Wrong fuel in a Mercedes GLK 320 CDI? Petrol in a Diesel Mercedes?

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Putting Petrol in a Diesel Mercedes is a common error. And its remedy depends on a few factors. Assuming you would like to find out what you must do about it then read on.
Listed below are the key variables to to consider whenever making a decision whether or not to get a fuel drain:

  1. What amount of Petrol did you put into the Mercedes, taking into account that the fuel tank capacity of your Mercedes GLK 320 CDI is in most cases approximately 66 litres?
    1. Hardly any Petrol, something like 3.3 litres of Petrol in a Diesel GLK 320 CDI will normally not really be a massive problem. Experience has demonstrated to us that anything under 3.3 litres (which is about 5% of the overall fuel tank volume) is quite often capable of being adequately diluted simply by totally filling up the remainder of the tank with the correct fuel.
      It's quite rare to come across a car or truck going through issues with less than 5% incorrect fuel contamination. Do not forget that it's uncommon - in no way impossible to encounter. You will discover certain vehicles that don't endure any amount of contamination whatsoever.
    2. Anywhere between 3.3 and 6.6 litres of Petrol in the Mercedes (5 to 10%) is a 50/50 situation. Our experience has proven that as many people get away with this as those who don't. When deciding whether to chance it and basically top it up recognise that it is very much like gambling it all on black - you've got a 50/50 possibility of it working out.
    3. Anything above 6.6 litres of Petrol in a Diesel GLK 320 CDI really should promptly be drained out seeing as your probability of getting away with that amount of contamination is undoubtedly below one in 50 - definitely long odds.
  2. Put Petrol in a Diesel Mercedes and drove it: Have you noted any kind of performance troubles as a result of putting the bad fuel in your GLK 320 CDI? If so, get it emptied regardless of the amount of Petrol or the contamination percentage. Still driving a vehicle that is currently starting to suffer the effects of wrong fuel contamination will typically lead to more damage affecting your fuel system components.
  3. Do you want reassurance?
    Simply get it removed. No matter the contamination percentage, there is invariably some extent of threat connected to running a Diesel engine on fuel contaminated with Petrol. Probable outcomes of driving on the wrong fuel can include the engine not starting, running lumpy, decrease in power, wearing of the high-pressure pump, worn or blocked injectors, etc. These are a few of the most typical Petrol in Diesel warning signs, and if you observe any of them then stop driving and get it drained asap.

Don't just get any unqualified mechanic to try to fix your automobile. We are Mercedes experts and possess the qualifications and knowledge necessary to make certain that you get back on the road with little hassle or worry.

Put Petrol in a Diesel Mercedes

Accidentally put Petrol in a Diesel Mercedes? Or possibly even put contaminated fuel in your Mercedes GLK 320 CDI?

Call us for Help & Guidance

Contact us and get sincere guidance and sensible help for your exact circumstance

We come out and do the fuel drain

We are able to go to you to undertake the complete fuel drain & purge there on scene

All done & You Get Going Once again

When we have finished you can get back moving and get on with your trip

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, having countrywide cover, for Mercedes motorists in particular. We primarily deal with:

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

We are Mercedes specialists and have successfully drained thousands of Diesel Mercedes vehicles. No matter if it's at the roadside, on a station forecourt, or even at your house, we are able to get you on the road once again.

The Procedure

The system of removing Petrol from a Diesel vehicle is basically identical for virtually all vehicle makes. Naturally it may vary a little as each make has their particular distinct fuel system. Nevertheless it still basically adheres to the below guidelines:

Petrol in Diesel Mercedes

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Mercedes

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Mercedes

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.

Contact Us

In the event that you have any queries or need help please Contact Us!
We are able to 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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