Bad fuel in a Bentley Continental Flying Spur? Diesel in a Petrol Bentley?

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Bentley Fuel Drain


Filling up with Diesel in a Petrol Bentley is a usual mistake to make. And its solution depends on various factors. In the event that you want to know what it is advisable to do about it then continue reading.
Listed here are the key variables to take into consideration whenever deciding whether or not to have it drained:

  1. What level of Diesel have you put into the Bentley, keeping in mind that the fuel capacity of your Bentley Continental Flying Spur is in most cases approximately 90 litres?
    1. A small quantity of Diesel, less than 4.5 litres of Diesel in a Petrol Continental Flying Spur will quite often not be a significant problem. Experience has demonstrated to us that quantities less than 4.5 litres (which is 5% of the total fuel tank capacity) is in many instances capable of being sufficiently diluted by completely topping up the rest of the tank with Petrol.
      It's very rare to find a car or truck suffering from issues due to below 5% incorrect fuel contamination. Do not forget that it is infrequent - in no way impossible to find. You will discover certain vehicles that won't endure any level of contamination in the slightest.
    2. Between 4.5 and 9 litres of Diesel in the Bentley (from 5 to 10%) is more of a 50/50 situation. Our experience has confirmed that as many people get away with it as those who don't. Any time you are figuring out whether or not to risk it and just top it up remember that it is much like betting everything on black - you've got a 50/50 chance of it working out.
    3. Anything over 9 litres of Diesel in a Petrol Continental Flying Spur should really as soon as possible be drained out as your likelihood of driving with that quantity of contamination is undoubtedly lower than one in fifty - seriously big odds.
  2. Put some Diesel in a Petrol Bentley and drove it: Have you noticed any performance difficulties ever since putting the bad fuel in the Continental Flying Spur? If so, have it drained no matter the quantity of Diesel or even the contamination ratio. Continuing to drive driving an automobile that is beginning to suffer from the consequences of wrong fuel contamination can just end up in increasing amounts of harm affecting the fuel system components.
  3. Do you need security?
    You should get it removed. Regardless of contamination percentage, there is invariably a certain level of risk affiliated with running a Petrol motor on Petrol contaminated with Diesel. Probable consequences of driving on the incorrect fuel can include the engine not starting, running unevenly, loss in power, degradation of the high-pressure pump, damaged or clogged injectors, etc. These are some of the most common Diesel in Petrol signs and symptoms, and should you detect any of them then stop and get it drained asap.

Don't just get any unqualified so-and-so to attend your vehicle. We are Bentley experts and hold the skills and experience required to make sure that you get back on the road with minimum hassle or trouble.

Put Diesel in a Petrol Bentley

Inadvertently put Diesel in a Petrol Bentley? Or possibly even put contaminated fuel in your Bentley Continental Flying Spur?

Give us a call for Help & Recommendations

Contact us and get honest recommendations and practical help for your particular circumstances

We come out and drain it

We can reach you to do the complete fuel retrieval & flush there on scene

All done & You Get Going Once again

As soon as 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 authorities in the UK, offering national cover, for Bentley motorists especially. We typically attend:

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

We are Bentley specialists and have successfully drained hundreds of Petrol Bentley vehicles. Whether it's at the roadside, on a station forecourt, or even at your home, we are able to get you going again.

The Process

The procedure of getting rid of Diesel from a Petrol vehicle is essentially similar for the majority of vehicle makes. Naturally it can differ slightly as each make has their particular fuel system. However it still essentially follows the following points:

Petrol in Diesel Bentley

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Bentley

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Bentley

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.

Contact Us

In the event that you have any enquiries or need some assistance please Contact Us!
We can get you moving again.

24 hour Bentley 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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