The Stock coolant that comes in these cars are just fine to use, You do not need any addatives no matter how hard you drive it. The only people that know these cars better than us are those that build it and design it. If it called for a better coolant they would have put it in there. All in all the Dexacool they put in these cars is just fine. If you follow your recomended service you shouldnt have anything to worry about. I do mine once a year.
Mod's So Far: AEM CAI, C.A. Header, 2.50 Magnaflow Catback Exhaust , ZZP Catless Downpipe, DC Carbon Strut Bar, Dropped on Progress Springs. Tinted, Fully Debadged, Custom front SS bumper,2 Audiobahn 10" w/JL amp, Lower Billett Grille, Sengen 18 x 8 rims wrapped in Capitol Sport UHP 225/40/18.