Plain Spot: Put Petrol in a Diesel Car?
If you have not fired up the engine as yet, do not. A drain and nothing more is nearly always what a car requires while the petrol is still sitting in your tank and the engine has not yet run, which is why it's the coming few minutes that matter, not how much got in. Petrol in Diesel goes to your car wherever it has come to rest in Plain Spot or the rest of Nottinghamshire, on the forecourt, at the roadside or on a driveway, and drains and flushes it there. Contact us before everything else starts, so you'll hear what comes next.
Your first five steps: petrol in a diesel
- Whenever you drive, your pump and the injectors suffer. This is why you don't start the vehicle, and why you do not trust it once it has started. The thing about petrol in a diesel in particular — the part people get wrong — is that it drives away fine for the first mile or two. Diesel in a petrol motor generally won't run at all, which stops the person and stops the damage with them. This one lets you keep going.
- Leave your ignition be too. Diesel has two tasks: it combusts, and before it burns it greases that high-pressure fuel pump and the injectors. Petrol does the first and not the second. Switching the ignition on is often sufficient to prime your system, which draws the petrol out of your tank and into exactly those components.
- Never thin it. Diesel poured on top gets rid of nothing, so all you have is more of what was already there, because percentage isn't how a diesel fuel system tolerates petrol. Super unleaded? Still petrol. The type makes no difference.
- We would sooner get to an awkward spot than have it started — so if you sensibly can, stay put. Nothing is simpler to sort out than a vehicle that has not moved. On the verge on Plainspot Road, that means hazards on and leave the car.
- Keep your whereabouts ready before you call. A postcode beginning NG16 5 and whatever is next to you with a label on it is the difference between our van turning up and the van circling.
- Phone 0333 366 0103. Expect three questions — what went in, roughly how many litres, plus if the engine has been started. The responses determine everything that happens next.
How many miles you went is what our engineers query, not how long the motor has been standing — and this is why. Diesel performs two jobs on its way through a motor: it ignites, and before burning it greases that injection pump and its injectors. Petrol does the first only. So a rushed fill-up on the way in, the penny dropping around eleven, and a diesel Volkswagen Golf standing at Langley Mill since quarter past eight tells us those few miles were done with the pump running on a fluid robbed of most of its protection. Phone then leave the vehicle precisely where it stands.
The enquiry we want goes like this: diesel Renault Megane, a few litres of unleaded, done a couple of miles, now turned off outside The Co-operative Food. What we are actually asking is how much fuel the pump has drawn — not how long ago it was.
What we will want to know is whether that drive there was brief and cold, since that's where petrol is least likely to burn fully — and whatever doesn't burn can work past the rings and into the oil. Right up to the moment someone drives it home, a diesel Nissan Qashqai sitting in the parking area at Durham Ox with a tank of petrol in it is a straightforward job. Nothing deteriorates as it sits, so park the car there overnight then ring us in the morning.
Here's the full mechanism. Diesel needs enough body to seal the fine gaps it goes through, and petrol takes that away. That's it. Which accounts for the normal Brinsley Recreation Ground call — a diesel Peugeot 3008, out there without fuss and back down on power, uneven at idle, possibly a bit of smoke. Injection systems work hydraulically as well as chemically, and so your fuel has to hold pressure and not just burn; weakened, it escapes past those clearances rather than building, and delivery comes weaker, later, less even than the motor was designed around. Not a failing engine, though. Fuel that has stopped behaving like diesel. Put that right and it stops.
Why so blunt about leaving your keys alone? Since your pump is before your injectors, and a wearing one sends whatever it gives off on with the fuel. Ring us. Leave the Mercedes E-Class by Brinsley Village Sign.
Forecourt draining for petrol in a diesel
Pumps are where this job usually kicks off, and where a large chunk of that closes. The drain usually happens on the spot. Still on the forecourt at the nearest petrol station? Given the station's agreement, that is a place we work, and routinely.
Nowhere except the forecourt can it be caught with your engine still cold. Fuel drawn out of that tank and through the fuel filter, all the way to the high-pressure fuel pump, is what happens when your engine is switched on and your car is driven to where it is now: the car park, the driveway or the lay-by, everywhere other than the forecourt. So the flush covers the fuel filter and the fuel lines as well as your tank. That's still not a catastrophe, and our engineers sort it out where your car stands. What decides it is whether the ignition was turned in the seconds after the till receipt was checked.
Move the vehicle out of the way if the attendants suggest it, and they usually will. The next customer gets through the pump, and that's worth doing. Four vehicle lengths is not worth a start.
Will our technicians reach your corner of Plain Spot?
As a residential suburb, Plain Spot has a routine visit, while the places close by come with it on the same round: Brinsley and New Brinsley, Underwood and New Westwood, Westwood.
If yours is not on this list that does not mean we never come — there are pages for most towns around Nottinghamshire, and the ones listed above are just the immediate neighbours. Near a border, or anywhere your satnav misreads? Ring us to enquire rather than guessing.
