Quote:
Originally Posted by Ecky
I risk playing the devil's advocate here because I'm a huge fan of keeping classic cars on the road, despite their higher pollution - I honestly don't care if it's a tiny minority of cars - but the standards for a '66 are probably very low, considering it wasn't until the mid 70's that catalytic converters became (almost) necessary to pass emissions.
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The problem with some older cars is that they can't stand to a leaner burn without the risk of melting their pistons due to the absence of oil spraying nozzles, having to rely on a richer air/fuel ratio for cooling. But anyway, an eventual retrofit into an old iron to improve its emissions and fuel-efficiency is still most likely to be less energy-intensive than building a newer econobox which would be supposed to take its entire expected life cycle to overcome this initial disadvantage.