Put Petrol in a Diesel Car in Bridge of Weir? Don't Start It
Petrol in Diesel drains and flushes wrongly fuelled vehicles where they sit, on the forecourt, at the roadside or on a drive, across Bridge of Weir and the remainder of Renfrewshire. The first thing to do is not to fire up your engine. When the motor has not been started and the petrol is still in the tank, a drain is nearly always all it needs, and the coming few minutes decide that, not how much went in. Ring us before everything else starts, and you will know what happens from there.
Your next five minutes: petrol in a diesel
- While you drive, the pump and the injectors wear down. That's why you don't crank it, and why you never believe it once it has started. The trick about petrol in a diesel especially — the part motorists get wrong — is that it drives away normally for the first mile or two. Diesel in a petrol engine generally won't run at all, which stops the driver and stops the damage with them. This one lets you keep going.
- Leave your ignition alone as well. Diesel performs two tasks: it ignites, and before it burns it protects that injection pump and its injectors. Petrol manages the first and not the second. Turning the ignition on is frequently enough to prime the system, which draws the petrol out of the tank and into just those components.
- That guidance presumes a diesel fuel system copes with petrol by percentage. It doesn't. Tip diesel on top and nothing at all is removed; what you get is a fuller tank of the same blend. And no, the grade makes no difference — super unleaded is still petrol.
- Stay where you are if you safely can. A vehicle that hasn't shifted is the quickest one to deal with, and our team would much rather travel to an odd place than have it started. If you're pulled up on the verge on Church Manse Lane, turn those hazards on then leave it there.
- Keep your whereabouts prepared before you dial. A postcode beginning PA11 3 and whatever is next to you with a label on it is the difference between a van arriving and the van circling.
- Three facts determine your whole visit: the liquid you put in, the rough amount of it, and if anything has been going since. The line is 0333 366 0103.
Nothing about the time since has lost you anything. Fuel sitting in a tank is dormant, and so a diesel Renault Clio left outside Milliken Park this morning is no worse at five than it was at nine — what pulled weakened diesel through your pump was the run in. Call us before you go to collect it.
Diesel Volkswagen Tiguan. A few litres of unleaded. Driven a couple of miles. Shut off now, outside Co-op Food. That is the call we want, because the point underneath it's about volume through the pump instead of hours on the clock.
This is what a job in the car park by Gryffe Inn usually looks like. Our technicians reach the car, ask what got in, roughly how much, and whether the motor has run since — those three answers settle much of the work. Then the tainted mixture comes out of your tank, the lines get cleaned, and the fuel filter comes off where your Dacia Duster has a serviceable one. New diesel goes in and your system is primed. Then we start it, confirm it runs correctly, and you set off.
Pull over somewhere sensible, switch off and phone us. Happy on the way out to Houston Road Park (Bridge of Weir), sluggish on the way back? Then look at the tank. Petrol thins diesel; weaker fuel slips past the close-fitting components that build injection pressure; and the farther your diesel Mercedes E-Class went, the less of that pressure it held.
Three things help when you call from near Freeland Church: which side the filler is on, whether a technician can pull up alongside without blocking the road, and if your engine has run since you filled up. On-street is the commonest location our technicians work, so the place itself is seldom the trouble — we'd much rather deal with a cramped parking bay than with a motor that has been driven to somewhere more handy. We'll drain the Audi A3, change the filter where there's a serviceable one, flush the fuel lines and put fresh fuel through the whole circuit, since by this point the worst of that is sitting in the fuel lines instead of in the tank.
Draining petrol from the diesel at the forecourt
A good chunk of the work is finished at the pump, since that's where it usually kicks off. The drain typically happens there and then. Still on the forecourt at Morrisons? Given the station's consent, that is somewhere our technicians work, and regularly.
No place other than a forecourt can it be spotted with the engine still unrun. Fuel sucked out of the tank and through the filter, all the way to the high-pressure fuel pump, is what happens when the motor is started and the vehicle is driven to where it is now: the car park, the drive or the lay-by, everywhere other than the forecourt. So the flush includes the filter and your lines along with that tank. That is still not a disaster, and our technicians put it right where the vehicle is. What settles it is whether the key was turned in the seconds after the till receipt was checked.
The attendants will usually happily push it out from the pump so the next driver can get through. That's worth doing. Starting it just to shift four vehicle lengths is not.
Areas we serve near Bridge of Weir
Bridge of Weir is a village, so our team get out to the town and to the areas around it on the usual rounds: Ranfurly, Clevans, Crosslee, Houston and Kilbarchan.
There are pages for most locations in Renfrewshire, and the ones mentioned above are simply the immediate neighbours — so yours being missing from that list tells you nothing about whether we come. Near the boundary, or anywhere the satnav gets wrong? Phone to check rather than presuming.
The area this page covers is on this map. Roadside, forecourt, private drive, car park: all of that is ground we cover, and none of it needs your vehicle to come to us.
