Incorrect fuel in a BMW 725tds? Petrol in a Diesel BMW?

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BMW Fuel Drain


Filling up with Petrol in a Diesel BMW is a regularly occurring mistake to make. And its solution depends upon a few factors. In the event that you want to find out what you ought to do about this then read on.
Let us discuss the main variables to to consider whenever choosing whether or not to get your car drained:

  1. How much Petrol did you put into the BMW, taking into consideration that the fuel tank capacity of the BMW 725tds is usually roughly 85 litres?
    1. Hardly any Petrol, as little as 4.25 litres of Petrol in a Diesel 725tds will most of the time not necessarily be a big problem. Experience has demonstrated to us that an amount under 4.25 litres (approximately 5% of the overall fuel tank capacity) is sometimes capable of being sufficiently diluted simply by totally topping up the tank with Diesel.
      It's very uncommon to encounter a car experiencing issues because of lower than 5% wrong fuel contamination. Please remember it's uncommon - definitely not impossible to find. You will discover certain motor vehicles that won't endure any amount of fuel contamination whatsoever.
    2. Anywhere between 4.25 and 8.5 litres of Petrol in the BMW (from 5 to 10%) is a 50/50 situation. Our practical experience has demonstrated that as many drivers get away with this as those who don't. Whenever you are deciding upon whether to chance it and just fill it up remember that it is just like wagering it all on black - you have got a 50/50 chance of it working.
    3. Anything over 8.5 litres of Petrol in a Diesel 725tds must straightaway be drained out because your probability of succeeding with that amount of contamination is very likely less than one in 50 - extremely long odds.
  2. Put Petrol in a Diesel BMW and drove it: Have you seen any kind of performance troubles ever since putting the wrong fuel in the 725tds? If you have, have it removed irrespective of the volume of Petrol or even the contamination percentage. Proceeding to run running a vehicle that is now starting to suffer the consequences of wrong fuel contamination will definitely cause even more damage affecting the fuel system components.
  3. Do you want assurance?
    In that case get it drained. No matter the contamination ratio, there is always some amount of risk linked with operating a Diesel engine on Diesel contaminated with the wrong fuel. Likely consequences of driving on the incorrect fuel normally include the engine refusing to start, running lumpy, loss in power, degradation of the high-pressure pump, worn or clogged injectors, and so forth. These are a few of the most typical Petrol in Diesel symptoms, and in the event that you observe any of them then stop and have it drained asap.

Stay away from having any jack-of-all-trades to try to fix your automobile. We are BMW experts and possess the qualifications and knowledge necessary to make sure that you are back on the road with minimum hassle or worry.

Put Petrol in a Diesel BMW

By mistake put Petrol in a Diesel BMW? Or possibly even put contaminated fuel in your BMW 725tds?

Call us for Assistance & Guidance

Contact us and receive genuine advice and practical assistance for your specific circumstance

We show up and do the fuel drain

We are able to come to you to carry out the complete fuel retrieval & clean right there on scene

All done & You Get Moving Once again

Once we have completed you are able to get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain specialists in the UK, offering nationwide cover, for BMW motorists in particular. We mostly attend:

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

We are BMW specialists and have successfully drained thousands of Diesel BMW vehicles. Whether it is at the roadside, on a station forecourt, or even at home, we can get you going again.

The Procedure

The technique of removing Petrol from a Diesel vehicle is in essence identical for the majority of motor vehicles. As you can imagine it can differ to some extent as every brand has their unique different fuel system. However it still basically adheres to the following 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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Petrol in Diesel Questions

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

I put Petrol in a Diesel 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 Diesel car on Petrol 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 Petrol can I get away with in a Diesel 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 Diesel 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 require help please Contact Us!
We can get you on the road 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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