ull get a few years out of em. maybe 50 to 80k miles. if u left the dex cool in there it seems to tear the gaskets up a little bit faster. the good ol green stuff doesnt hurt it as bad.
But then green and dex have a party.
And green by itself isn't so great when it comes to pitting of aluminum.
Use long life coolant and just replace it at proper intervals like you're supposed to.