Contaminated fuel in a BMW 318is? Diesel in a Petrol BMW?

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BMW Fuel Drain


Filling Diesel in a Petrol BMW is a very common mistake to make. And its solution varies according to a few factors. If you would like to find out what to do to sort it out then keep on reading.
Here are the main factors to to consider when deciding on whether or not to get the car drained:

  1. Exactly how much Diesel did you put in the BMW, bearing in mind that the fuel capacity of your BMW 318is is most likely around 65 litres?
    1. A tiny quantity of Diesel, something like 3.25 litres of Diesel in a Petrol 318is will in most cases not necessarily be a big problem. Experience has demonstrated to us that an amount under 3.25 litres (which is close to 5% of the entire fuel tank capacity) is oftentimes able to be adequately diluted by means of totally filling up the remainder of the tank with Petrol.
      It is rather uncommon to come across an automobile having difficulties due to less than 5% wrong fuel contamination. Bear in mind that it is very rare - definitely not impossible to encounter. There are a few automobiles that don't stand any level of fuel contamination at all.
    2. Somewhere between 3.25 and 6.5 litres of Diesel in the BMW (5 to 10%) is really a 50/50 scenario. Our expertise has shown that as many people get away with this as all those who break down. Whenever you are deciding whether to chance it and simply fill it up recognise that it is exactly like wagering all of it on black - you have a 50/50 possibility of it being ok.
    3. Anything above 6.5 litres of Diesel in your Petrol 318is must straightaway be removed since your probability of succeeding with this amount of contamination is certainly below one in fifty - really long odds.
  2. Put some Diesel in a Petrol BMW and drove it: Have you noted any kind of performance troubles ever since putting the incorrect fuel in the 318is? If you have, have it drained irrespective of the amount of Diesel or the contamination ratio. Continually running a motor vehicle that is now beginning to suffer from the effects of fuel contamination will typically be responsible for even more harm being done to the fuel system.
  3. Do you want peace of mind?
    In that case get it removed. Regardless of contamination percentage, there is invariably some degree of danger connected to operating a Petrol engine on fuel contaminated with Diesel. Possible implications of driving on the wrong fuel include things like the motor not starting, running unevenly, lack of power, degradation of the high-pressure pump, damaged or bunged injectors, and the like. These are several of the most common Diesel in Petrol symptoms, and in the event that you notice any of them then stop and have it removed asap.

Stay away from getting any unqualified so-and-so to try to drain your car. We are BMW experts and possess the credentials and knowledge required to make certain that you get back on the road with a minimum of hassle or trouble.

Put Diesel in a Petrol BMW

Inadvertently put Diesel in a Petrol BMW? Or perhaps even put contaminated fuel in your BMW 318is?

Give us a call for Help & Recommendations

Contact us and receive honest guidance and sensible assistance for your specific circumstance

We show up and drain it

We can go to you to do the fuel retrieval & purge there on scene

Once carried out You Get Going Once again

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

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain experts in the UK, offering countrywide coverage, for BMW motorists particularly. We predominantly attend:

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

We are BMW specialists and have successfully drained thousands of Petrol BMW vehicles. Regardless of whether it's roadside, on a filling station forecourt, or even at your home, we can get you on the road once again.

The Procedure

The system of getting rid of Diesel from a Petrol car is fundamentally identical for a large number of vehicles. Obviously it can vary somewhat as each brand has their unique fuel system. Having said that it still essentially observes 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.

Get in Touch

In the event that you have any queries or want some assistance please Call us!
We can get you moving 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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