Re: You are killing me, Mother E.
I agree. It cannot be a big surprise to anyone that traditional carburated outboards produce a fair bit of unburned fuel and oil into the exhaust, which goes directly into the waterway.<br />The effects of this can only be negative. How negative is open to question, and certainly need to be studied, but common sense tells us that less emissions, either thru DFI technology or 4 stroke or whatever, can only help.<br />To pretend it has no effect, or that some other factor is as bad or worse, like freighters pumping holds or bilges or whatever, misses the point.<br /><br />As regarding pollutants such as petro-chemicals and the like, less is always better in our waterways.<br /><br />Just my $.02 worth.<br /><br />John