[C320-list] What antifreeze/coolant?

[swampcreek42]

Ok, I've read myself into a stupor. This is good followed by NO! NOT THAT! This shouldn't be an odessy! IT'S ENGINE COOLANT!Anyway I have a 3GM30F a 1999 engine in a 2000 boat (boat built in November 1999). It now has the green stuff, I was happy with it but read it might be a good idea to go to the extended life coolant  (ELC). Since I'm changing out the engine hoses and the thermostat which I believe to be original now 15 years old I think I'll flush the heck out of the engine and change to the red or orange stuff BUT all the information I'm seeing is at least 5 years old and is very contradictory. The local shop states DEX COOL but I've read there were problems and lawsuits over that stuff. Then Havoline ELC is recomend but I also read they make DEX COOL! This is nuts! I'm almost resolved to staying with the green stuff, but read with the green stuff you might need to add supplimental coolant additives which Yanmar doesn't recomend. I do see that Yanmar makes Yanmar Ultra Life YG30 but can't seem to see it advertised locally. Sooooo, what are you all runnimg?
Bruce Hunter Nauti Time #719 Pasadena MD 

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-------- Original message --------
From: Scott Thompson <surprise at thompson87.com> 
Date: 07/18/2015  12:45 PM  (GMT-05:00) 
To: C320-List at Catalina320.com 
Subject: Re: [C320-list] Wing vs Fin