Petrol in a Diesel Asia Rocsta: Already Driven It?
If you have travelled on petrol in a diesel Asia Rocsta, stop as soon as it is safe, switch the engine off then keep it off. It's very rare for lasting harm to follow if it is spotted soon, and it can still be sorted out where you've stopped.
When Petrol in Diesel travels out to wherever your Asia Rocsta has stopped, the petrol is cleaned from your fuel system and your fuel tank drained. When we leave, it's running on clean diesel.
Signs of petrol in a diesel Rocsta
A diesel Rocsta with petrol inside your tank often feels normal to begin with, and so the signs usually show up a couple of miles further on. These are the signs most often spotted when the fuel tank has AdBlue or petrol in it:
- the engine lacks power, particularly when you ask it to pull
- lumpy running, or an erratic idle
- smoke from the exhaust, more of it than usual
- the dashboard displays warning lights
- it stalls, then may refuse to restart
The receipt will show what went in, which means you should check it if one of these began after you fuelled up.
Wrong fuel in your Asia Rocsta: what driving on it does
Wrong fuel in your Asia Rocsta remains in the tank till the motor pulls it out, and driving is what takes it through the filter, your high-pressure pump and your injectors. As diesel flows through the injectors and your pump it protects them, but petrol thins it, which is why the Rocsta spreads the blend further into the system the further it's driven.
That is the reason to stop the moment you can and not complete the journey. A motor that's stopped early usually needs nothing more than a drain and a clean. What can cause harm is covering a long distance on contaminated fuel.
Where you've pulled up
You do not have to get the Rocsta anywhere. We come to it at the side of the road or outside your house, and so there is no reason to start the car or arrange a tow.
Somewhere safe, clear of the traffic, is the place to wait if you are beside a busy road, with your hazard lights on.
Ring 0333 366 0103 and say where you are, what Rocsta it is and about how far it has been driven. If the badge gives the version, like the Rocsta D, that is useful too.
Fuel drain on your Asia Rocsta once you've driven it
Compared with a drain at the forecourt, a fuel drain on your Asia Rocsta goes one step further after driving. Draining the tank comes first. After that we open up the fuel lines and rinse them through with your fuel filter, so there's no petrol remaining between your fuel tank and the engine. With clean diesel in and the system primed, our technicians start the motor and check it runs correctly.
AdBlue in a diesel Asia Rocsta after it has run
If you have AdBlue in a diesel Asia Rocsta and have driven on it, the signs are normally rough running, smoke and warning lamps, and the car might cut out. Because AdBlue settles to the bottom of your tank, where your fuel pump takes its fuel, it is in your fuel line fast, and it does not burn or lubricate. Its water drying lets the urea form crystals in the fuel lines and your fuel filter.
AdBlue removal from a diesel Asia Rocsta after it has run
We change the fuel filter if it needs it as part of AdBlue removal from a diesel Asia Rocsta after it has run, once your tank is emptied and the crystals are cleared from your filter and your lines.
If your Rocsta has a dedicated AdBlue tank, that's left alone. This is about liquid in the diesel tank, not removing or turning off the AdBlue system.
Asia Rocsta fuel tank capacity and engine sizes
65 litres is the size of the diesel tank on every version of the Asia Rocsta in our data.
The cost of a fuel drain on the Asia Rocsta after a drive
The cost of a fuel drain on the Asia Rocsta after it has been driven depends largely on how far it travelled and where it has stopped, and whether it was petrol or AdBlue makes a difference too. Those details are what we need when you ring, and with them we can tell you what the work will involve.
Driven with petrol in a diesel Asia Rocsta: your queries
Is my Rocsta ruined?
The likelihood of that is very small. We drain and clean the fuel system where you've pulled up, and when the car has been stopped early, permanent damage is uncommon.
Can I make the drive home first?
We'd sooner you did not. We can empty the Rocsta just where it sits, so it doesn't need shifting, and each mile driven on contaminated fuel would take it further through the fuel system.
Stalled, and it won't restart: what should I do next?
Leaving it alone is better than having another go, as every attempt draws that blend further through. We start it for you after emptying and flushing it, putting clean diesel in and priming the system.
Will my insurance cover wrong fuel in my Asia Rocsta?
We still come out whatever your policy says, and some do offer misfuelling cover, so looking at yours after the car is sorted is worth doing.