Bad fuel in your Mazda Cx-7? Diesel in your Petrol Mazda?

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Mazda Fuel Drain


Putting Diesel in a Petrol Mazda is a well-known mistake. And its solution is based on several different factors. If perhaps you want to find out what you ought to do to fix it then stay with me.
Listed below are the most crucial factors to keep in mind whenever choosing whether or not to have your car drained:

  1. What amount of Diesel have you put into the Mazda, keeping in mind that the fuel tank capacity of your Mazda Cx-7 is in most cases approximately 69 litres?
    1. A tiny quantity of Diesel, as little as 3.45 litres of Diesel in a Petrol Cx-7 will typically not really be a big problem. Experience has proven to us that an amount under 3.45 litres (close to 5% of the whole fuel tank) is usually able to be adequately diluted simply by thoroughly topping up the tank with Petrol.
      It's quite rare to find a car or truck having problems due to lower than 5% wrong fuel contamination. Please remember it is rare - certainly not impossible to encounter. There are some cars that don't endure any level of contamination at all.
    2. Anywhere between 3.45 and 6.9 litres of Diesel in the Mazda (from 5 to 10%) is a 50/50 situation. Our expertise has proven that as many motorists get away with it as those who break down. Any time you are deciding upon whether to risk it and basically top it up remember that it is exactly like betting all of it on black - you will have a 50/50 possibility of it being ok.
    3. Anything above 6.9 litres of Diesel in your Petrol Cx-7 really should as soon as possible be drained seeing as your probability of driving with that amount 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 problems since putting the incorrect fuel in the Cx-7? If that's the case, get it drained irrespective of the volume of Diesel or the contamination percentage. Proceeding to drive driving a car that is currently starting to suffer the consequences of wrong fuel contamination can only end up in increasing amounts of harm affecting your fuel system components.
  3. Would you like assurance?
    In that case get it removed. Regardless of the contamination percentage, there is always some extent of risk linked with driving a Petrol vehicle on fuel contaminated with Diesel. Probable consequences of driving on the incorrect fuel include the motor not starting, running unevenly, reduced power, wearing of the high-pressure pump, worn or blocked injectors, and the like. These are some of the most typical Diesel in Petrol symptoms, and if you detect any of them stop and have it removed asap.

Don't just get any unqualified so-and-so to try to repair your automobile. We are Mazda specialists and have the accreditation and expertise necessary to ensure that you get back on the road with little hassle or worry.

Put Diesel in a Petrol Mazda

By mistake put Diesel in a Petrol Mazda? Or possibly even put contaminated fuel in your Mazda Cx-7?

Contact us for Assistance & Recommendations

Give us a call and receive honest guidance and practical help for your exact circumstances

We arrive and do a fuel drain

We are able to reach you to undertake the complete fuel drain & purge there on scene

All done & You Get Moving Again

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

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain authorities in the UK, offering nationwide service, for Mazda motorists particularly. We primarily attend to:

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

We are Mazda specialists and have successfully drained hundreds of Petrol Mazda vehicles. Whether it is roadside, on a filling station forecourt, or even at home, we can get you moving again.

The Process

The method of extracting Diesel from a Petrol vehicle is essentially the same for the vast majority of vehicle makes. Of course it may vary to some degree as each brand has their unique fuel system. Having said that it still basically follows the below points:

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 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.

Call us

In the event that you have any questions or require some help please Call us!
We can get you on the road 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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