Wrong fuel in a Jaguar S-Type? Diesel in your Petrol Jaguar?

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Jaguar Fuel Drain


Filling Diesel in a Petrol Jaguar is a very common problem. And its solution hinges on several different factors. If perhaps you would like to find out what you ought to do about it then stay with me.
Let us discuss the key variables to consider whenever deciding whether or not to get your car drained:

  1. What amount of Diesel did you put in to the Jaguar, bearing in mind that the fuel capacity of your Jaguar S-Type is probably around 70 litres?
    1. A tiny quantity of Diesel, something like 3.5 litres of Diesel in a Petrol S-Type will more often than not not really be a big problem. Experience has taught us that anything less than 3.5 litres (approximately 5% of the total fuel tank) is often able to be adequately diluted through completely filling the remainder of the tank with Petrol.
      It's very unusual to find a car or truck having issues with below 5% wrong fuel contamination. Keep in mind it is infrequently found - definitely not impossible to find. There are actually some cars that won't stand any amount of contamination in the slightest.
    2. Between 3.5 and 7 litres of Diesel in the Jaguar (from 5 to 10%) is a 50/50 situation. Our expertise has confirmed that as many people get away with it as those who break down. Whenever deciding upon whether or not to risk it and just fill it up recognise that it is exactly like betting everything on black - you will have a 50/50 possibility of it working.
    3. Anything more than 7 litres of Diesel in your Petrol S-Type should really immediately be drained since your likelihood of driving with this level of contamination is in all likelihood lower than one in 50 - definitely long odds.
  2. Put Diesel in a Petrol Jaguar and drove it: Have you spotted any performance difficulties after putting the bad fuel in your S-Type? If so, have it emptied no matter the quantity of Diesel or the contamination percentage. Continuing to drive running a motor vehicle that is currently starting to suffer the effect of wrong fuel contamination will probably definitely result in progressively more damage being done to the fuel system parts.
  3. Would you like security?
    Then get it emptied. Regardless of contamination ratio, there is always some degree of risk affiliated with operating a Petrol motor on fuel contaminated with the wrong fuel. Probable results of driving a vehicle on the wrong fuel include the motor not starting, running lumpy, loss in power, degradation of the high-pressure pump, worn out or bunged injectors, and so forth. These are some of the commonest Diesel in Petrol symptoms, and in the event that you detect any of them then cease driving and have it removed asap.

Avoid having any unqualified mechanic to attend your car. We are Jaguar specialists and possess the accreditation and working experience necessary to make certain that you get back on the road with a minimum of hassle or worry.

Put Diesel in a Petrol Jaguar

By mistake put Diesel in a Petrol Jaguar? Or possibly even put contaminated fuel in your Jaguar S-Type?

Give us a call for Help & Advice

Call us and obtain reliable recommendations and practical assistance for your particular circumstances

We come out and do the fuel drain

We would come to you to carry out the full fuel drain & flush right there on scene

Once done You Get Going Again

Once we have finished you are able to get back moving and get on with your trip

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain experts in the UK, having countrywide service, for Jaguar motorists particularly. We predominantly fix:

  • Unleaded petrol in a Diesel Vehicle
  • Diesel in your Unleaded Petrol Car
  • AdBlue contamination
  • Water contamination

We are Jaguar specialists and have successfully drained thousands of Petrol Jaguar vehicles. No matter if it's roadside, on a filling station forecourt, or even at your home, we are able to get you moving once again.

The Procedure

The method of getting rid of Diesel from a Petrol vehicle is fundamentally similar for virtually all vehicle makes. Naturally it may differ to some degree as every manufacturer has their particular different fuel system. Nevertheless it still basically adheres to the following principles:

Petrol in Diesel Jaguar

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Jaguar

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Jaguar

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.

Get in Touch

If you have any queries or need some assistance please Contact Us!
We are able to get you on the road again.

24/7 Jaguar Helpline

0333 366 0103

Our Corporate Office

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


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