Contaminated fuel in a BMW Z4? Diesel in a Petrol BMW?

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BMW Fuel Drain


Filling up with Diesel in a Petrol BMW is a fairly typical error. And its remedy varies according to various things. In case you would like to know what you must do to sort it out then continue reading.
Here are the most important variables to to consider when figuring out whether to get the car drained:

  1. Exactly how much Diesel did you put in to the BMW, keeping in mind that the fuel capacity of the BMW Z4 is most likely about 55 litres?
    1. Hardly any Diesel, less than 2.75 litres of Diesel in a Petrol Z4 will normally not really be a big problem. Experience has taught us that anything less than 2.75 litres (about 5% of the fuel tank capacity) is very often able to be completely diluted by totally topping the tank with the right fuel.
      It's highly unusual to find a car going through problems with less than 5% incorrect fuel contamination. Keep in mind that it's unusual - in no way impossible to encounter. You will discover a number of cars that will not stand any degree of contamination whatsoever.
    2. Anywhere between 2.75 and 5.5 litres of Diesel in the BMW (from 5 to 10%) is a 50/50 scenario. Our expertise has confirmed that as many motorists get away with this as those who break down. When you are figuring out whether or not to chance it and basically top it up bear in mind that it is exactly like betting all of it on black - you will have a 50/50 possibility of it working out.
    3. Anything in excess of 5.5 litres of Diesel in your Petrol Z4 ought to immediately be drained out because your probability of getting away with this level of contamination is in all likelihood lower than one in fifty - genuinely huge odds.
  2. Put Diesel in a Petrol BMW and drove it: Have you spotted any performance concerns after putting the bad fuel in your Z4? If so, get it removed no matter the amount of Diesel or the contamination percentage. Continuing to drive driving a vehicle that is starting to suffer from the consequences of wrong fuel contamination can likely cause more and more damage being done to the fuel system parts.
  3. Do you need reassurance?
    Then simply just get it removed. Regardless of contamination ratio, there is always a certain level of threat connected to driving a Petrol motor on Petrol contaminated with the wrong fuel. Likely results of driving a vehicle on the incorrect fuel normally include the engine not starting, running unevenly, lack of power, wearing of the high-pressure pump, worn out or clogged injectors, and so on. These are several of the commonest Diesel in Petrol symptoms, and in the event that you recognise any of them stop and get it drained as soon as possible.

Avoid having any jack-of-all-trades to attend your car. We are BMW experts and hold the certification and practical experience necessary to ensure you are back on the road with no hassle or worry.

Put Diesel in a Petrol BMW

Mistakenly put Diesel in a Petrol BMW? Or perhaps even put contaminated fuel in your BMW Z4?

Call us for Help & Recommendations

Call us and obtain honest guidance and practical assistance for your precise circumstances

We show up and drain it

We can come to you to perform the fuel retrieval & flush there on scene

All done & You Get Moving Again

When we are done you should be able to get back on your way and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain authorities in the UK, boasting countrywide service, for BMW motorists especially. We principally attend:

  • Unleaded petrol in your Diesel Auto
  • Diesel in an Unleaded Petrol Vehicle
  • AdBlue fuel contamination
  • Water contamination

We are BMW specialists and have successfully drained hundreds of Petrol BMW vehicles. No matter if it is roadside, on a station forecourt, or even at home, we are able to get you going again.

The Procedure

The method of draining Diesel from a Petrol car is in essence similar for a large number of vehicle makes. Needless to say it may vary to some degree as every manufacturer has their unique fuel system. However it still basically follows the following guidelines:

Petrol in Diesel BMW

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain BMW

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain BMW

Vehicle Restart

Get the car up and running again

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Diesel in Petrol Questions

When someone has put Diesel in a Petrol car they have a few very common questions. So we have compiled a list of the most Frequently Asked Questions for you

I put Diesel in a Petrol car and drove it. What do I do?


Turn off the car as soon as possible and call us. Continuing to run a vehicle on the wrong fuel can potentially damage it. We will be able to give you advice and assistance based on your circumstances

Will driving a Petrol car on Diesel cause damage to it?


It can. However, if the problem is caught and remedied quickly the risks will be minimal. Of the 1,500 vehicles we attend every month, less than 0.5% have suffered and substantial damage requiring parts replacement.

How much Diesel can I get away with in a Petrol car?


The safe answer is none. However you might be able to get away with a very low contamination ratio. That being said, we always highly recommend draining anything over a 5% contamination ratio asap.

I know about petrol in diesel, but what about Super Unleaded?


Putting Super Unleaded, or Shell V-Power, BP Ultimate Unleaded, etc, will have the exact same effect as putting regular unleaded petrol in your diesel car and will need to be drained out and flushed.

Will getting you to do a fuel drain void my warranty?


No! The EU Block Exemption Regulations clearly state that "the work can be carried out by as long as that garage uses manufacturer approved parts and correctly follows the manufacturer's service schedule."

Can I top it up with Petrol and add some 2-stroke oil?


This might work on some vehicles in some cases, but in the majority on instances it won't and you risk damaging the Lambda sensors as well as fuel pump and injectors, just as a regular misfuel.

Contact Us

Should you have any questions or need some help please Call us!
We can get you moving once again.

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0333 366 0103

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Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET

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