diesel: how does it occur?
It is seldom carelessness, and nobody does it on purpose. A diesel nozzle mostly will not fit a petrol motor, but the narrower petrol nozzle goes into the filler of a diesel almost without resistance — so forecourts make this one error simple, and just in one direction.
The moment habit stops matching your car is the moment it occurs. Any car that's new to you — hired, on loan as a courtesy car, or just bought. A household with one petrol and one diesel on the driveway. A forecourt you know, but with its pumps arranged differently. Filling up in a rush en route to Norwich, with a train to catch. The first fill-up in a diesel Volkswagen Golf after years of driving petrol is precisely the moment it takes place. Throw in rain, a phone call or a back seat full of kids, and your hand does what it has always done.
George Hill motorists: how to avoid petrol in a diesel next time
- Not every forecourt in the UK follows green for unleaded and black for diesel, though most usually do. Read the petrol pump's label; the colour is only a hint.
- Check the filler flap. Many cars state the fuel inside the flap or on the cap. Look at it on the first fill in a car you do not know.
- Mark your key. In a home with one of each, a coloured fob or a sticker on the diesel's key does more than any amount of intending to remember.
- Before the nozzle leaves the pump the first time you fill a hired or new motor, say "diesel" out loud. Daft, perhaps, but it works.
- Mistakes like this are simple to make while your mind is on something else, so your phone goes away.
- Some diesels have a filler designed to refuse a petrol nozzle, and devices you can add are available for vehicles without one. Such an inhibitor helps up to a point — as a safety net, not a reason to stop checking the petrol pump.
- Spotting it halfway? Stop there and then. A weaker mix follows from less petrol in your tank, yet the next step stays the same: do not crank it.
Already put petrol in a diesel in George Hill?
The order of things is short, then. Never fire it up, and don't switch your ignition on. The attendants on the forecourt — whether at Harvest Energy itself or wherever you filled up — will normally help push it away from the petrol pump if you ask. What was put in, about how much, and whether it has run: tell us that when you ring 0333 366 0103.
Say so if it was AdBlue instead of petrol: it is a separate fault, with its own page for George Hill, since AdBlue brings corrosion and deposits rather than lost lubrication.
Why one petrol in a diesel job in George Hill costs more than another
There's no fair single price for this, because the four situations above are four separate tasks. The scenario itself does most of the work of moving your cost. Two things follow that: the petrol that went in as a share of what your tank holds, then the place the car is in and whether a van can get to it safely.
Three queries come first, before any quote, instead of after — what went in, how much, has it run — and that is the reason. The answers turn a range into a straight figure.
About George Hill itself
George Hill is a suburban area located near Norwich in Norfolk, sitting at an elevation of 26 metres in the gently rolling East Anglian landscape. George Hill is characterized by its predominantly detached housing stock, reflecting the area's residential development. George Hill is situated close to nearby places such as Old Catton, New Sprowston, and Mill Hill, and is approximately 2.1 miles from Norwich city centre.
Fuel drain cover in George Hill and across Norfolk
Old Catton, New Sprowston and Mill Hill are among the locations around George Hill that the same teams work, answering petrol in diesel calls across George Hill's NR postcode area. A forecourt, a supermarket car park, a lay-by or your own drive are all places our technicians drain, and your vehicle doesn't need to come to us.
At the pump around George Hill, right now?
Then you're in the best spot there is. Keep the vehicle turned off, and ring.