A kind of addendum to Mark's earleir post about LPG. Mark wasn't sure when I asked him whether LPG was a better deal for the climate in the usage rather than just in terms of using our fossil heritage more efficiently. Well this appears to be the answer. "LPG is also a cleaner fuel than petrol, and dramatically cleaner than diesel. Compared with petrol, LPG vehicles emit about 20% less CO2. While LPG emits similar levels of CO2 to diesel, one diesel car is equivalent to 20 LPG cars with regard to nitrogen oxides (NOx), and 120 LPG vehicles in terms of particulates, both of which are major causes of ground-level air pollution. One important environmental caveat with LPG is that it actually uses up to 20% more fuel by volume than petrol. It is simply a cleaner way of burning a fossil fuel, not a way of reducing the need to drill for oil."
Guardian Unlimited | Special reports | A clean set of wheels:
2 comments:
I ought to point out again that, by using LPG you are reducing the demand for oil drilling and CO2 pollution. This is because (1) the LPG is a byproduct of petrol production and would have been burnt off and wasted if you didn't use it and (2) you are not using petrol which would have added to demand for oil drilling.
Fair comment: in fact that's pretty much what I was driving at [!], but apologies that hasty writing left it a bit unclear what I was saying and attributing to you.
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