Contaminated fuel in a BMW M135i? Diesel in a Petrol BMW?

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BMW Fuel Drain


Putting Diesel in a Petrol BMW is a fairly typical error. And its solution hinges on a number of factors. In the event that you would like to find out what you should do about it then read on.
Listed below are the key variables to think about whenever deciding on whether or not to have it drained:

  1. How much Diesel have you put in the BMW, bearing in mind that the fuel capacity of the BMW M135i is normally roughly 53 litres?
    1. A modest amount of Diesel, as little as 2.65 litres of Diesel in a Petrol M135i will normally not be a massive problem. Experience has taught us that an amount less than 2.65 litres (which is close to 5% of the overall fuel tank) is sometimes able to be completely diluted by completely filling up the rest of the tank with the right fuel.
      It is highly uncommon to encounter a vehicle experiencing problems because of below 5% wrong fuel contamination. Do not forget that it is very unusual - not impossible to encounter. There are actually some automobiles that don't endure any amount of fuel contamination at all.
    2. Anywhere between 2.65 and 5.3 litres of Diesel in the BMW (5 to 10%) is really a 50/50 scenario. Our experience has proven that as many people get away with it as those people who don't. Whenever deciding whether or not to risk it and basically fill it up consider that it is just like wagering it all on black - you will have a 50/50 possibility of it working.
    3. Anything more than 5.3 litres of Diesel in a Petrol M135i really should straight away be drained as your probability of getting away with that quantity of contamination is in all likelihood less than one in 50 - seriously big odds.
  2. Put some Diesel in a Petrol BMW and drove it: Have you noticed any kind of performance problems ever since putting the bad fuel in your M135i? If that's the case, get it removed regardless of the quantity of Diesel or even the contamination percentage. Still running a car that is beginning to suffer from the consequences of wrong fuel contamination can just end up in progressively more damage affecting the fuel system parts.
  3. Do you need security?
    Then simply just get it drained. Regardless of the contamination ratio, there is inevitably some extent of threat affiliated with running a Petrol engine on Petrol contaminated with Diesel. Possible final outcomes of driving a vehicle on the wrong fuel normally include the engine not starting, running unevenly, loss of power, degradation of the high-pressure pump, worn out or blocked injectors, and so on. These are a few of the commonest Diesel in Petrol warning signs, and should you notice any of them stop and have it drained asap.

Keep away from getting any jack-of-all-trades to attend your automobile. We are BMW experts and possess the qualifications and experience necessary to ensure that you get back on the road with minimum hassle or worry.

Put Diesel in a Petrol BMW

Accidentally put Diesel in a Petrol BMW? Or even put contaminated fuel in your BMW M135i?

Contact us for Help & Guidance

Call us and obtain straightforward recommendations and sensible help for your specific circumstances

We show up and do a fuel drain

We would go to you to do the contaminated fuel retrieval & cleanse there on scene

All done & You Get Going Again

As soon as we are done you are able to get back on your way and get on with your trip

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain professionals in the UK, offering nationwide coverage, for BMW motorists especially. We principally attend:

  • Unleaded petrol in a Diesel Car
  • Diesel in your Unleaded Petrol Auto
  • AdBlue contamination
  • Water fuel contamination

We are BMW specialists and have successfully drained thousands of Petrol BMW vehicles. Even if it is roadside, on a filling station forecourt, or even at your house, we are able to get you moving once again.

The Procedure

The procedure of removing Diesel from a Petrol vehicle is in essence similar for the vast majority of vehicles. As you can imagine it does vary a bit as every brand has their unique distinct fuel system. Nevertheless it still basically adheres to the below 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 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 the event that you have any questions or need our assistance please Contact Us!
We are able to get you on the road again.

24/7 BMW Helpline

0333 366 0103

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

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