Roadside call-outs in Bridge of Weir
Not everybody finds a safe place to stop. If you realised after setting off and landed along the verge of Mill Brae, or in a lay-by somewhere with your hazards flashing, that is a normal call for us instead of an odd one.
Out of the vehicle when it isn't wise to wait in it, by it if it is. Every mile a diesel obliges you for on petrol draws the mixture further into the fuel system — and oblige it frequently will, which is why the engine does not get restarted to limp somewhere better. Driving on causes your car far more harm than a technician driving out to an inconvenient place, and that is no problem for us.
A couple of miles on petrol in a diesel: what next?
This is where the M8 comes into it — under 5 miles from Bridge of Weir. Some distance along, and onto it in the first place: a misfilled diesel will frequently manage both before anything seems wrong. What you get then is rarely a clean stop. Power ebbs away, the idle gets uneven, and there may be smoke.
Pull off at the first sensible exit, turn off, and do not restart it to move it. On a longer run — anything close to the under 15 miles to the nearest city — take it the mixture has been through your filter, your pump and the fuel injectors, and mention it when you phone. It affects what we bring.
Bridge of Weir itself
Bridge of Weir is a village situated on the banks of the River Gryffe in Renfrewshire, with a mix of flat housing and other residential properties. Bridge of Weir lies approximately 13 miles west of Glasgow and is close to nearby places such as Ranfurly and Crosslee. Bridge of Weir has a population of around 2009 people and is located at an elevation of 50 metres above sea level. Bridge of Weir is also relatively distant from London, being around 351 miles away.
The visit around Bridge of Weir, step by step
- Our technicians ask first, price after. What went in? How much? Has the motor run? Those responses shape what the work really is.
- That tank is emptied of everything.
- Our engineers clean the fuel lines and clear the filter, so what is left in the system isn't what started the issue.
- Your system gets bled, on new diesel.
- The engine is turned on and checked to make sure it runs correctly on new diesel.
From that point, you are ready to drive away. There is no need to go to a garage at any stage, as the work is all done where your car is, and when it is caught quickly, long-term damage is very rare.
Bridge of Weir AdBlue removal is a different problem
If what was put in was AdBlue instead of petrol, the opening step is unchanged — don't start the vehicle — yet the issue isn't. Diluted diesel, and no protection left for the fuel system that relies on it. That is petrol. AdBlue? Urea dissolved in water. Tip that in with the diesel and you get rust instead, plus deposits.
Both are ours. There is a separate Bridge of Weir page for AdBlue removal, with the detail on it — including the reasons it usually turns out to be the worse of the two.
Bridge of Weir prices for a petrol-in-diesel drain
What moves the figure is listed below, since the job isn't one job and our technicians can't frankly put a single price on this page.
- Has it been run or driven? Nothing else counts for as much.
- Wrong fuel in, against what the tank holds — that ratio.
- AdBlue or unleaded, whichever went in.
- Where your vehicle is, and whether a van can safely get to and work on it.
Tell us your vehicle, the quantity and if it has run, and you'll get a straight answer instead of a range. Not pressing, with the car at home and going nowhere? Then works.
Bridge of Weir motorists ask us these about petrol in diesel
I am on a forecourt around Bridge of Weir. Can you drain it on the spot?
Much of what our technicians do takes place nowhere else. So yes. Tell us which one you're at when you phone and we'll tell you if our engineers can work there. With the station's consent our technicians visit Tesco and the other forecourts locally all the time.
Is there a sensible quantity of petrol in a diesel?
Whether the engine has run matters far more, though the proportion counts too, rather than the litres. What settles how much work is needed is whether that blend has been drawn through the fuel system — because even though five litres in an almost empty tank is a distinct matter from five in a full one, either way that's the question.
Petrol in my diesel, and I have driven it
Stop sensibly. Off. Nothing after that. It's recoverable a lot more often than drivers fear, even though driving is what takes the trouble from your tank into your pump and injectors — and the single most useful thing you can do now isn't restart it.
My warranty — does a fuel drain void it?
A drain and flush carried out correctly is not a modification and does not void a manufacturer's warranty. An argument over a warranty is likelier to come from running a diesel on petrol — so leave it turned off.
Two-stroke oil in that tank, and then home?
No. Two-stroke oil is an old remedy for a different fault and it doesn't put back what petrol has weakened. Later? Still petrol in that tank, and a pump that has to live with the stuff.
Does petrol in a diesel have to go to a main dealer?
Wherever your car is, we drain and clean it there, so a visit to the main dealer does not come into it.
Standing next to it?
Do not switch it on again.
Turn it off somewhere sensible then leave it off, if you have already driven it. A still, cold vehicle is the best position to be in, and this is recoverable from much more often than people fear.
Throughout Renfrewshire and in Bridge of Weir: on-site fuel draining, at home or on the forecourt or at the roadside.