I had my coolant flushed at Valvoline and they advised me to use the green coolant instead of the recommended extended life. They stated the extended life is corrosive for the aluminum block and the green has all the required additives and meets the specs.
I went ahead and let them do it and now I'm wondering if I made the right move?
Anybody have any factual information on this (please, not just opinions)?
Update: I did find this information that has put my mind at ease (if it is in fact correct)