Quote:
Originally Posted by Pierre Louis
...So no, it appears people are being "exhaust racists" when they condemn "black exhaust" diesel and don't even pay attention to "invisible exhaust" gasoline engine pollution, which we all know has more CO, CO2, HC, and small particulates when compared to normally tuned diesel.
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"Racism" analogies aside, are you asserting that black diesel exhaust is ok? Or that black diesel exhaust contains fewer fine particulates by volume than modern diesel and/or gas engines? I'm not sure how soot would biodegrade; are there studies? Do you support installing old diesel engines in new glider chassis by the thousands for decades to come and have them exempt from modern enviro/efficiency standards, to compete with/displace new trucks?