Petrol in a Diesel Car in Bedlington: How Worried Should You Be?
Probably less than you already are — as long as no one has started the vehicle. Until your ignition primes your pump, your starter turns, or your vehicle is driven, petrol in a diesel tank just sits there and does no harm. Which means the honest reply to that first Bedlington query — "have I wrecked it?" — normally no. Keep it that way: leave the engine off and ring Petrol in Diesel. Below, you will find what petrol actually does inside a diesel, how far it may have gone, and how to stop it happening to you a second time.
Inside your engine: what petrol in a diesel really does
Passing through a motor, diesel does two things at the same time. It protects first, and only then does it burn. Designed to extremely fine clearances, the fuel injectors and your pump depend on the diesel moving through them to stop their surfaces wearing against one another.
Petrol handles the first job poorly and the second not at all. Being less viscous than diesel, petrol strips out the lubrication a fuel system needs, so a pump on the blend wearing itself. It's also made to resist igniting under compression — the reverse of what a diesel needs — which is where you get the clattering.
Together, those leave the shape of the trouble clear. It is movement that causes the damage, not contact. Petrol in a tank is a fuel fault. Once the pump has been running on that petrol, a mechanical fault has started: anything shed by a pump that is grinding is carried onward to the injectors with the fuel.
Bedlington, petrol in a diesel: four situations, from mild to significant
Fuelled up, never started. The best case there is. That petrol is inside your tank and only that tank, and the job is a drain and a flush where the vehicle sits. This is the one scenario that can only truly happen at a forecourt, as anywhere else the vehicle has been driven to get there.
A brief spell of running, or merely your ignition on. Petrol has left your tank and got to your filter and the lines, because the fuel system has been bled. That's normally still a simple job — a drain, a flush, and the fuel filter seen to.
A few miles driven, and the pump has spent every one of them running on thinned fuel. The work is that tank, the fuel lines, your filter and clean fuel through the entire circuit, and how hard the car was driven counts as much as how far. Driving the kids to Bedlington West End Primary School is one sort of trip. Very different once more: a run to Newcastle upon Tyne, under 15 miles away, or some miles on the A167(M), under 15 miles from Bedlington, where the engine kept running hard.
Driven until it complained. Rattling, a ragged idle, smoke, a throttle that has gone soft. That's your motor telling you its fuel no longer is acting like diesel. Stop wherever you are — the verge on Clovelly Gardens, a lay-by, a side street — then leave the vehicle there. A car pulled over quickly very seldom has lasting damage, since the drain and the flush, which still go first, deal with it.
Myths Bedlington drivers hear about petrol in a diesel
False: topping up to full with diesel makes it fine. It doesn't. Topping up takes out nothing; it gives you a bigger tank of the same mix. A diesel fuel system does not accept petrol by percentage in the way that advice presumes.
Myth: a modern diesel copes with a bit of petrol. If anything, the reverse. More precise components and higher pressure are how a current diesel runs its fuel, and that makes the lubrication matter more, not less.
"It starts, it drives, so no harm done" — the myth that catches most motorists than any other. Diesel in a petrol motor usually means a motor that won't run: the driver stops, and so does the harm. Whilst the pump grinds, a diesel fed petrol usually starts, ticks over and drives away as if nothing has happened. Fine and running aren't the same thing.
Myth: a two-stroke additive lets you to drive home. It was an old fix, meant for another fault. That petrol is still inside that tank afterwards, and what it has weakened isn't put back.
The next start draws petrol back round the pump out of your lines and the filter, where some of it ends up once the engine has been run. That is why a DIY tank drain does not leave you sorted — a myth. Besides, petrol emptied into a can by the road is genuinely risky.
How does petrol in a diesel happen?
It is seldom carelessness, and no one does it on purpose. The forecourt makes it simple: the petrol nozzle is the slimmer of the two, and it slips into a diesel filler with almost no resistance, while a diesel nozzle generally won't go into a petrol motor at all. So the error runs one way.
It happens when habit and the car stop matching. Hire cars, courtesy cars, and vehicles that are new to you. Households running one of each, petrol and diesel. A familiar forecourt with the pumps in a different order. A train to catch, and a hurried fill en route to the nearest station. The first fill-up in a diesel Renault Megane 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 the hand does what it has always done.
Next time you fill up around Bedlington: avoiding petrol in a diesel
- Check the pump, not the colour. In the UK unleaded handles are generally green and diesel black, yet not on each forecourt. The label is what counts.
- The first fill in a new car is the time to check the filler flap — inside it, or on the cap, many vehicles state which fuel they take.
- Good intentions count for less than a sticker or a fob in a bright colour on the diesel's key when a home has one of each. So mark it.
- Say it before you lift it. On the first fill in a new or hired car, say "diesel" aloud before you take the nozzle off the pump. It seems daft and it works.
- Whilst you're thinking about something else, this is an easy mistake to make — so put your phone away.
- Some diesels come with a filler designed to reject 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 reading the pump.
- Less petrol makes a weaker mix, so stop as soon as you notice — though remembering that the next stage is unchanged. It is still not to start the car.
Petrol already in a diesel in Bedlington? Begin here
In that case, there's only a short order of things. Leave it unstarted, with your ignition off as well. Ask the staff to help you roll it clear of the pump if you are still on the forecourt, whether that's BP or anywhere else. Call 0333 366 0103 next, with three answers — the fuel, the approximate quantity, and whether it has run.
Say so if it was AdBlue instead of petrol: it is a separate fault, with its own page for Bedlington, because AdBlue brings corrosion and deposits rather than lost lubrication.
Why one petrol in a diesel task in Bedlington costs more than another
Four different tasks lie behind the four situations above — which is why there is no fair single quote. Which of them you're in is mostly what moves your cost. Two things come after that: the petrol that was put in as a share of what that tank takes, then the place your car is in and whether a technician can reach it safely.
Before any quote, not after, come three questions: your fuel that went in, the amount, and whether it has run. That is why. A range turns into a straight figure once those replies are in.
About Bedlington itself
Bedlington is a town in south-east Northumberland, situated approximately 10 miles north of Newcastle upon Tyne. Bedlington sits inland, with an elevation of around 61 metres, and is characterised by its semi-detached housing stock. Bedlington is part of a wider urban area that includes nearby places such as Bedlington Station, Nedderton, and Choppington. Bedlington has a population of around 11,371 people, making it a significant settlement in the region.
Bedlington and Northumberland: where our fuel drain cover runs
Petrol in diesel calls around Bedlington — part of the NE postcode area — go to teams that likewise cover the locations about it, Bedlington Station, Nedderton and Choppington 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.
In Bedlington and still at the petrol pump?
Then you're in the best position there is. Call, and keep it switched off.