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Putting petrol in a car diesel tank

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rov1200 | 22:35 Sun 10th Aug 2008 | Technology
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On Dragons Den tonight they showed a device which prevented you filling up with the wrong fuel. As the nozzle on the petrol pump is smaller than the diesel filler how did this device achieve this?
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Question Author
Well they gave him �1/4 million to develop it further. He said he had the sole patent and nothing existed comparitively to fit on older cars although some new diesel cars do have something fitted
Obviously that level of investment wasn't required for this device...

http://www.think-diesel.co.uk/

This is the showcased device...

http://www.misfuellingprevention.co.uk/dragons den.asp

http://www.autoexpress.co.uk/news/autoexpressn ews/219966/kit_to_end_misfuel_misery.html

The Ford "Easy Fuel" system implements another method of measuring the diameter of the nozzle as it enters the first part of the filler tube - if the nozzle is too narrow, i.e. as used for petrol, it restricts the nozzle from entering further.
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a square peg in a round hole would have done it

nothing short on common sense i would have thought
... and is zig.zag going to finance the cost of world changeover to square nozzles for one type of fuel?
there must be a simpler solution

is everyone colour blind?

lol
A lot of the problem is those who normally drive both diesel and petrol cars and then suffer a single momentary lapse in concentration when it comes to filling the tank. It is rarer for those who exclusively drive a diesel to misfuel their vehicle.
More haste and less speed is what is required when filling up to stop you grabbing the wrong pump.
Question Author
I suppose the petrol retailers could solve many of the problems if they had separate pumps for the 2 fuels away from each other. How many times have you seen the actual fuel fillers entwined which if put into the wrong filling port would cause the problem mentioned.

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Putting petrol in a car diesel tank

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