That map is the area the page includes. The lot is territory our engineers work: a kerbside, a forecourt, a private drive, a car park. You don't bring your vehicle anywhere.
Plain Spot: broken down wherever you parked
Not everybody has a suitable spot to pull over. A normal call for us and not an odd one: noticed after setting off, finished up by the verge on Main Road or at a lay-by with the hazard lights flashing.
Whether you stay with the vehicle or stand away from it rests on if staying in it looks safe. Do not start up the engine to limp it somewhere safer — a diesel running on petrol will frequently oblige, and every mile it obliges for is drawing that mix further into the system. Carrying on causes the car far more harm than our van heading out to a difficult place, and that is no trouble for us.
So you've run it? Petrol in a diesel after a couple of miles
Here is where the local M1 comes into it — under 3 miles from Plain Spot. Lost power, a lumpy idle, some smoke: those are the symptoms when they arrive, rather than a neat stop — and a misfuelled diesel will frequently get you onto it and some distance along before anything seems wrong at all.
The next safe junction is the one to take. Switch off there, then leave the restarting alone. It changes what we bring, so mention it when you phone: on a longer trip — anything approaching the under 10 miles to the closest city — assume the contamination has been through the fuel filter, the pump and your injectors.
Plain Spot itself
Plain Spot is a suburban area in Nottinghamshire, situated approximately 9.4 miles from Nottingham and 117.9 miles from London. Plain Spot sits at an elevation of 119 metres, surrounded by other nearby places such as Brinsley, New Brinsley, and Underwood. Plain Spot is characterised by its predominantly detached housing stock, reflecting the area's residential nature.
The job in Plain Spot, step by step
- Our technicians establish what went in, how much, and whether the motor has run. The responses change the work, which is why our engineers ask before pricing.
- Away flows the polluted fuel.
- Lines rinsed, filter cleaned. Whatever remains later isn't the thing that caused the trouble.
- Bleeding the system follows, once fresh diesel is in.
- The motor is started and checked to make sure it runs properly on new diesel.
After that it is ready to set off. There is no need to go to a garage at any point, as the work is all done where the car is, and when it is caught early, permanent damage is very unusual.
AdBlue in a diesel tank in Plain Spot is a separate problem
AdBlue instead of petrol? Then the opening instruction is unchanged — your engine stays off — while this issue underneath it is a distinct one altogether. Petrol thins your diesel and removes the protection your fuel system depends on. AdBlue is urea in water, and in a diesel tank it causes rust and build-up instead.
Both are ours. There's a separate Plain Spot page for AdBlue removal, with the details on it — including the reasons it usually turns out to be the worse of the two.
Paying for a petrol-in-diesel drain in Plain Spot
Truthfully, no single price fits on a page like this. The job differs. Here's what moves it:
- Whether the engine has been started or driven. This is the main one.
- Wrong fuel in, against what that tank holds — that proportion.
- Whether it was unleaded or AdBlue.
- Where your car is, and if a van can safely get to and work on it.
A firm answer instead of a range is what you get for telling us three things: your vehicle, the amount, and if it has run. Vehicle at home, going nowhere, nothing time-critical about it — is ideal for that.
Plain Spot motorists ask us these about petrol in diesel
Fuel drains on a Plain Spot petrol station forecourt
Plenty of what our technicians do gets done nowhere else. So yes. Consent from the site is the condition. Given that, a forecourt like Gulf is somewhere we are regularly, along with the rest of them locally — so name yours on the call and you will hear if working there is possible.
A few litres of petrol in a diesel — too much?
It depends on the ratio rather than the litres, and much more on whether your motor has run. A nearly empty tank with five litres in it, against a full one with the same five: different scenarios, definitely. Either way, the work required comes down to one thing, which is if the system has had that blend sucked through it.
Petrol in my diesel, and I have driven the vehicle
Pull in somewhere safe, turn off, then keep it off. Not restarting it is the single most valuable thing available to you now. Driving does shift the problem out of that tank and into your pump and injectors, yes, and it remains salvageable a lot more often than drivers expect.
Fuel drains and manufacturer warranties
A drain and flush carried out correctly isn't an alteration and does not invalidate a manufacturer's warranty. What's likelier to start a disagreement is a diesel that has been run on petrol. One more good reason for the engine to stay off.
Two-stroke oil in that tank, and then home?
No. It belongs to a separate issue from a different era, and petrol has thinned something no oil of that kind replaces. Later? Still petrol in the tank, and a pump that has to cope with the stuff.
Does petrol in a diesel have to go to a main dealer?
Wherever your car is, we drain and flush it there, so a trip to the main dealer does not come into it.
Still with the vehicle?
Leave the engine shut off.
Turn it off somewhere sensible then keep it off, if you have already driven it. Cold, stationary, going nowhere: that's the best place to be in. People fear this a lot more than they need to.
Emptying wrongly fuelled motors, Plain Spot and the rest of Nottinghamshire, wherever they are. Kerbside. Forecourt. Home.