Incorrect fuel in a BMW 750Li? Diesel in your Petrol BMW?

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BMW Fuel Drain


Putting Diesel in a Petrol BMW is a well-known error. And exactly what you need to do about it is based on an assortment of things. In the event that you would like to find out what you need to do about this then continue reading.
Here are the most crucial variables to keep in mind when determining whether or not to have a fuel drain:

  1. What level of Diesel did you put into the BMW, taking into account that the fuel tank capacity of the BMW 750Li is normally roughly 88 litres?
    1. A small amount of Diesel, something like 4.4 litres of Diesel in a Petrol 750Li will normally not be a big problem. Experience has taught us that quantities less than 4.4 litres (about 5% of the whole fuel tank capacity) is very often able to be completely diluted simply by entirely topping the tank with the correct fuel.
      It is very uncommon to encounter a car or truck having issues because of lower than 5% incorrect fuel contamination. Please remember it is uncommon - certainly not impossible to find. You can get some automobiles that will not stand any amount of contamination at all.
    2. In between 4.4 and 8.8 litres of Diesel in the BMW (5 to 10%) is more of a 50/50 condition. Our working experience has revealed that as many people get away with this as those who break down. Whenever you are deciding on whether or not to risk it and basically top it up bear in mind that it is the same as betting your car on black - you've got a 50/50 chance of it being ok.
    3. Anything in excess of 8.8 litres of Diesel in your Petrol 750Li really should straightaway be drained as your probability of getting away with that quantity of contamination is very likely below one in fifty - really long odds.
  2. Put some Diesel in a Petrol BMW and drove it: Have you spotted any performance problems as a result of putting the wrong fuel in the 750Li? If you have, get it removed regardless of the quantity of Diesel or even the contamination percentage. Continually driving a car that is already beginning to suffer from the consequences of fuel contamination will typically cause more harm being done to the fuel system parts.
  3. Do you want peace of mind?
    Then get it emptied. Regardless of contamination percentage, there is always some extent of risk affiliated with driving a Petrol engine on Petrol contaminated with Diesel. Possible outcomes of driving on the wrong fuel include the motor refusing to start, running unevenly, decrease in power, wearing of the high-pressure pump, worn out or clogged injectors, and so forth. These are some of the most common Diesel in Petrol symptoms, and if you recognise any of them cease driving and have it drained right away.

Avoid getting any jack-of-all-trades to attend your vehicle. We are BMW specialists and have the certification and knowledge necessary to ensure that you are back on the road with little hassle or worry.

Put Diesel in a Petrol BMW

By mistake put Diesel in a Petrol BMW? Or possibly even put contaminated fuel in your BMW 750Li?

Contact us for Assistance & Recommendations

Call us and receive reliable guidance and practical help for your particular circumstance

We come out and do a fuel drain

We are able to go to you to perform the complete contaminated fuel drain & flush there on scene

Once carried out You Get Moving Once again

As soon as we are done you should be able to get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, having countrywide cover, for BMW motorists particularly. We typically fix:

  • Unleaded petrol in a Diesel Auto
  • Diesel in Unleaded Petrol Vehicle
  • AdBlue contamination
  • Water contamination

We are BMW specialists and have successfully drained thousands of Petrol BMW vehicles. No matter if it's at the roadside, on a station forecourt, or even at your home, we can get you going again.

The Procedure

The system of getting rid of Diesel from a Petrol car is in essence the same for the vast majority of vehicle makes. Obviously it may vary to some extent as each brand has their own distinct fuel system. However it still essentially adheres to the below points:

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 FAQs

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.

Call us

In case you have any questions or require our help please Contact Us!
We can get you on the road 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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