Not time to worry
Flarepilot
[QUOTE]lose engine...worry for 12 hours get close to home./QUOTE]
Time to worry is when your down to 2 engines and could have landed an hour ago. In all seriousness if you are established enroute and need to do a precautionary shutdown, of course you consider your options. The obvious being the destination and enroute weather. Next I would consider my options for landing short if need be, again check the weather. And if I were flying in South America I would check the MEA's over the Andes and ask for a reroute or if need be or land short of the destination. I really don't understand all the excitement about flying with an engine out.
Regards