Honestly, I seriously doubt that putting ethanol in gasoline makes any measurable difference in air quality. Today's engines are so much cleaner than older engines even as recently as the 1990s that their emissions are too minute to even measure with ordinary testing equipment. Oxidation and reduction catalysts have taken care of the little that is left after leaving the combustion chamber.
I sure do remember when changing spark plugs was a twice a year deal. I also remember carburetors and points. Keep in mind that back in the 1960s, most spark plugs were copper non resistor plugs. Today's plugs are platinum or iridium and are fired with 80,000 volt ignition systems. Points are gone along with distributors and carburetors.
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Today's Featured Article - Tractor Operator Safety - Loader & Backhoe Operation - by Staff. Loader Operation Do not transport anyone in the loader bucket. Always carry the loader bucket low for maximum stability and visibility, whether the bucket is loaded or empty. Always use the recommended amount of counterweihting to ensure good stability. Be careful when handling large objects such as round bales, logs,
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