In addition to maybe being a pollutant in itself, I think that zinc additive destroys catalytic converters somehow ..... and then in turn I guess the pollution stuff steps up if the converter is dead. A number of specialty oils have the zinc additive still, high performance hot rodders with older engines buy it from shops but it's pretty pricey compared to the regular off-the-shelf stuff. And usually purchased by the quart or litre, not in 5-gallon pails like a lot of the guys here like to do. And I think the additive itself is still available by itself, simply add it to modern oils. Once again I would guess that it's pricey.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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