The motorcraft GOLD is good good stuff.. I HIGHLY recommend it.

I like the prestone stuff too... I suspect it's close to the same thing as the motorcraft gold, but can't verify this. Also I like the gold color... if you don't get all the green stuff out, it turns green.. likewise with the orange dexcool, this way you avoid a brown, muddy color.

Just don't be surprised if it makes your coolant look weak.. it's just because of the color.

Good luck