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Missfuelling

Misfuelling & Wrong-fuel

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So you have put the wrong fuel in your car, what now?

You’re not alone, it’s estimated that at least 150,000 drivers put the wrong fuel in their car each year – one every three and a half minutes!

BMS misfuel service:

We at BMS specialise in fuel retrieving and have a very rapid response to call outs. We use specialist tooling to drain contaminated fuel, add the appropriate fuel and ensure your vehicle is back on the road as soon as possible.

We hold the appropriate waste carriers licence and ensure all contaminated fuel is collected by a waste management company.

Misfuelling -Useful information:

If you’ve put the wrong fuel in your car, don’t turn on the ignition or start the engine as this will circulate the contaminated fuel and increase the risk of damage.

Potential damage

Diesel fuel pumps operate on very fine tolerances and are lubricated by the diesel fuel itself.

Petrol in diesel acts as a solvent – it reduces lubrication and can cause damage to the pump through metal to metal contact.

Some fuel system seals can be affected by the compounds in petrol too.

The further the contaminated petrol goes in the system the more expensive the repair – it can be cheaper in more extreme cases to fit a new engine.

Many systems use a low-pressure electric pump in the tank or sender unit and this begins to work as soon as the ignition is switched on, circulating the contaminated fuel through the pump and rail – so it’s important not to turn the ignition on.

Petrol in Diesel

Do not turn on the ignition or start the car

Generally a small amount of incorrect fuel should not damage the engine as long as you have not started the car and top up fully with diesel fuel.

Diesel in Petrol

Do not turn on the ignition or start the car

This is much less common because the standard diesel nozzle at fuel stations is larger than the fuel filler neck on modern petrol cars – you have to be pretty determined and patient to misfuel with diesel as a result.

If the car’s still under warranty you should check with the franchised dealer regarding their advice and correct remedial action.

Generally a small amount of incorrect fuel should not damage the engine as long as you have not started the car top up fully with petrol.

If you’ve added more than 10% (5 litres in a 50 litre tank) diesel – the car shouldn’t be run and the tank should be drained
If you’ve added less than 10% (5 litres in a 50 litre tank) diesel – the tank can be topped up with petrol and the car run normally unless the manufacturer has advised otherwise

Customer Reviews

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    Jools | 2014-02-25
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    Lucy | 2013-03-19
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