Incorrect fuel in your Mercedes GLK 350? Diesel in your Petrol Mercedes?

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Mercedes Fuel Drain


Putting Diesel in a Petrol Mercedes is a usual mistake to make. And exactly what you want to do about it will depend on several different factors. If perhaps you want to know what you ought to do about this then stay with me.
These are the main variables to take into account whenever figuring out whether or not to get a fuel drain:

  1. How much Diesel did you put in to the Mercedes, taking into account that the fuel capacity of your Mercedes GLK 350 is in most cases about 66 litres?
    1. Hardly any Diesel, less than 3.3 litres of Diesel in a Petrol GLK 350 will in most situations not be a massive problem. Experience has proven to us that anything under 3.3 litres (about 5% of the overall fuel tank capacity) is in many instances able to be adequately diluted simply by wholly topping the remainder of the tank with Petrol.
      It's highly uncommon to come across a vehicle suffering from problems due to lower than 5% wrong fuel contamination. Keep in mind that it is very infrequent - definitely not impossible to encounter. There are actually certain vehicles that won't endure any quantity of contamination whatsoever.
    2. Between 3.3 and 6.6 litres of Diesel in the Mercedes (5 to 10%) is a 50/50 condition. Our experience has confirmed that as many motorists get away with it as all those who don't. When you are trying to decide whether or not to chance it and just top it up bear in mind that it is the same as betting everything on black - you will have a 50/50 chance of it being ok.
    3. Anything more than 6.6 litres of Diesel in a Petrol GLK 350 ought to right away be drained out as your probability of driving with this amount of contamination is certainly below one in fifty - definitely long odds.
  2. Put some Diesel in a Petrol Mercedes and drove it: Have you spotted any kind of performance difficulties ever since putting the wrong fuel in your GLK 350? If you have, get it drained regardless of the quantity of Diesel or even the contamination ratio. Continually running a car that is beginning to suffer from the effects of wrong fuel contamination can definitely be responsible for progressively more harm being done to the fuel system.
  3. Are you interested in peace of mind?
    In that case get it emptied. Regardless of contamination percentage, there is invariably some extent of threat linked with driving a Petrol motor on Petrol contaminated with the wrong fuel. Likely results of driving a vehicle on the incorrect fuel include things like the motor refusing to start, running lumpy, reduced power, degradation of the high-pressure pump, damaged or clogged injectors, etc. These are several of the commonest Diesel in Petrol signs and symptoms, and in the event that you notice any of them then stop and have it removed asap.

Don't simply have any jack-of-all-trades to try to repair your car. We are Mercedes specialists and hold the certification and experience necessary to make certain you get back on the road with no hassle or worry.

Put Diesel in a Petrol Mercedes

Accidentally put Diesel in a Petrol Mercedes? Or even put contaminated fuel in your Mercedes GLK 350?

Give us a call for Help & Guidance

Call us and receive reliable guidance and sensible assistance for your particular circumstance

We come out and do a fuel drain

We would go to you to undertake the full contaminated fuel drain & purge there on scene

Once done You Get Going Once again

When we have completed you are able to get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, boasting national cover, for Mercedes motorists especially. We mostly fix:

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

We are Mercedes specialists and have successfully drained hundreds of Petrol Mercedes vehicles. Whether or not it's at the roadside, on a station forecourt, or even at your house, we can get you going again.

The Procedure

The procedure of draining Diesel from a Petrol vehicle is generally exactly the same for the vast majority of motor vehicles. Of course it may vary somewhat as each brand has their particular distinct fuel system. However it still fundamentally follows the following principles:

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 case you have any concerns or need our help please Contact Us!
We can get you on the road again.

24 hour Mercedes Helpline

0333 366 0103

Our Business Office

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

Weekdays: 9am to 5pm

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