Wrong fuel in a Mazda Rx-8? Diesel in your Petrol Mazda?

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Mazda Fuel Drain


Filling Diesel in a Petrol Mazda is a well-known error. And exactly what you have to do about it is determined by several factors. If perhaps you want to find out what it is best to do to sort it out then stay with me.
These are the most important factors to to consider when making a decision whether or not to have it drained:

  1. How much Diesel have you put in to the Mazda, taking into consideration that the fuel tank capacity of your Mazda Rx-8 is usually about 61 litres?
    1. Hardly any Diesel, as little as 3.05 litres of Diesel in a Petrol Rx-8 will normally not be a big problem. Experience has demonstrated to us that an amount less than 3.05 litres (which is approximately 5% of the fuel tank capacity) is very often able to be adequately diluted by means of completely topping the tank with Petrol.
      It is very rare to encounter a car or truck suffering from problems with below 5% incorrect fuel contamination. Keep in mind that it is uncommon - in no way impossible to encounter. There are actually some cars that will not endure any quantity of contamination whatsoever.
    2. Between 3.05 and 6.1 litres of Diesel in the Mazda (5 to 10%) is more of a 50/50 scenario. Our working experience has proven that as many drivers get away with it as those people who break down. When deciding on whether to chance it and simply top it up consider that it is just like betting it all on black - you have got a 50/50 chance of it working.
    3. Anything in excess of 6.1 litres of Diesel in your Petrol Rx-8 ought to right away be removed seeing that your likelihood of getting away with that level of contamination is almost certainly lower than one in 50 - genuinely huge odds.
  2. Put some Diesel in a Petrol Mazda and drove it: Have you noted any kind of performance issues as a result of putting the bad fuel in your Rx-8? If you have, get it emptied regardless of the amount of Diesel or the contamination percentage. Proceeding to run driving a motor vehicle that is beginning to suffer the effects of fuel contamination can definitely cause progressively more damage being caused to the fuel system components.
  3. Do you need peace of mind?
    Then simply just get it emptied. Regardless of the contamination percentage, there is invariably a certain level of threat caused by driving a Petrol motor on fuel contaminated with the wrong fuel. Possible results of driving on the incorrect fuel can include the engine refusing to start, running unevenly, loss in power, wearing of the high-pressure pump, damaged or clogged injectors, and the like. These are several of the commonest Diesel in Petrol signs and symptoms, and if you observe any of them then stop and get it removed immediately.

Do not just have any unqualified mechanic to attend your automobile. We are Mazda experts and possess the qualifications and practical experience needed to ensure you get back on the road with minimum hassle or trouble.

Put Diesel in a Petrol Mazda

By mistake put Diesel in a Petrol Mazda? Or perhaps even put contaminated fuel in your Mazda Rx-8?

Give us a call for Help & Advice

Call us and obtain genuine recommendations and practical assistance for your specific situation

We arrive and drain it

We are able to go to you to perform the contaminated fuel drain & purge right there on scene

All done & You Get Moving Again

As soon as we have completed you should be able to get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain experts in the UK, having countrywide service, for Mazda motorists in particular. We primarily fix:

  • Unleaded petrol in a Diesel Auto
  • Diesel in an Unleaded Petrol Car
  • AdBlue contamination
  • Water fuel contamination

We are Mazda specialists and have successfully drained hundreds of Petrol Mazda vehicles. No matter if it is roadside, on a station forecourt, or even at your home, we can get you moving once again.

The Procedure

The process of getting rid of Diesel from a Petrol car is essentially similar for a large number of cars. As you can imagine it may differ a little as each brand has their particular different fuel system. Nevertheless it still generally adheres to the below principles:

Petrol in Diesel Mazda

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Mazda

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Mazda

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.

Call us

Should you have any enquiries or need some assistance please Call us!
We are able to get you going once again.

24/7 Mazda Helpline

0333 366 0103

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


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