Chris and Co
to put a scientific spin on the fuel itself side of things, petrol is now far worse thanks to the greenies in the first place that moaned about it.
everyone knows that lead is a heavy molecule, yes, and as such whatever was left within the exhaust gas, was slow moving by the time it exited the exhaust system, and it pretty much fell to the ground where it would biodegrade in a relatively short space of time, but the key point is that it is a heavy molecule, so the remaining lead content did not become airborne and breathed in, as the greenies suggested we were all dying in our gazillions from.
so when the greenies won an argument to remove that precious ingredient, manufacturers and customers were left with cylinder head/valve seat erosion issues, so to compensate we got Benzoine instead of lead.
hmmm, one of the most carcenogenic chemicals known to man, now leaves your average petrol engine in a decent quantity, as a lighweight, airborne, breathable substance!
so what next, well, catalytic converters, attempt to catch, and transform this substance by defragmenting the molecules, and reducing it to a harmless jumble of other stuff, but, this only partially works, with a brand new catalyst and perfect sensor parameters, and only works at all once up to a working temperature that most cars on the school run, shopping, work journey never get anywhere near, so they just carry on churning out benzoine within the exhaust gas,
and after catalysts, because of the strangling nature of the converters due to the huge stall in gas speed, the publics continued demand for equal or greater performance, has meant that engine sizes have grown and grown, but only really churn out marginally improved figures over their older models.
only to find of course that they then need yet more emission control because the problem just got worse!
diesels on the other hand, aren't perfect either, but have made very large improvements in recent years, but have managed to gain massively in performance whilst getting ever cleaner and cleaner too, but the same heavy molecule principal applies and if the car and its systems are working properly, and, the car is being driven responsibly, there should not be huge clouds of soot and dust either.
my modded 2.4 is so clean on an emission test its unbelievable, and it has little to no exhaust system, and is well mapped for performance, i'd prefer to sit behind that all day long, no questions asked.
so the next greenie that preaches to me about the next ill planned protest, can taste my irrespponsibly large oil based contsructed soled boot.
so petrol versus diesel
on this particular argument