questions on coolient

[whit]

Changing thermostat, it currently has that orange decron fluid in it.going to drain. The whole system. Which is better green coolient or the yellow. Trying to get rid of gunk in the radiator and a lil preventative maintenance. Just wanna now if one is better than the other

[gtpeddie]

coolant* and that gunk could be from mixing dex-cool (orange) and green antifreeze

[matt5112]

http://www.grandprixforums.net/cooli...ion-67584.html

[PioneerGTP]

http://www.grandprixforums.net/cooli...ion-67584.html

hahahaha

[whit]

No, its never had green in it!! I have all service records on it. It is just that ****ty dex cool that gm puts in it.. that's why that plastic plenum on the series 2's had to be replaced or if u had an intake leak, that motor wanas done for. And has anybody used ofthose stant thermostats? Never heard of them