Contaminated fuel in your Mercedes B170? Diesel in a Petrol Mercedes?

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Mercedes Fuel Drain


Filling Diesel in a Petrol Mercedes is a regularly occurring problem. And its solution depends upon a variety of factors. Assuming you want to find out what to do about this then keep on reading.
Listed here the key variables to think about when deciding whether to have a fuel drain:

  1. Exactly how much Diesel did you put in to the Mercedes, taking into account that the fuel capacity of the Mercedes B170 is most likely around 54 litres?
    1. A modest amount of Diesel, less than 2.7 litres of Diesel in a Petrol B170 will normally not really be a massive problem. Experience has demonstrated to us that quantities less than 2.7 litres (close to 5% of the overall fuel tank volume) is frequently able to be sufficiently diluted by completely filling up the rest of the tank with the correct fuel.
      It is very rare to come across an automobile suffering from problems because of under 5% incorrect fuel contamination. Be aware that it is infrequent - certainly not impossible to encounter. There are certain cars that won't endure any quantity of fuel contamination in the slightest.
    2. Between 2.7 and 5.4 litres of Diesel in the Mercedes (5 to 10%) is more of a 50/50 condition. Our working experience has revealed that as many motorists get away with this as all those who don't. When deciding on whether to risk it and just simply fill it up recognise that it is the same as gambling all of it on black - you will have a 50/50 possibility of it working out.
    3. Anything above 5.4 litres of Diesel in a Petrol B170 should promptly be removed seeing that your likelihood of succeeding with this level of contamination is certainly lower than one in 50 - genuinely long odds.
  2. Put some Diesel in a Petrol Mercedes and drove it: Have you detected any kind of performance issues ever since putting the bad fuel in the B170? In that case, have it removed irrespective of the volume of Diesel or the contamination ratio. Continuing to run running a car that is currently beginning to suffer from the consequences of fuel contamination will probably only be responsible for even more damage affecting the fuel system components.
  3. Do you need peace of mind?
    Then simply just get it removed. Whatever the contamination ratio, there is inevitably some amount of threat resulting from running a Petrol vehicle on Petrol contaminated with the incorrect fuel. Likely results of driving on the wrong fuel normally include the motor refusing to start, running lumpy, lack of power, degradation of the high-pressure pump, worn or clogged injectors, etc. These are several of the most common Diesel in Petrol signs or symptoms, and should you observe any of them then stop and have it drained right now.

Steer clear of having any jack-of-all-trades to try to fix your vehicle. We are Mercedes specialists and possess the accreditation and expertise required to ensure you are back on the road with little hassle or trouble.

Put Diesel in a Petrol Mercedes

Mistakenly put Diesel in a Petrol Mercedes? Or even put contaminated fuel in your Mercedes B170?

Call us for Assistance & Recommendations

Contact us and obtain honest recommendations and practical help for your precise circumstances

We come out and drain it

We can come to you to undertake the full contaminated fuel removal & flush there on scene

Once carried out You Get Going Again

Once 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 authorities in the UK, having national cover, for Mercedes motorists especially. We principally deal with:

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

We are Mercedes specialists and have successfully drained thousands of Petrol Mercedes vehicles. Whether or not it is roadside, on a filling station forecourt, or even at your house, we are able to get you moving once again.

The Process

The process of getting rid of Diesel from a Petrol vehicle is in essence the same for virtually all vehicles. As you can imagine it may vary to some extent as every brand has their particular distinct fuel system. Having said that it still follows the below points:

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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Diesel in Petrol Questions

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.

Contact Us

In the event that you have any concerns or want help please Call us!
We are able to get you on the road again.

24 hour Mercedes Helpline

0333 366 0103

Our Corporate Office

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

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