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Business & Finance0 min ago
No best answer has yet been selected by Jackarius. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.The amount you are carrying (5ltrs) is not covered under ADR (this is conditions for the carriage of dangerous goods) as its below the limited quantities guide, but its not a good idea for several reasons.
a) Petrol when it gets hot, as it will in your boot in the summer, gives off fumes that cause the cans to expand and being plastic they can split, giving an obvious fire hazard.
b) Petrol if left in a can for some time goes stale and is not good for your car in this state.
c) In the event of an accident, the emergency services have an added danger to deal with, your plastic can will split a lot easier than your fuel tank in an accident.
If you must carry fuel with you, then you should carry it in a jerry can (this is a metal 5 gallon can with a special seal on it usually seen on ary landrovers) mount it to the outsde of the vehicle where it can be seen and put a highly flammible sticker on it (though not required by law) so the emergency services can see it.
Looks a bit rough on your average family saloon though.
I hope this helps.