One thing that's got me wondering again .....commercial LPG gas bottles by law have to be chucked out after a 10year period. Whilst I 99% doubt this exact thing applies to the LPG tank in your car ... could there be a similar law whereby you have to get your LPG tank re-serviced after a certain period?

Hi guys: Natural gas contains rougly methane:ethane ropane=12:2:1 depend where is produce, the ratio may diff a bit,and due to the purification process, may change the make up ratio. LPG or petrol (alkaneC5-C10,& cycloalkanes)'s volatility has nothing to do with law of gravity!!!! It is due to its weak bonding betweet moleculs(van der waals force) and once you get down to molecules or electrons the sort of thing, Newton law can not apply, need quntum mechanic!!!!! Well I can go on&on, there is no point to learning this sort of crap!!!! been there, done that. not advise anyone to do science, they are ****. I would rather to learn how to take care of my car. So please , dont put up some f*** scietific law to anyone. thanks guys MD Some original photos have not been recovered yet.